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rev.6.2 _00 high withstand-voltage voltage regulator wi th reset function s-87x series seiko instruments inc. 1 the s-87x series is a low-power high withstand- voltage regulators with a reset function, which integrates high-precision voltage detection and voltage regulation circuits on a single chip. the s-87x series has lineups for lithium-ion battery packs. ? features ? accuracy of output voltage: 2.4 % 2.6 v to 5.8 v (0.1 v step) ? accuracy of detection voltage: 2.4 % (for the f type, the release voltage is 1.1 %) 2.1 v to 11.3 v (0.1 v step) ? low i/o voltage difference: 0.15 v typ. (at i out = 30 ma, v out = 5.0 v) 0.45 v typ. (at i out = 30 ma, v out = 3.0 v) ? low current consumption: at operation mode: 8 a max. at shutdown mode: 3.5 a max. (available for the c/e/g type) ? wide operating voltage range: 24 v max. ? wide operating temperature range: ? 40c to + 85c ? built-in delay circuit or shutdown circuit ? built-in short-circuit protection circuit ? small package: sot-89-5 ? applications ? constant voltage power supply or reset circuit of battery-powered equipment, vtr, camera, communications equipment and others. ? lithium-ion secondary battery pack ? package package name drawing code package tape reel sot-89-5 up005-a up005-a up005-a
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 2 ? block diagrams 1. a/f type vin voltage regulator vout vor vss cd delay circuit short-circuit protection circuit voltage detection circuit figure 1 2. b type vin voltage regulator vout vor vss cd delay circuit short-circuit p rotection circuit voltage detection circuit figure 2
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 3 3. c type vin voltage regulator voltage detection circuit vout vor vss vpf short-circuit protection circuit shutdown circuit figure 3 4. e type vin voltage regulator power on/off vout vss sense vor short-circuit protection circuit voltage detection circuit figure 4
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 4 5. g type vin voltage regulator voltage detection circuit shutdown circuit vout vor vss vpf short-circuit p rotection circuit figure 5
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 5 ? product code structure 1. function list table 1 shutdown function type name voltage detector (vd) detection voltage ( ? v det ) accuracy [%] release voltage ( + v det ) accuracy [%] built-in delay circuit vr vd a type detects v in 2.4 ? yes no no b type detects v out 2.4 ? yes no no c type detects v in 2.4 ? no yes no e type detects v sense 2.4 ? no yes no f type detects v in ? 1.1 yes no no g type detects v out 2.4 ? no yes no 2. product name selection guide s-87 xx xx x up - xxx - t2 ic direction in the tape sepecifications *1 product name (abbreviation) *2 package name (abbreviation) up: sot-89-5 product type a: built-in delay circuit, v in detection ( ? v det detection) b: built-in delay circuit, v out detection c: built-in shudown circuit for regulator, v in detection e: built-in shudown circuit for regulator, v sense detection f: built-in delay circuit, v in detection ( + v det detection) g: built-in shudown circuit for regulator, v out detection detection voltage of voltage detector 21 to 94, a0, b0, b3 (ex. when the detection voltage of voltage detector is 2.1 v, it is expressed as 21. *3 ) output voltage of voltage regulator 26 to 56 (ex. when the output vo ltage of voltage regulator is 2.6 v, it is expressed as 26.) *1. refer to the taping specificat ions at the end of this document. *2. refer to the table 2 to table 3 in the ? 3. product name list ?. *3. a0 for 10.0 v, b0 for 11.0 v, b3 for 11.3 v.
