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contents features .............................................................................................. 1 applications ......................................................................................... 1 pin assignment ................................................................................... 1 selection guide ................................................................................... 2 absolute maximum ratings ................................................................. 3 electrical characteristics ..................................................................... 3 test circuits ........................................................................................ 17 technical terms .................................................................................. 17 operation............................................................................................. 18 transient response ............................................................................ 19 standard circuit ................................................................................... 22 application circuits .............................................................................. 22 notes on design .................................................................................. 24 package power dissipation ................................................................. 25 characteristics ..................................................................................... 26 measuring circuits ............................................................................... 32 dimensions, taping ............................................................................. 33 discontinued product
rev.2.0 seiko instruments inc. 1 the s-812xxsg series is a three-terminal positive voltage regulator made using the cmos process. since the s-812xxsg series has higher precision output voltage and consumes less current than existing three-terminal voltage regulators, battery-powered portable equipment can have a higher performance and a longer service life. nn applications constant voltage power supply of battery-powered equipment, communications equipment, video equipment and others n pin assignment high-precision voltage regulator s-812xxsg series nn features low power consumption (2.5 ma max.) high accuracy of output voltage 2% : v out 32.7 v 2.4% : v out 2.6 v small input/output voltage difference (s-81250sg: 160 mv typ. i out =10 ma) low temperature coefficient of output voltage (s-81250sg: 0.625 mv/ c typ.) wide operating voltage range (s-81250sg: 16 v max.) good line regulation (s-81250sg: 40 mv typ. i out =1ma to 40 ma) to-92, sot-89-3 and sot-23-5 package nn block diagram figure 1 r l gnd v in v out 2 + - * ref. vol. 3 * parasitic diode bottom view 1 2 3 (1) to-92 1 gnd 2 v in 3 v out top view 1 2 3 1 gnd 2 v in 3 v out (2) sot-89-3 gnd v in v out nc nc top view (3) sot-23-5 figure 2 1 discontinued product
high precision voltage regulator s-812xxsg series 2 seiko instruments inc. nn selection guide table 1 output voltage to-92*1 sot-89-3*2 sot-23-5*2 1.12.4% s-81211sgy-x s-81211sgup-dqa-x s-81211sg-qa-x 1.22.4% s-81212sgy-x s-81212sgup-dqc-x 1.32.4% s-81213sgy-x s-81213sgup-dqg-x 1.42.4% s-81214sgup-dqn-x 1.52.4% s-81215sgy-x s-81215sgup-dqk-x s-81215sg-qk-x 1.62.4% s-81216sgy-x s-81216sgup-dqp-x 1.72.4% s-81217sgy-x s-81217sgup-dqq-x s-81217sg-qq-x 1.82.4% s-81218sgy-x s-81218sgup-dqr-x s-81218sg-qr-x 1.92.4% s-81219sgy-x s-81219sgup-dqt-x 22.4% s-81220sgy-x s-81220sgup-dqs-x s-81220sg-qs-x 2.12.4% s-81221sgy-x s-81221sgup-dqu-x s-81221sg-qu-x 2.22.4% s-81222sgy-x s-81222sgup-dqv-x s-81222sg-qv-x 2.32.4% s-81223sgy-x s-81223sgup-dqw-x s-81223sg-qw-x 2.42.4% s-81224sgy-x s-81224sgup-dqx-x s-81224sg-qx-x 2.52.4% s-81225sgy-x s-81225sgup-dqh-x s-81225sg-qh-x 2.62.4% s-81226sgy-x s-81226sgup-dqy-x s-81226sg-qy-x 2.72.0% s-81227sgup-dqz-x s-81227sg-qz-x 2.82.0% s-81228sgup-dq0-x s-81228sg-q0-x 2.92.0% s-81229sgup-dq2-x s-81229sg-q2-x 32.0% s-81230sgy-x s-81230sgup-dqb-x s-81230sg-qb-x 3.12.0% s-81231sg-q3-x 3.22.0% s-81232sgup-dq4-x s-81232sg-q4-x 3.32.0% s-81233sgy-x s-81233sgup-dqf-x s-81233sg-qf-x 3.42.0% s-81234sg-q6-x 3.52.0% s-81235sgy-x s-81235sgup-dqi-x s-81235sg-qi-x 3.62.0% s-81236sgup-dq7-x 3.72.0% s-81237sgy-x s-81237sgup-dqe-x s-81237sg-qe-x 3.82.0% s-81238sgup-dq8-x s-81238sg-q8-x 3.92.0% 42.0% s-81240sgy-x s-81240sgup-dqj-x s-81240sg-qj-x 4.12.0% 4.22.0% s-81242sgup-dib-x s-81242sg-ib-x 4.32.0% s-81243sgy-x s-81243sgup-dic-x 4.42.0% 4.52.0% s-81245sgy-x s-81245sgup-dq5-x s-81245sg-q5-x 4.62.0% s-81246sgy-x s-81246sgup-dqm-x s-81246sg-qm-x 4.72.0% s-81247sgup-die-x s-81247sg-ie-x 4.82.0% s-81248sg-if-x 4.92.0% 52.0% s-81250sgy-x s-81250sgup-dqd-x s-81250sg-qd-x 5.12.0% 5.22.0% s-81252sgy-x s-81252sgup-dql-x s-81252sg-ql-x 5.32.0% s-81253sgup-dij-x s-81253sg-ij-x 5.42.0% s-81254sgup-dik-x 5.52.0% s-81255sgup-dil-x 5.62.0% s-81256sgy-x s-81256sgup-dim-x * 1 in the to-92 package, ?x? differs depending upon the packaging form: b : loose t, z : tape * 2 in the sot package, ?x? differs depending upon the packaging form (in the sot-23-5 package, on-tape packed products only): s : stick t : tape (t1 and t2 are available depending upon the direction of the ic) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 3 nn absolute maximum ratings table 2 (unless otherwise specified: ta=25c) parameter symbol conditions ratings unit v out 2.6 v 12 v input voltage v in v out 32.7 v 18 output voltage v out v in +0.3 to v ss -0.3 v output current i out 100 ma to-92 400 power dissipation p d sot-89-3 500 mw sot-23-5 150 operating temperature t opr -40 to +85 c storage temperature t stg -40 to +125 c caution: keep static electricity to a minimum. nn electrical characteristics 1. s-81211sgy-x, s-81211sgup-dqa-x, s-81211sg-qa-x (1.1-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =1.5 v, i out =0.5 ma 1.073 1.100 1.127 v 1 i/o voltage difference v dif i out =0.5 ma ? 0.05 0.2 v 1 line regulation 1 dv out 1 v in =1.5 to 10 v i out =0.5 ma ? 10 50 mv 1 line regulation 2 dv out 2 v in =1.5 to 10 v i out =10 ma ? 10 77 mv 1 load regulation dv out 3 v in =1.5 v i out =10 ma to 0.5 ma ? 10 100 mv 1 current consumption i ss v in =1.5 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =1.5 v, i out = 0.5 ma ta=-40c to 85c ? 0.138 ? mv/c ? 2. s-81212sgy-x, s-81213sgup-dqc-x (1.2-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.2 v, i out =0.5 ma 1.171 1.200 1.229 v 1 i/o voltage difference v dif i out =0.5 ma ? 0.04 0.18 v 1 line regulation 1 dv out 1 v in =2.2 to 10 v i out =0.5 ma ? 10 50 mv 1 line regulation 2 dv out 2 v in =2.2 to 10 v i out =10 ma ? 10 84 mv 1 load regulation dv out 3 v in =3.2 v i out =10 ma to10 ma ? 10 100 mv 1 current consumption i ss v in =3.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =3.2 v, i out = 0.5 ma ta=-40c to 85c ? 0.150 ? mv/c ? table 3 (unless otherwise specified: ta=25 c) table 4 (unless otherwise specified: ta=25 c) discontinued product