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 6 3. product name list table 2 (1/2) vr output voltage [v] vd detection voltage [v] s-87xxxxa series s-87xxxxb series s-87xxxxc series 5.6 3.5 D s-875635bup-aga-t2 D 5.2 9.4 D D s-875294cup-ahc-t2 7.1 D D s-875271cup-aha-t2 5.5 D D s-875255cup-ahb-t2 5.0 11.0 D D s-8750b0cup-acg-t2 7.7 s-875077aup-aaf-t2 D s-875077cup-acf-t2 6.1 D D s-875061cup-ach-t2 4.5 s-875045aup-aaa-t2 s-875045bup -aba-t2 s-875045cup-aca-t2 4.3 s-875043aup-aab-t2 s-875043bup -abb-t2 s-875043cup-acb-t2 4.1 s-875041aup-aac-t2 s-875041b up-abc-t2 s-875041cup-acc-t2 3.9 s-875039aup-aad-t2 s-875039b up-abd-t2 s-875039cup-acd-t2 3.7 s-875037aup-aae-t2 s-875037bup -abe-t2 s-875037cup-ace-t2 3.4 ? s-875034bup-abf-t2 ? 2.9 ? S-875029BUP-ABH-T2 ? 2.1 ? s-875021bup-abg-t2 ? 3.3 7.7 s-873377aup-0aa-t2 ? ? 6.1 D D s-873361cup-aoh-t2 2.8 s-873328aup-0ab-t2 ? ? 2.5 D s-873325bup-ala-t2 D 3.0 6.9 D D s-873069cup-aff-t2 5.9 D D s-873059cup-afg-t2 2.5 s-873025aup-ada-t2 s-873025b up-aea-t2 s-873025cup-afa-t2 2.4 s-873024aup-adb-t2 s-873024b up-aeb-t2 s-873024cup-afb-t2 2.3 s-873023aup-adc-t2 s-873023bup-aec-t2 s-873023cup-afc-t2 2.2 s-873022aup-add-t2 s-873022bup-aed-t2 s-873022cup-afd-t2 2.1 s-873021aup-ade-t2 s-873021b up-aee-t2 s-873021cup-afe-t2 2.6 2.2 D s-872622bup-ola-t2 D
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 7 table 2 (2/2) vr output voltage [v] vd detection voltage [v] s-87xxxxe series s-87xxxxg series 5.0 11.0 s-8750b0eup-aji-t2 D 8.7 s-875087eup-ajg-t2 ? 7.7 s-875077eup-ajf-t2 D 6.1 s-875061eup-ajh-t2 D 3.7 D s-875037gup-ane-t2 3.3 s-875033eup-aja-t2 ? 3.0 s-875030eup-ajb-t2 ? 3.3 v 11.0 s-8733b0eup-apc-t2 ? 10.0 s-8733a0eup-apf-t2 D 7.2 s-873372eup-ape-t2 ? 4.8 s-873348eup-apd-t2 ? 3.0 s-873330eup-apb-t2 ? 3.0 v 11.3 s-8730b3eup-amf-t2 ? 8.2 s-873082eup-amc-t2 ? 6.2 s-873062eup-amb-t2 ? 5.0 s-873050eup-ame-t2 ? 4.2 s-873042eup-amd-t2 ? caution in the s-87xxxxb/s-87xxxxg series, when the output voltage of the voltage regulator is close to the detection voltage of the voltage detector, the transient response of the voltage regulator may cause false detection. please take transient response into account when deciding voltages. table 3 vr output voltage [v] vd release voltage [v] s-87xxxxf series 5.0 8.7 s-875087fup-aka-t2
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 8 ? pin configuration table 4 pin no. symbol pin description 1 vout voltage output pin of voltage regulator 2 vss ground pin 3 cd (a/b/f type) connection pin of external capacitor for delay of voltage detector vpf (c/g type) input pin of shutdown circuit sense (e type) voltage monitoring pin of voltage detector sot-89-5 top view 1 3 2 4 5 4 vor output pin of voltage detector, nch opendrain output 5 vin positive power-supply figure 6 ? absolute maximum ratings table 5 (unless otherwise specified: ta = 25c) item symbol absolute maximum rating unit input voltage *1 v in (a/b/f type) v ss ? 0.3 to v ss + 26 v pf v (c/g type) v sense (e type) output voltage v out v ss ? 0.3 to v in + 0.3 output voltage of voltage detector v or v ss ? 0.3 to v ss + 26 power dissipation p d 500 mw operating ambient temperature topr ? 40 to + 85 c storage temperature tstg ? 40 to + 125 *1. even pulse ( s) noise exceeding the above input voltage (v ss + 26 v) may damage the ic. observe the rated input voltage (v ss + 26 v). caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefore not be exceeded under any conditions.