high precision voltage regulator s-812xxsg series 4 seiko instruments inc. 3. s-81213sgy-x, s-81213sgup-dqg-x (1.3-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.3 v, i out =0.5 ma 1.268 1.300 1.332 v 1 i/o voltage difference v dif i out =0.5 ma ? 0.02 0.14 v 1 line regulation 1 dv out 1 v in =2.3 to 10 v i out =0.5 ma ? 10 50 mv 1 line regulation 2 dv out 2 v in =2.3 to 10 v i out =10 ma ? 10 91 mv 1 load regulation dv out 3 v in =3.3 v i out =10 ma to10 ma ? 10 100 mv 1 current consumption i ss v in =3.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =3.3 v, i out = 0.5 ma ta=-40c to 85c ? 0.163 ? mv/c ? 4. s-81214sgup-dqn-x (1.4-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.4 v, i out =0.5 ma 1.366 1.400 1.434 v 1 i/o voltage difference v dif i out =0.5 ma ? 0.04 0.23 v 1 line regulation 1 dv out 1 v in =2.4 to 10 v i out =0.5 ma ? 7 36 mv 1 line regulation 2 dv out 2 v in =2.4 to 10 v i out =1 ma ? 7 98 mv 1 load regulation dv out 3 v in =3.4 v i out =1 ma to10 ma ? 80 120 mv 1 current consumption i ss v in =3.4 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =3.4 v, i out = 0.5 ma ta=-40c to 85c ? 0.175 ? mv/c ? 5. s-81215sgy-x, s-81215sgup-dqk-x, s-81215sg-qk-x (1.5-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.5 v, i out =0.5 ma 1.464 1.500 1.536 v 1 i/o voltage difference v dif i out =0.5 ma ? 0.03 0.18 v 1 line regulation 1 dv out 1 v in =2.5 to 10 v i out =0.5 ma ? 7 39 mv 1 line regulation 2 dv out 2 v in =2.5 to 10 v i out =1 ma ? 7 105 mv 1 load regulation dv out 3 v in =3.5 v i out =1 ma to10 ma ? 80 120 mv 1 current consumption i ss v in =3.5 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =3.5 v, i out = 0.5 ma ta=-40c to 85c ? 0.188 ? mv/c ? table 5 (unless otherwise specified: ta=25 c) table 6 (unless otherwise specified: ta=25 c) table 7 (unless otherwise specified: ta=25 c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 5 6. s-81216sgup-dqp-x, s-81216sgy-x (1.6-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.6 v, i out =0.5 ma 1.561 1.600 1.639 v 1 i/o voltage difference v dif i out =0.5 ma ? 0.02 0.14 v 1 line regulation 1 dv out 1 v in =2.6 to 10 v i out =1 ma ? 7 41 mv 1 line regulation 2 dv out 2 v in =2.6 to 10 v i out =1 ma ? 7 112 mv 1 load regulation dv out 3 v in =3.6 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =6.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =6.3 v, i out = 10 ma ta=-40c to 85c ? 0.200 ? mv/c ? 7. s-81217sg-qq-x (1.7-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.7 v, i out =10 ma 1.659 1.700 1.741 v 1 i/o voltage difference v dif i out =10 ma ? 0.77 1.63 v 1 line regulation 1 dv out 1 v in =2.7 to 10 v i out =1 ma ? 8 43 mv 1 line regulation 2 dv out 2 v in =2.7 to 10 v i out =1 ma ? 8 119 mv 1 load regulation dv out 3 v in =3.7 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =3.7 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =3.7 v, i out = 10 ma ta=-40c to 85c ? 0.213 ? mv/c ? 8. s-81218sg-qr-x (1.8-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.8 v, i out =10 ma 1.756 1.800 1.843 v 1 i/o voltage difference v dif i out =10 ma ? 0.72 1.55 v 1 line regulation 1 dv out 1 v in =2.8 to 10 v i out =1 ma ? 8 45 mv 1 line regulation 2 dv out 2 v in =2.8 to 10 v i out =1 ma ? 8 126 mv 1 load regulation dv out 3 v in =3.8 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =3.8 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =3.8 v, i out = 10 ma ta=-40c to 85c ? 0.225 ? mv/c ? table 9 (unless otherwise specified: ta=25 c) table 10 (unless otherwise specified : ta=25c) table 8 (unless otherwise specified: ta=25 c) discontinued product
high precision voltage regulator s-812xxsg series 6 seiko instruments inc. 9. s-81219sgup-dqt-x, s-81219sgy-x (1.9-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =3.9 v, i out =10 ma 1.854 1.900 1.946 v 1 i/o voltage difference v dif i out =10 ma ? 0.67 1.47 v 1 line regulation 1 dv out 1 v in =2.9 to 10 v i out =1 ma ? 8 47 mv 1 line regulation 2 dv out 2 v in =2.9 to 10 v i out =1 ma ? 8 133 mv 1 load regulation dv out 3 v in =3.9 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =6.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =6.3 v, i out = 10 ma ta=-40c to 85c ? 0.238 ? mv/c ? 10. s-81220sgy-x, s-81220sgup-dqs-x, s-81220sg-qs-x (2.0-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.0 v, i out =10 ma 1.592 2.000 2.048 v 1 i/o voltage difference v dif i out =10 ma ? 0.63 1.39 v 1 line regulation 1 dv out 1 v in =3.0 to 10 v i out =1 ma ? 8 48 mv 1 line regulation 2 dv out 2 v in =3.0 to 10 v i out =1 ma ? 8 140 mv 1 load regulation dv out 3 v in =4.0 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.0 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =4.0 v, i out = 10 ma ta=-40c to 85c ? 0.250 ? mv/c ? 11. s-81221sgup-dqu-x (2.1-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.1 v, i out =10 ma 2.049 2.100 2.151 v 1 i/o voltage difference v dif i out =10 ma ? 0.59 1.32 v 1 line regulation 1 dv out 1 v in =3.1 to 10 v i out =1 ma ? 9 50 mv 1 line regulation 2 dv out 2 v in =3.1 to 10 v i out =1 ma ? 9 147 mv 1 load regulation dv out 3 v in =4.1 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.1 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =4.1 v, i out = 10 ma ta=-40c to 85c ? 0.263 ? mv/c ? table 12 (unless otherwise specified : ta=25c) table 13 (unless otherwise specified : ta=25c) table 11 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 7 12. s-81222sgy-x, s-81222sgup-dqv-x, s-81222sg-qv-x (2.2-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.2 v, i out =10 ma 2.147 2.200 2.253 v 1 i/o voltage difference v dif i out =10 ma ? 0.56 1.26 v 1 line regulation 1 dv out 1 v in =3.2 to 10 v i out =1 ma ? 9 52 mv 1 line regulation 2 dv out 2 v in =3.2 to 10 v i out =1 ma ? 9 154 mv 1 load regulation dv out 3 v in =4.2 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =6.3 v, i out = 10 ma ta=-40c to 85c ? 0.275 ? mv/c ? 13. s-81223sgy-x, s-81223sg-qw-x (2.3-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.3 v, i out =10 ma 2.244 2.300 2.356 v 1 i/o voltage difference v dif i out =10 ma ? 0.53 1.20 v 1 line regulation 1 dv out 1 v in =3.3 to 10 v i out =1 ma ? 9 54 mv 1 line regulation 2 dv out 2 v in =3.3 to 10 v i out =1 ma ? 9 161 mv 1 load regulation dv out 3 v in =4.3 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =4.3 v, i out = 10 ma ta=-40c to 85c ? 0.288 ? mv/c ? 14. s-81224sgy-x, s-81224sgup-dqx-x, s-81224sg-qx-x (2.4-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.4 v, i out =10 ma 2.342 2.400 2.458 v 1 i/o voltage difference v dif i out =10 ma ? 0.49 1.15 v 1 line regulation 1 dv out 1 v in =3.4 to 10 v i out =1 ma ? 10 55 mv 1 line regulation 2 dv out 2 v in =3.4 to 10 v i out =1 ma ? 10 168 mv 1 load regulation dv out 3 v in =4.4 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.4 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =4.4 v, i out = 10 ma ta=-40c to 85c ? 0.300 ? mv/c ? table 15 (unless otherwise specified : ta=25c) table 16 (unless otherwise specified : ta=25c) table 14 (unless otherwise specified : ta=25c) discontinued product
high precision voltage regulator s-812xxsg series 8 seiko instruments inc. 15. s-81225sgy-x, s-81225sgup-dqh-x, s-81225sg-qh-x (2.5-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.5 v, i out =10 ma 2.440 2.500 2.560 v 1 i/o voltage difference v dif i out =10 ma ? 0.59 1.32 v 1 line regulation 1 dv out 1 v in =3.5 to 10 v i out =1 ma ? 10 57 mv 1 line regulation 2 dv out 2 v in =3.5 to 10 v i out =1 ma ? 10 175 mv 1 load regulation dv out 3 v in =4.5 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.5 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =4.5 v, i out = 10 ma ta=-40c to 85c ? 0.313 ? mv/c ? 16. s-81226sgy-x, s-81226sgup-dqy-x, s-81226sg-qy-x (2.6-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.6 v, i out =10 ma 2.537 2.600 2.663 v 1 i/o voltage difference v dif i out =10 ma ? 0.55 1.26 v 1 line regulation 1 dv out 1 v in =3.6 to 10 v i out =1 ma ? 10 58 mv 1 line regulation 2 dv out 2 v in =3.6 to 10 v i out =1 ma ? 10 182 mv 1 load regulation dv out 3 v in =4.6 v i out =1 ma to 10 ma ? 80 120 mv 1 current consumption i ss v in =4.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 10 v ? temperature charac- teristic of dv out dvout dta v in =4.6 v, i out = 10 ma ta=-40c to 85c ? 0.325 ? mv/c ? 17. s-81227sgup-dqz-x (2.7-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.7 v, i out =10 ma 2.646 2.700 2.754 v 1 i/o voltage difference v dif i out =10 ma ? 0.52 1.20 v 1 line regulation 1 dv out 1 v in =3.7 to 16 v i out =1 ma ? 36 72 mv 1 line regulation 2 dv out 2 v in =3.7 to 16 v i out =1 ma ? 36 189 mv 1 load regulation dv out 3 v in =4.7 v i out =1 ma to 20 ma ? 80 120 mv 1 current consumption i ss v in =4.7 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =4.7 v, i out = 10 ma ta=-40c to 85c ? 0.338 ? mv/c ? table 17 (unless otherwise specified : ta=25c) table 18 (unless otherwise specified : ta=25c) table 19 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 9 18. s-81228sgup-dq0-x, s-81228sg-q0-x (2.8-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.6 v, i out =10 ma 2.744 2.800 2.856 v 1 i/o voltage difference v dif i out =10 ma ? 0.49 1.14 v 1 line regulation 1 dv out 1 v in =3.8 to 16 v i out =1 ma ? 37 111 mv 1 line regulation 2 dv out 2 v in =3.8 to 16 v i out =1 ma ? 37 196 mv 1 load regulation dv out 3 v in =4.8 v i out =1 ma to 20 ma ? 80 120 mv 1 current consumption i ss v in =4.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =4.8 v, i out = 10 ma ta=-40c to 85c ? 0.350 ? mv/c ? 19. s-81229sgup-dq2-x, s-81229sg-q2-x (2.9-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =4.9 v, i out =10 ma 2.842 2.900 2.958 v 1 i/o voltage difference v dif i out =10 ma ? 0.46 1.09 v 1 line regulation 1 dv out 1 v in =3.9 to 16 v i out =1 ma ? 38 114 mv 1 line regulation 2 dv out 2 v in =3.9 to 16 v i out =1 ma ? 38 203 mv 1 load regulation dv out 3 v in =4.9 v i out =1 ma to 20 ma ? 80 120 mv 1 current consumption i ss v in =4.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =4.9 v, i out = 10 ma ta=-40c to 85c ? 0.363 ? mv/c ? 20. s-81230sgy-x, s-81230sgup-dqb-x, s-81230sg-qb-x (3.0-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.0 v, i out =10 ma 2.940 3.000 3.060 v 1 i/o voltage difference v dif i out =10 ma ? 0.44 1.04 v 1 line regulation 1 dv out 1 v in =4.0 to 16 v i out =1 ma ? 39 78 mv 1 line regulation 2 dv out 2 v in =4.0 to 16 v i out =1 ma ? 39 210 mv 1 load regulation dv out 3 v in =5 v i out =1 ma to 20 ma ? 60 100 mv 1 current consumption i ss v in =5.0 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.0 v, i out = 10 ma ta=-40c to 85c ? 0.375 ? mv/c ? table 20 (unless otherwise specified : ta=25c) table 22 (unless otherwise specified : ta=25c) table 21 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series 10 seiko instruments inc. 21. s-81231sg-q3-x (3.1-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.1 v, i out =10 ma 3.038 3.100 3.162 v 1 i/o voltage difference v dif i out =10 ma ? 0.42 0.99 v 1 line regulation 1 dv out 1 v in =4.1 to 16 v i out =1 ma ? 40 80 mv 1 line regulation 2 dv out 2 v in =4.1 to 16 v i out =1 ma ? 40 217 mv 1 load regulation dv out 3 v in =5.1 v i out =1 ma to 20 ma ? 60 100 mv 1 current consumption i ss v in =5.1 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.1 v, i out = 10 ma ta=-40c to 85c ? 0.388 ? mv/c ? 22. s-81232sgup-dq4-x, s-81232sg-q4-x (3.2-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.2 v, i out =10 ma 3.136 3.200 3.264 v 1 i/o voltage difference v dif i out =10 ma ? 0.39 0.95 v 1 line regulation 1 dv out 1 v in =4.2 to 16 v i out =1 ma ? 41 82 mv 1 line regulation 2 dv out 2 v in =4.2 to 16 v i out =1 ma ? 41 224 mv 1 load regulation dv out 3 v in =5.2 v i out =1 ma to 20 ma ? 60 100 mv 1 current consumption i ss v in =5.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.2 v, i out = 10 ma ta=-40c to 85c ? 0.400 ? mv/c ? 23. s-81233sgy-x, s-81233sgup-dqf-x, s-81233sg-qf-x (3.3-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.3 v, i out =10 ma 3.234 3.300 3.366 v 1 i/o voltage difference v dif i out =10 ma ? 