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 9 ? electrical characteristics 1. s-8750xxa series/s-8750xxb series table 6 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 7 v, i out = 30 ma 4.88 5.00 5.12 v 1 i/o voltage difference v dif i out = 30 ma ? 0.15 0.40 line regulation ? v out1 v in = 6 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 7 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 7 v, i out = 30 ma, ta =? 40c to + 85c ? 0.38 1.52 mv /c voltage detector operating voltage v opr ? 1.3 ? 24 v 2 delay time *1 t pd c d = 4.7 nf 15 27 41 ms 3 tempertue characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.5 2.0 mv /c 2 detection voltage ? v det s-875045a/b 4.392 4.50 4.608 v s-875043a/b 4.196 4.30 4.404 s-875041a/b 4.001 4.10 4.199 s-875039a/b 3.806 3.90 3.994 s-875037a/b 3.611 3.70 3.789 s-875021b 2.049 2.10 2.151 sink current i dout v in = 1.3 v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4 v 1.50 2.60 ? v in = 3.6 v 3.00 4.50 ? leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys s-875045a/b ? v det 0.01 ? ? v det 0.025 v 2 s-875043a/b to s-875021a/b ? v det 0.03 ? ? v det 0.08 input current current consumption *2 i ss v in = 7 v, unloaded ? 3 8 a 5 *1. t pd (ms) = (3.18 min., 5.74 typ., 8.73 max.) c d (nf) *2. excluding the charging current of c d
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 10 2. s-8730xxa series/s-8730xxb series table 7 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 5 v, i out = 30 ma 2.928 3.000 3.072 v 1 i/o voltage difference v dif i out = 30 ma ? 0.45 0.70 line regulation ? v out1 v in = 4 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 5 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 5 v, i out = 30 ma, ta =? 40c to + 85c ? 0.23 0.92 mv /c voltage detector operating voltage v opr ? 1.3 ? 24 v 2 delay time *1 t pd c d = 4.7 nf 15 27 41 ms 3 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.3 1.2 mv /c 2 detection voltage ? v det s-873025a/b 2.440 2.500 2.560 v s-873024a/b 2.342 2.400 2.458 s-873023a/b 2.244 2.300 2.356 s-873022a/b 2.147 2.200 2.253 s-873021a/b 2.049 2.100 2.151 sink current i dout nch, v ds = 0.5 v v in = 1.3 v other than below 0.25 0.60 ? ma 4 v in = 2.4 v s-873025a/b 1.50 2.60 ? leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption *2 i ss v in = 5 v, unloaded ? 3 8 a 5 *1. t pd (ms) = (3.18 min., 5.74 typ., 8.73 max.) c d (nf) *2. excluding the charging current of c d
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 11 3. s-875635b table 8 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 7.6 v, i out = 30 ma 5.465 5.60 5.735 v 1 i/o voltage difference v dif i out = 30 ma ? 0.15 0.40 line regulation ? v out1 v in = 6.6 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 7.6 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 7.6 v, i out = 30 ma, ta =? 40c to + 85c ? 0.43 1.72 mv /c voltage detector operating voltage v opr ? 1.3 ? 24 v 2 delay time *1 t pd c d = 4.7 nf 15 27 41 ms 3 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.3 1.2 mv /c 2 detection voltage ? v det ? 3.416 3.50 3.584 v sink current i dout v in = 1.3 v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4 v 1.50 2.60 ? leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption *2 i ss v in = 7.6 v, unloaded ? 4 8 a 5 *1. t pd (ms) = (3.18 min., 5.74 typ., 8.73 max.) c d (nf) *2. excluding the charging current of c d
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 12 4. s-873325b table 9 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 5.3 v, i out = 30 ma 3.220 3.300 3.380 v 1 i/o voltage difference v dif i out = 30 ma ? 0.45 0.70 line regulation ? v out1 v in = 4.3 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 5.3 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 5.3 v, i out = 30 ma, ta =? 40c to + 85c ? 0.25 1.00 mv /c voltage detector operating voltage v opr ? 1.3 ? 24 v 2 delay time *1 t pd c d = 4.7 nf 15 27 41 ms 3 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.2 0.8 mv /c 2 detection voltage ? v det ? 2.440 2.500 2.560 v sink current i dout nch, v ds = 0.5 v, v in = 1.3 v 0.25 0.60 ? ma 4 leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption *2 i ss v in = 5.3 v, unloaded ? 4 8 a 5 *1. t pd (ms) = (3.18 min., 5.74 typ., 8.73 max.) c d (nf) *2. excluding the charging current of c d
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 13 5. s-8750xxc series/s-875037g table 10 (1/2) (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 7 v, i out = 30 ma 4.88 5.00 5.12 v 1 i/o voltage difference v dif i out = 30 ma ? 0.15 0.40 line regulation ? v out1 v in = 6 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 7 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 7 v, i out = 30 ma, ta =? 40c to + 85c ? 0.38 1.52 mv /c shutdown output voltage v out/off v in = 7 v, pf v = ?l?, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c s-8750b0c ? 0.8 3.2 mv /c 2 s-875077c ? 0.6 2.4 s-875061c to s-875037c, s-875037g ? 0.5 2.0 detection voltage ? v det s-8750b0c 10.736 11.00 11.264 v s-875077c 7.515 7.70 7.885 s-875061c 5.953 6.10 6.247 s-875045c 4.392 4.50 4.608 s-875043c 4.196 4.30 4.404 s-875041c 4.001 4.10 4.199 s-875039c 3.806 3.90 3.994 s-875037c/s-875037g 3.611 3.70 3.789 sink current i dout v in = 1.3 v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4 v 1.50 2.60 ? v in = 3.6 v 3.00 4.50 ? leakage current i leak nch, v ds = 24 v v in = 10 v s-875077c to s-875037c, s-875037g ? ? 0.1 a v in = 15 v s-8750b0c hysteresis width v hys s-875045c ? v det 0.01 ? ? v det 0.025 v 2 s-8750b0c to s-875061c, s-875043c to s-875037c, s-875037g ? v det 0.03 ? ? v det 0.08
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 14 table 10 (2/2) (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit input current current consumption i ss v in = 7 v, unloaded s-8750b0c to s-875061c ? 4 8 a 5 s-875045c to s-875037c, s-875037g ? 3 8 l of pf v = ?l?, shutdown, v in = 7 v ? 1.5 3.5 shutdown input voltage v il pf v = ?l?, shutdown, v in = 7 v ? ? 0.4 v 6 v ih pf v = ?h?, power on, v in = 7 v 2.0 ? ?