0.37 0.91 v 1 line regulation 1 dv out 1 v in =4.3 to 16 v i out =1 ma ? 42 84 mv 1 line regulation 2 dv out 2 v in =4.3 to 16 v i out =1 ma ? 42 231 mv 1 load regulation dv out 3 v in =5.3 v i out =1 ma to 20 ma ? 60 100 mv 1 current consumption i ss v in =5.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.3 v, i out = 10 ma ta=-40c to 85c ? 0.413 ? mv/c ? table 25 (unless otherwise specified : ta=25c) table 23 (unless otherwise specified : ta=25c) table 24 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 11 24. s-81234sg-q6-x (3.4-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.4 v, i out =10 ma 3.332 3.400 3.468 v 1 i/o voltage difference v dif i out =10 ma ? 0.35 0.87 v 1 line regulation 1 dv out 1 v in =4.4 to 16 v i out =1 ma ? 43 86 mv 1 line regulation 2 dv out 2 v in =4.4 to 16 v i out =1 ma ? 43 238 mv 1 load regulation dv out 3 v in =5.4 v i out =1 ma to 20 ma ? 60 100 mv 1 current consumption i ss v in =5.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.4 v, i out = 10 ma ta=-40c to 85c ? 0.425 ? mv/c ? 25. s-81235sgy-x, s-81235sgup-dqi-x, s-81235sg-qi-x (3.5-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.5 v, i out =10 ma 3.430 3.500 3.570 v 1 i/o voltage difference v dif i out =10 ma ? 0.34 0.84 v 1 line regulation 1 dv out 1 v in =4.5 to 16 v i out =1 ma ? 44 88 mv 1 line regulation 2 dv out 2 v in =4.5 to 16 v i out =1 ma ? 44 245 mv 1 load regulation dv out 3 v in =5.5 v i out =1 ma to 30 ma ? 60 100 mv 1 current consumption i ss v in =5.5 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.5 v, i out = 10 ma ta=-40c to 85c ? 0.438 ? mv/c ? 26. s-81236sgup-dq7-x (3.6-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.6 v, i out =10 ma 3.528 3.600 3.672 v 1 i/o voltage difference v dif i out =16 ma ? 0.32 0.81 v 1 line regulation 1 dv out 1 v in =4.6 to 16 v i out =1 ma ? 45 90 mv 1 line regulation 2 dv out 2 v in =4.6 to 16 v i out =1 ma ? 45 252 mv 1 load regulation dv out 3 v in =5.6 v i out =1 ma to 30 ma ? 60 100 mv 1 current consumption i ss v in =5.6 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.6 v, i out = 10 ma ta=-40c to 85c ? 0.450 ? mv/c ? table 27 (unless otherwise specified : ta=25c) table 28 (unless otherwise specified : ta=25c) table 26 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series 12 seiko instruments inc. 27. s-81237sgy-x, s-81237sgup-dqe-x, s-81237sg-qe-x (3.7-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.7 v, i out =10 ma 3.626 3.700 3.774 v 1 i/o voltage difference v dif i out =10 ma ? 0.31 0.78 v 1 line regulation 1 dv out 1 v in =4.7 to 16 v i out =1 ma ? 46 92 mv 1 line regulation 2 dv out 2 v in =4.7 to 16 v i out =1 ma ? 46 259 mv 1 load regulation dv out 3 v in =5.7 v i out =1 ma to 30 ma ? 60 100 mv 1 current consumption i ss v in =5.7 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.7 v, i out = 10 ma ta=-40c to 85c ? 0.463 ? mv/c ? 28. s-81238sgup-dq8-x, s-81238sg-q8-x (3.8-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =5.8 v, i out =10 ma 3.724 3.800 3.876 v 1 i/o voltage difference v dif i out =10 ma ? 0.29 0.75 v 1 line regulation 1 dv out 1 v in =4.8 to 16 v i out =1 ma ? 47 93 mv 1 line regulation 2 dv out 2 v in =4.8 to 16 v i out =1 ma ? 47 266 mv 1 load regulation dv out 3 v in =5.8 v i out =1 ma to 30 ma ? 60 100 mv 1 current consumption i ss v in =5.8 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =5.8 v, i out = 10 ma ta=-40c to 85c ? 0.475 ? mv/c ? 29. s-81240sgy-x, s-81240sgup-dqj-x, s-81240sg-qj-x (4.0-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.0 v, i out =10 ma 3.920 4.000 4.080 v 1 i/o voltage difference v dif i out =10 ma ? 0.27 0.70 v 1 line regulation 1 dv out 1 v in =5.0 to 16 v i out =1 ma ? 48 96 mv 1 line regulation 2 dv out 2 v in =5.0 to 16 v i out =1 ma ? 48 280 mv 1 load regulation dv out 3 v in =6.0 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.0 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.0 v, i out = 10 ma ta=-40c to 85c ? 0.500 ? mv/c ? table 29 (unless otherwise specified : ta=25c) table 31 (unless otherwise specified : ta=25c) table 30 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 13 30. s-81242sg-ib-x (4.2-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.52v, i out =10 ma 4.116 4.200 4.284 v 1 i/o voltage difference v dif i out =10 ma ? 0.24 0.65 v 1 line regulation 1 dv out 1 v in =5.2 to 16 v i out =1 ma ? 50 100 mv 1 line regulation 2 dv out 2 v in =5.2 to 16 v i out =1 ma ? 50 294 mv 1 load regulation dv out 3 v in =6.2 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.2 v, i out = 10 ma ta=-40c to 85c ? 0.525 ? mv/c ? 31. s-81243sgy-x, s-81243sgup-dic-x (4.3-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.3v, i out =10 ma 4.214 4.300 4.386 v 1 i/o voltage difference v dif i out =10 ma ? 0.23 0.63 v 1 line regulation 1 dv out 1 v in =5.3 to 16 v i out =1 ma ? 51 101 mv 1 line regulation 2 dv out 2 v in =5.3 to 16 v i out =1 ma ? 51 301 mv 1 load regulation dv out 3 v in =6.3 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.3 v, i out = 10 ma ta=-40c to 85c ? 0.538 ? mv/c ? 32. s-81245sgy-x, s-81245sgup-dq5-x, s-81245sg-q5-x (4.5-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.5 v, i out =10 ma 4.410 4.500 4.590 v 1 i/o voltage difference v dif i out =10 ma ? 0.21 0.58 v 1 line regulation 1 dv out 1 v in =5.5 to 16 v i out =1 ma ? 52 104 mv 1 line regulation 2 dv out 2 v in =5.5 to 16 v i out =1 ma ? 52 315 mv 1 load regulation dv out 3 v in =6.5 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.5 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.5 v, i out = 10 ma ta=-40c to 85c ? 0.563 ? mv/c ? table 34 (unless otherwise specified : ta=25c) table 32 (unless otherwise specified : ta=25c) table 33 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series 14 seiko instruments inc. 33. s-81246sgy-x, s-81246sgup-dqm-x, s-81246sg-qm-x (4.6-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.6 v, i out =10 ma 4.508 4.600 4.692 v 1 i/o voltage difference v dif i out =10 ma ? 0.20 0.57 v 1 line regulation 1 dv out 1 v in =5.6 to 16 v i out =1 ma ? 53 105 mv 1 line regulation 2 dv out 2 v in =5.6 to 16 v i out =1 ma ? 53 322 mv 1 load regulation dv out 3 v in =6.6 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.6 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.6 v, i out = 10 ma ta=-40c to 85c ? 0.575 ? mv/c ? 34. s-81247sg-ie-x (4.7-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.7 v, i out =10 ma 4.606 4.700 4.794 v 1 i/o voltage difference v dif i out =10 ma ? 0.19 0.55 v 1 line regulation 1 dv out 1 v in =5.7 to 16 v i out =1 ma ? 54 107 mv 1 line regulation 2 dv out 2 v in =5.7 to 16 v i out =1 ma ? 54 329 mv 1 load regulation dv out 3 v in =6.7 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.7 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.7 v, i out = 10 ma ta=-40c to 85c ? 0.588 ? mv/c ? 35. s-81248sg-if-x (4.8-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =6.3 v, i out =10 ma 4.704 4.800 4.896 v 1 i/o voltage difference v dif i out =10 ma ? 0.18 0.53 v 1 line regulation 1 dv out 1 v in =5.8 to 16 v i out =1 ma ? 54 108 mv 1 line regulation 2 dv out 2 v in =5.8 to 16 v i out =1 ma ? 54 336 mv 1 load regulation dv out 3 v in =6.8 v i out =1 ma to 30 ma ? 50 90 mv 1 current consumption i ss v in =6.8 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =6.8 v, i out = 10 ma ta=-40c to 85c ? 0.600 ? mv/c ? table 35 (unless otherwise specified : ta=25c) table 36 (unless otherwise specified : ta=25c) table 37 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 15 36. s-81250sgy-x, s-81250sgup-dqd-x, s-81250sg-qd-x (5.0-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =7.0 v, i out =10 ma 4.900 5.000 5.100 v 1 i/o voltage difference v dif i out =10 ma ? 0.16 0.50 v 1 line regulation 1 dv out 1 v in =6.0 to 16 v i out =1 ma ? 55 110 mv 1 line regulation 2 dv out 2 v in =6.0 to 16 v i out =1 ma ? 55 350 mv 1 load regulation dv out 3 v in =7.0 v i out =1 ma to 40 ma ? 40 80 mv 1 current consumption i ss v in =7.0 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =7.0 v, i out = 10 ma ta=-40c to 85c ? 0.625 ? mv/c ? 37. s-81252sgy-x, s-81252sgup-dql-x, s-81252sg-ql-x (5.2-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =7.2 v, i out =10 ma 5.096 5.200 5.304 v 1 i/o voltage difference v dif i out =10 ma ? 0.15 0.47 v 1 line regulation 1 dv out 1 v in =6.2 to 16 v i out =1 ma ? 57 113 mv 1 line regulation 2 dv out 2 v in =6.2 to 16 v i out =1 ma ? 57 364 mv 1 load regulation dv out 3 v in =7.2 v i out =1 ma to 40 ma ? 40 80 mv 1 current consumption i ss v in =7.2 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =7.2 v, i out = 10 ma ta=-40c to 85c ? 0.650 ? mv/c ? 38. s-81253sgup-dij-x (5.3-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =7.3 v, i out =10 ma 5.194 5.300 5.406 v 1 i/o voltage difference v dif i out =10 ma ? 0.14 0.45 v 1 line regulation 1 dv out 1 v in =6.3 to 16 v i out =1 ma ? 57 114 mv 1 line regulation 2 dv out 2 v in =6.3 to 16 v i out =1 ma ? 57 371 mv 1 load regulation dv out 3 v in =7.3 v i out =1 ma to 40 ma ? 40 80 mv 1 current consumption i ss v in =7.3 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =7.3 v, i out = 10 ma ta=-40c to 85c ? 0.663 ? mv/c ? table 39 (unless otherwise specified : ta=25c) table 40 (unless otherwise specified : ta=25c) table 38 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series 16 seiko instruments inc. 39 . s-81254sgup-dik-x (5.4-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =7.4 v, i out =10 ma 5.292 5.400 5.508 v 1 i/o voltage difference v dif i out =10 ma ? 0.13 0.44 v 1 line regulation 1 dv out 1 v in =6.4 to 16 v i out =1 ma ? 58 115 mv 1 line regulation 2 dv out 2 v in =6.4 to 16 v i out =1 ma ? 58 378 mv 1 load regulation dv out 3 v in =7.4 v i out =1 ma to 40 ma ? 40 80 mv 1 current consumption i ss v in =7.4 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =7.4 v, i out = 10 ma ta=-40c to 85c ? 0.675 ? mv/c ? 40. s-81255sgup-dil-x (5.5-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =7.5 v, i out =10 ma 5.390 5.500 5.610 v 1 i/o voltage difference v dif i out =10 ma ? 0.13 0.43 v 1 line regulation 1 dv out 1 v in =6.5 to 16 v i out =1 ma ? 58 116 mv 1 line regulation 2 dv out 2 v in =6.5 to 16 v i out =1 ma ? 58 385 mv 1 load regulation dv out 3 v in =7.5 v i out =1 ma to 40 ma ? 40 80 mv 1 current consumption i ss v in =7.5 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =7.5 v, i out = 10 ma ta=-40c to 85c ? 0.688 ? mv/c ? 41. s-81256sgup-dim-x (5.6-v output type) parameter symbol conditions min. typ. max. unit test cir. output voltage v out v in =7.6 v, i out =10 ma 5.488 5.600 5.712 v 1 i/o voltage difference v dif i out =10 ma ? 0.12 0.42 v 1 line regulation 1 dv out 1 v in =6.6 to 16 v i out =1 ma ? 59 117 mv 1 line regulation 2 dv out 2 v in =6.6 to 16 v i out =1 ma ? 59 392 mv 1 load regulation dv out 3 v in =7.6 v i out =1 ma to 40 ma ? 40 80 mv 1 current consumption i ss v in =7.6 v, unloaded ? 1.2 2.5 ma 2 input voltage v in ? ? 16 v ? temperature charac- teristic of dv out dvout dta v in =7.6 v, i out = 10 ma ta=-40c to 85c ? 0.7 ? mv/c ? table 41 (unless otherwise specified : ta=25c) table 42 (unless otherwise specified : ta=25c) table 43 (unless otherwise specified : ta=25c) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 17 nn test circuits nn technical terms 1 output voltage (v out ) the precision of output voltage is guaranteed at 2.0% or 2.4% under the prescribed conditions of input voltage, output voltage, and temperature, which differ with items. if these conditions are varied, output voltage value may change into beyond the scope of precision of output voltage. see electrical characteristics and characteristics data for detail. 2 line regulations 1 and 2 ( dd v out 1, dd v out 2) indicates the input voltage dependencies of output voltage. that is, the values express how the output voltage changes, when input voltage is changed under the condition that output current is fixed. 3 load regulation ( dd v out 3) indicates the output current dependencies of output voltage. that is, the values express how the output voltage changes, when output current is changed under the condition that input voltage is fixed. 4 i/o voltage defference (v dif ) 98% of v out is output when the voltage of v out +v dif is applied. when v dif is small, output keeps a constant voltage in the small side of input voltage and large output current can be obtained. note : v dif is highly dependent on i out . figure 3 gnd gnd v in v out v in v out 1. 2. s-812xxsg series v v a v a s-812xxsg series discontinued product
high-precision voltage regulator s-812xxsg series 18 seiko instruments inc. nn operation 1 basic operation figure 4 shows the block diagram of the s-812xxsg series. the error amplifier compares a reference voltage v ref with a part of the output voltage fed back by the feedback resistors r a and r b . it supplies the control transistor with the gate current, necessary to keep a stable output voltage range not influenced by input voltage or temperature fluctuation. v in error amplifier r b r a current source - + v out gnd * reference voltage circuit * parasitic diode figure 4 reference block diagram 2 internal circuit 2.1 reference voltage circuit in a voltage regulator, the reference voltage circuit plays a very important role because any change will show up directly at an output. the s-812xxsg series has 0.8 v typical stable voltage circuit as a highly stable reference voltage source. features: low power consumption good temperature characteristic 2.2 error amplifier the error amplifier consumes very low current because it is a differential amplifier in a stable current circuit. features: good matching characteristics wide operating voltage range low offset voltage 2.3 control transistor the s-812xxsg series has a pch mos transistor as a current control transistor shown in figure 6. therefore an output current i out is expressed by the following formula where is only a small difference between input and output voltages: i out =kp{2(v gs -v tp ) (v in -v out )-(v in -v out ) 2 } * kp : conductive coefficiency v tp : threshold voltage of a control transistor setting kp to the large value results in a voltage regulator with 160 mv typical i/o voltage difference. v in - v in + gnd v in v out figure 5 error amplifier bias v in v out gnd v gs v ref - + * * parasitic diode figure 6 control transistor note: a parasitic diode is generated between v in and v out . if the electric potential of v in is higher than that of v out , ic may break because of a reverse current. keep v out less than v in +0.3 v. discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 19 3 temperature characteristic of output voltage the temperature characteristic of the output voltage is expressed by the following formula in the range of -40c to 85c. * v ref is 0.7 v min., 0.8 v typ., 0.9 v max. nn transient response 1. line transient response the overshoot and undershoot are caused in the output voltage if the input voltage fluctuates while the output current is constant. figure 7 shows the output voltage fluctuation due to input voltage change between 6.0 v and 10 v in square wave. table 44 shows the parameter dependency when input voltage fluctuates. for reference, figure 8 describes the measurement circuit. table 44 parameter dependency due to input voltage fluctuation parameter method to decrease overshoot method to decrease undershoot output current i out decrease decrease load capacitance c l increase increase input voltage fluctuation dv in * decrease decrease temperature ta ? high temperature * dv in : high voltage value - low voltage value for reference, the next page describes the results of measuring the ringing amounts at the v out pin using the output current (i out ), load capacitance (c l ), input voltage fluctuation width (dv in ), and temperature as parameters. v ref v out x (0.1) mv/ c typ. figure 7 output voltage fluctuation due to input voltage fluctuation input voltage 6.0 10 v undershoot overshoot output voltage figure 8 measuring circuit fast amplifier p.g. s-812xxsg oscilloscope c l v out v ss v in + - discontinued product
high-precision voltage regulator s-812xxsg series 20 seiko instruments inc. - 2. load transient response the overshoot and undershoot are caused in the output voltage if the output current fluctuates while the input voltage is costant. figure 9 shows the output voltage fluctuation due to output current change between 10ma and 1 ma in square wave. table 45 shows the parameter dependency when output current fluctuates. for reference, figure 10 describes the measuring circuit. line transient response of s-81250sg reference data 1. i out dependency c l =10 m f ta=25c 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 5 10 15 20 25 30 ringing amount (v) i out (ma) 2. c l dependency undershoot overshoot i out =10ma ta=25c 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 ringing amount (v) 10 20 30 40 50 c l ( m f) 4. temperature dependency undershoot overshoot i out =10ma c l =10mf 1.2 1.0 0.8 0.6 0.4 0.2 0.0 ringing amount (v) 80400 -40 ta ( c) 3. d v in dependency dv in shows the difference between the low voltage fixed to 6 v and the high voltage. for example, dv in = 2 v means the difference between 6 v and 8 v. 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 ringing amount (v) 1 2 4 5 d v in (v) 3 c l =10 m f ta=25c i out =10ma figure 9 output voltage fluctuation due to output current fluctuation output current 10ma 1 m a output voltage overshoot undershoot figure 10 measuring circuit s-812xxsg oscilloscope c l v out v s v in + - discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 21 table 45 parameter dependency due to output current fluctuation parameter method to decrease overshoot method to decrease undershoot output current fluctuation di out decrease decrease load capacitance c l increase increase input voltage v in increase increase temperature ta ? ? for reference, the following describes the results of measuring the ringing amounts at the v out pin using the input voltage (v in ), load capacitance (c l ), output current fluctuation width (di out ), and temperature as parameters. load transient response of s-81250sg reference data 2. c l dependency v in =7v ta=25c 0.5 0.4 0.3 0.2 0.1 0.0 0 10 20 30 40 50 c l ( m f) ringing amount (v) 3. d i out dependency di out shows the difference between the low current fixed to 1 ma and the high. for example, di out =10 ma means the difference between 10ma and 1 ma. c l =10 m f ta=25c v in =7v 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 5 10 15 20 25 30 d i out (ma) ringing amount (v) 4. temperature dependency undershoot overshoot v in =7v c l =10mf 0.5 0.4 0.3 0.2 0.1 0 40 80 - 40 ta ( c) ringing amount (v) 1. v in dependency 0.6 0.5 0.4 0.3 0.2 0.1 0.0 6 8 10 12 14 16 ringing amount (v) v in (v) c l =10 m f ta=25c discontinued product
high-precision voltage regulator s-812xxsg series 22 seiko instruments inc. nn standard circuit the basic circuit using the s-812xxsg series is shown in figure 11. nn application circuits 1. high output current positive voltage regulator single-point gnd common common c o c i v out v in 3 2 1 s-812xxsg series figure 11 figure 12 shows a circuit for increasing the output current. short-circuit protection of tr1 is possible by adding the sense resistor r s and the pnp transistor as shown in figure 13. r tr1 gnd v out v in v in v out common figure 12 s-812xxsg series gnd rs r v in tr2 tr1 v in v out common s-812xxsg series figure 13 discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 23 2. circuits for increasing output voltage 3. constant current regulator 4. dual supply if the output voltage you need cannot be found in our product line-up, the designs in figures 14 or 15 will increase output voltages easily. v out =vxx 1 1 2 1 2 2 1 + ? ? ? ? + @ + ? ? ? ? r r iss r vxx r r because of its low current consumption, the s-812xxsg series can set the resistor values, and r 1 and r 2 high to lower the power consumption of whole systems. current flows to the zener diode (di) through the quiescent current (i ss ) of the s-812xxsg series, and the gnd terminal rises for the voltage of di. when di cannot drive with a quiescent current, the added resistance r increases the current flowing through di. gnd v out i ss r 2 r 1 v out v in v in v xx s-812xxsg series figure 14 di gnd r i ss v out v out v in v in s-812xxsg series figure 15 the s-812xxsg series can be used as a constant- current regulator within allowable dissipation limits. i out = v xx r a + i ss i out r l gnd v xx gnd i ss r a v out v i n v in s-812xxsg series figure 16 constant current regulator a dual supply can be formed using the s-812xxsg series. figure 17 shows a circuit example for receiving two outputs (5 v and 8 v) with the s-81230sg and the s- 81250sg. as the resistance r lets the quiescent current of ic1 pass, r is unnecessary if the minimum output current of ic2 is more than the ic1 quiescent current. v out 2 gnd gnd gn ic2 ic v out v out +5 v +8 v v out 1 v in v in r v in s-81230 sg s-81250 sg figure 17 dual power source discontinued product
high-precision voltage regulator s-812xxsg series 24 seiko instruments inc. nn notes on design voltage regulators may oscillate if small or zero capacity is connected to ic input when the impedance of the power source is high and a large capacity is connected to ic output. the s-812xxsg series has no short-current circuit limiting. the element may break by exceed current of errorneous short-current. keep the output current more than 10 ma when using the product of v out 2.6 v under the condition of high input voltage and high temperature. do not apply any ripple voltage under the condition in figure 18 to v in terminal. mount diodes for ic protection, when connecting another power supply to v out terminal. when designing for mass production using an application circuit described here, keep the deviation of components and temperature characteristic. figure 18 f v pp v [v] f [hz] v pp 3 0.5 v f 3 1000 hz v out out gnd v in v / r figure 19 discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 25 nn package power dissipation 600 400 200 50 100 150 0 ta (c) 0 (1) to-92 power dissipation p d (mw) before mounted 600 400 200 50 100 150 0 ta (c) 0 (2) sot-89-3 power dissipation p d (mw) before mounted figure 20 400 300 200 100 25 75 50 100 150 0 ta (c) 0 125 (3) sot-23-5 power dissipation p d (mw) before mounted discontinued product
high-precision voltage regulator s-812xxsg series 26 seiko instruments inc. nn characteristics 1 input voltage - output voltage 1.4 s-81225sg series 1.1 s-81211sg series 1.8 1.2 0.7 0.8 ta=25 c v out (v) i out =3 ma i out =1 ma i out =0.5 ma v in (v) 1.1 1.0 0.9 0.8 1.6 1.4 1.2 1.0 1.2 s-81215sg series v in (v) v out (v) 2.0 2.0 1.0 1.0 ta=25 c i out =0.5 ma i out =3 ma i out =1 ma 1.2 1.4 1.6 1.8 1.8 1.6 1.4 1.2 1.3 s-81220sg series 3.0 2.2 1.2 1.5 ta=25 c v out (v) i out =3 ma i out =1 ma i out =0.5 ma v in (v) 2.0 1.4 1.6 1.8 1.8 2.1 2.4 2.7 v out (v) 3.5 2.7 1.7 2.0 ta=25 c i out =3 ma i out =1 ma i out =0.5 ma v in (v) 2.5 1.9 2.1 2.3 3.2 2.3 2.6 2.9 1.6 s-81235sg series v out (v) 4.5 4.0 3.0 3.0 ta=25 c i out =1 ma i out =20 ma i out =10 ma v in (v) 3.8 3.6 3.2 3.4 4.2 3.3 3.6 3.9 1.5 s-81230sg series 4.0 3.2 2.2 2.5 ta=25 c v out (v) i out =1 ma i out =20 ma i out =10 ma v in (v) 3.0 2.8 2.4 2.6 3.7 2.8 3.1 3.4 1.7 s-81240sg series 5.0 4.2 3.2 3.5 v in (v) ta=25 c v out (v) i out =1 ma i out =20 ma i out =10 ma 4.0 3.8 3.4 3.6 4.7 3.8 4.1 4.4 1.8 s-81245sg series v out (v) 5.5 5.0 4.0 4.0 ta=25 c i out =1 ma i out =20 ma i out =10 ma v in (v) 4.8 4.6 4.2 4.4 5.2 4.3 4.6 4.9 discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 27 2. output current - output voltage 1.9 s-81250sg series 6.0 5.2 4.2 4.5 ta=25 c v out (v) i out =1 ma i out =20 ma i out =10 ma v in (v) 5.7 4.8 5.1 5.4 5.0 4.8 4.4 4.6 2.1 s-81211sg series 10 1.2 0.7 0 i out (ma) v in =1.5v v out (v) -40 c 85 c 25 c 8 2 4 6 1.1 1.0 0.8 0.9 2.2 s-81215sg series 100 1.5 v in =3.5v v out (v) 0.5 0 -40 c 85 c 25 c i out (ma) 80 20 40 60 1.3 1.1 0.7 0.9 2.3 s-81220sg series 100 2.0 v in =4.0v v out (v) 1.0 0 85 c 25 c -40 c i out (ma) 80 20 40 60 1.8 1.6 1.2 1.4 2.4 s-81225sg series 100 2.5 v in =4.5v v out (v) 1.5 0 i out (ma) 80 20 40 60 2.3 2.1 1.7 1.9 85 c 25 c -40 c 2.5 s-81230sg series 100 3.0 v in =5.0v v out (v) 2.0 0 -40 c 25 c 85 c i out (ma) 80 20 40 60 2.8 2.6 2.2 2.4 2.6 s-81235sg series 100 3.5 v in =5.5v v out (v) 2.5 0 -40 c 25 c 85 c i out (ma) 80 20 40 60 3.3 3.1 2.7 2.9 discontinued product
high-precision voltage regulator s-812xxsg series 28 seiko instruments inc. 3. output current - output voltage (at low load) i out (ma) 2.7 s-81240sg series 100 4.0 3.0 0 v in =6.0v v out (v) -40 c 25 c 85 c 80 20 40 60 3.8 3.6 3.2 3.4 2.8 s-81245sg series 100 4.5 v in =6.5v v out (v) 3.5 0 -40 c 85 c 25 c i out (ma) 80 20 40 60 4.3 4.1 3.7 3.9 i out (ma) 2.9 s-81250sg series 100 5.0 v in =7.0v v out (v) 4.0 0 -40 c 25 c 85 c 80 20 40 60 4.8 4.6 4.2 4.4 3.1 v out 1.4v 100 2.0 1.0 ta=85 c v out (v) v in =10v v in =8v v in =6v v in =4v 10 1 0.1 0.01 0.001 1.8 1.6 1.4 1.2 i out (ma) 3.2 1.5vv out 2.6v v out (v) 1.7 1.5 ta=85 c v in =10v v in =8v v in =4v v in =6v 100 10 1 0.1 0.01 0.001 1.6 1.4 i o ut (ma) 3.3 v out 32.7v 3.1 2.9 v out (v) ta=85 c v in =16v v in =10v v in =7v v in =12v 100 10 1 0.1 0.01 0.001 3.0 i out (ma) discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 29 4. input voltage - current consumption 5. temperature characteristic of output voltages 6. i/o voltage difference characteristics s-81250sg series 2.0 0 0 vin (v) i ss (ma) 85 c 25 c -40 c 1.0 4 6 8 10 12 14 16 18 20 2 5.2 v out 3 1.4 v -0.5 -1.0 0 0.5 -40 0 20 40 60 ta ( c) -20 80 * (%) 5.1 v out 3 1.3 v -0.5 -1.0 0 0.5 1.0 -40 0 20 40 60 ta ( c) -20 80 * (%) * definite with fluctuation ratio based on the output voltage at ta=25 c 6.1 s-81211sg series (vinitial:output voltage value at v in =1.5 v and i out =0.5 ma) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =5 ma i out =3 ma i out =2 ma i out =1 ma i out =0.5 ma 6.2 s-81215pg series (vinitial:output voltage value at v in =3.5 v and i out =0.5 ma) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out =5 ma i out =10 ma discontinued product
high-precision voltage regulator s-812xxsg series 30 seiko instruments inc. 6.5 s-81230sg series (vinitial:output voltage value at v in =5.0 v and i out =10 ma) 6.3 s-81220sg series (vinitial:output voltage value at v in =4.0 v and i out =10 ma) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out =5 ma i out =20 ma i out =10 ma 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out =5 ma i out =10 ma i out = 20 ma i out = 30 ma 1.02 6.4 s-81225sg series (vinitial:output voltage value at v in =4.5 v and i out =10 ma) v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out =5 ma i out =10 ma i out = 20 ma i out = 30 ma 6.6 s-81235sg series (vinitial:output voltage value at v in =5.5 v and i out =10 ma) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out = 5 ma i out = 10 ma i out = 20 ma i out = 30 ma 0.6 v in -vinitial (v) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.8 1.0 ta=25 c i out =1 ma i out = 5 ma i out = 10 ma i out = 20 ma i out =30 ma 6.7 s-81240sg series (vinitial:output voltage value at v in =6.0 v and i out =10 ma) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out =5 ma i out = 10 ma i out = 20 ma i out =30 ma 6.8 s-81245sg series (vinitial:output voltage value at v in =6.5 v and i out =10 ma) 6.9 s-81250pg series (vinitial:output voltage value at v in =7.0 v and i out =10 ma) 1.02 v out vinitial 0.92 0.90 0.94 0.96 0.98 1.00 0.0 0.2 0.4 0.6 0.8 1.0 v in -vinitial (v) ta=25 c i out =1 ma i out =5 ma i out = 10 ma i out =20 ma i out =30 ma discontinued product
high-precision voltage regulator s-812xxsg series seiko instruments inc. 31 7. temperature characteristic of i/o voltage difference 7.2 s-81215sg series ta ( c) 100 0 200 300 400 500 -50 -30 -10 10 30 50 70 90 i out =0.5 ma i out =1 ma i out =3 ma v dif (mv) i out =5 ma 7.1 s-81211sg series v dif (mv) ta ( c) 100 0 200 300 400 500 -50 -30 -10 10 30 50 70 90 i out =5 ma i out =3 ma i out =2 ma i out =1 ma i out =0.5 ma 7.5 s-81230sg series 1.5 1.0 0.5 0 v dif (v) ta ( c) -50 -30 -10 10 30 50 70 90 i out =30 ma i out =20 ma i out =10 ma i out =5 ma 7.6 s-81235sg series 1.5 1.0 0.5 0 ta ( c) v dif (v) -50 -30 -10 10 30 50 70 90 i out =30 ma i out =20 ma i out =10 ma i out =5 ma 7.4 s-81225sg series 1.5 1.0 0.5 0 -50 -30 -10 10 30 50 70 90 v dif (v) ta ( c) i out =30 ma i out =20 ma i out =10 ma i out =5 ma i out =1 ma 7.3 s-81220sg series 1.5 1.0 0.5 0 -50 -30 -10 10 30 50 70 90 i out =1 ma i out =5 ma i out =10 ma i out =20 ma i out =30 ma v dif (v) ta ( c) discontinued product
high-precision voltage regulator s-812xxsg series 32 seiko instruments inc. nn measuring circuits 7.8 s-81245sg series 7.7 s-81240sg series 1.5 1.0 0.5 0 ta ( c) v dif (v) -50 -30 -10 10 30 50 70 90 i out =30 ma i out =20 ma i out =10 ma i out =5 ma 7.9 s-81250sg series 1.5 1.0 0.5 0 ta ( c) v dif (v) -50 -30 -10 10 30 50 70 90 i out =30 ma i out =20 ma i out =10 ma i out =5 ma 1.5 1.0 0.5 0 ta ( c) v dif (v) -50 -30 -10 10 30 50 70 90 i out =30 ma i out =20 ma i out =10 ma i out =5 ma figure 21 3. current consumption gnd v out v in a r l gnd v out v in v a 2. output current - output voltage 1. input voltage - output voltage i out gnd v out v in v v a discontinued product
12.71.0 12.70.3(20 pitches 254.01.0 6.350.4 f 4.00.2 0.5max. 6.00.5 24.7max marked side 1 # pin 3 # pin 1.0max. 1.0max. 0.70.2 1.45max. feed direction 2.5min. feed direction marked side ftype t type no. yf003 a c sd 1 0 f 358 2 43 0.5 53 0.5 5 0.5 45 0.5 side spacer(place it in front) 330 47 262 leave enough space to accommodate 4 components. spacer 320 40 60 side spacer 165 320 feed derection 5.2max. 4.2max. 0.6max . 0.45 0.1 0.45 0.1 1.27 to-92 dimensions taping specifications reel specifications 4.2max. 0.45 0.1 1.27 5.2max. 0.45 0.1 0.6max. 2.5 +0.4 - 0.1 switch-back(wrap) specifications (1)loose (2)taped (reel/zigzag) yf003-a 990531 f 30 0.5 unit:mm 1 reel holds 2000 ics. marked side marked side feed direction discontinued product
3.250.15 ?1.5 +0.1 -0 ?1.0 +0.1 -0 4.00.1 2.00.05 0.270.05 1.40.2 feed direction sot-23-5 mp005-a 990531 0.95 0.1 2.90.2 +0.1 -0.06 0.16 1.90.2 0.40.1 12 3 4 5 210.5 20.2 (60) (60) f 130.2 12.5max. 9.00.3 +0.2 -0.3 2.8 1.6 1.10.1 0.45 1.3max 3 max. 3 max. 4.00.1 (10 pitches 40.00.2) taping specifications reel specifications dimensions unit mm 1 reel holds 3000 ics. discontinued product
2.00.1 0.30.05 4.00.1 10 pitches 40.00.2 8.00.1 ?1.5 +0.1 -0 2.00.05 ?1.5 +0.1 -0 4.750.1 13.00.3 16.5max (60) (60) sot-89-3 up003-a 990531 1.50.1 4.50.1 1.60.2 1.50.1 1.50.1 0.450.1 0.40.1 0.40.1 45 3 12 5 max. winding core unit:mm dimensions taping specifications reel specifications 1 reel holds 1000 ics. feed direction discontinued product
markings 990603 to-92 sot-23-5 sot-89-3 812 1 1 discontinued product
the information herein is subject to change without notice. seiko instruments inc. is not responsible for any problems caused by circuits or other diagrams described herein whose industrial properties, patents or other rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarantee any mass-production design. when the products described herein include strategic products (or service) subject to regulations, they should not be exported without authorization from the appropriate governmental authorities. the products described herein cannot be used as part of any device or equipment which influences the human body, such as physical exercise equipment, medical equipment, security system, gas equipment, vehicle or airplane, without prior written permission of seiko instruments inc. discontinued product

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