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 15 6. s-8730xxc series table 11 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 5 v, i out = 30 ma 2.928 3.000 3.072 v 1 i/o voltage difference v dif i out = 30 ma ? 0.45 0.70 line regulation ? v out1 v in = 4 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 5 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 5 v, i out = 30 ma, ta =? 40c to + 85c ? 0.23 0.92 mv /c shutdown output voltage v outoff v in = 5v, pf v = ?l?, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 s-873069c ? 0.5 2.0 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c s-873025c to s-873021c ? 0.3 1.2 mv /c detection voltage ? v det s-873069c 6.734 6.900 7.066 v s-873025c 2.440 2.500 2.560 s-873024c 2.342 2.400 2.458 s-873023c 2.244 2.300 2.356 s-873022c 2.147 2.200 2.253 s-873021c 2.049 2.100 2.151 sink current i dout nch, v ds = 0.5 v v in = 1.3 v other than below 0.25 0.60 ? ma 4 v in = 2.4 v s-873069c, s-873025c 1.50 2.60 ? v in = 3.6 v s-873069c 3.00 4.50 ? leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current i ss v in = 5 v, unloaded ? 3 8 a 5 current consumption l of pf v = ?l?, shutdown, v in = 5 v ? 1.5 3.5 input voltage shutdown input voltage v il pf v = ?l?, shutdown, v in = 5 v ? ? 0.4 v 6 v ih pf v = ?h?, power on, v in = 5 v 2.0 ? ?
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 16 7. s-875271c, s-875255c table 12 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 7.2 v, i out = 30 ma 5.075 5.20 5.325 v 1 i/o voltage difference v dif i out = 30 ma ? 0.15 0.40 line regulation ? v out1 v in = 6.2 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 7.2 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 7.2 v, i out = 30 ma, ta =? 40c to + 85c ? 0.40 1.60 mv /c shutdown output voltage v outoff v in = 7.2v, pf v = ?l?, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 s-875271c ? 0.5 2.0 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c s-875255c ? 0.4 1.6 mv /c s-875271c 6.929 7.10 7.271 v detection voltage ? v det s-875255c 5.368 5.50 5.632 sink current i dout v in = 1.3v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4v 1.50 2.60 ? v in = 3.6v 3.00 4.50 ? leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption i ss v in = 7.2 v, unloaded ? 4 8 a 5 l of pf v = ?l?, shutdown, v in = 7.2 v ? 1.5 3.5 input voltage shutdown input voltage v il pf v = ?l?, shutdown, v in = 7.2 v ? ? 0.4 v 6 v ih pf v = ?h?, power on, v in = 7.2 v 2.0 ? ?
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 17 8. s-875294c table 13 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 14.4 v, i out = 30 ma 5.075 5.20 5.325 v 1 i/o voltage difference v dif i out = 30 ma ? 0.15 0.40 line regulation ? v out1 v in = 6.2 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 14.4 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 14.4 v, i out = 30 ma, ta =? 40c to + 85c ? 0.40 1.60 mv /c shutdown output voltage v outoff v in = 14.4 v, pf v = ?l?, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.7 2.8 mv /c detection voltage ? v det ? 9.174 9.40 9.626 v v in = 1.3 v 0.25 0.60 ? v in = 2.4 v 1.50 2.60 ? sink current i dout nch, v ds = 0.5 v v in = 3.6 v 3.00 4.50 ? ma 4 leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption i ss v in = 14.4 v, unloaded ? 4 9 a 5 l of pf v = ?l?, shutdown,, v in = 14.4 v ? 2.1 4.7 input voltage shutdown input voltage v il pf v = ?l?, shutdown, v in = 14.4 v ? ? 0.4 v 6 v ih pf v = ?h?, power on, v in = 14.4 v 2.6 ? ?
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 18 9. s-873361c table 14 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 5.3 v, i out = 30 ma 3.220 3.300 3.380 v 1 i/o voltage difference v dif i out = 30 ma ? 0.45 0.70 line regulation ? v out1 v in = 4.3 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 5.3 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 5.3 v, i out = 30 ma, ta =? 40c to + 85c ? 0.25 1.00 mv /c shutdown output voltage v outoff v in = 5.3 v, pf v = ?l?, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.5 2.0 mv /c detection voltage ? v det ? 5.953 6.100 6.247 v sink current i dout v in = 1.3 v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4 v 1.50 2.60 ? v in = 3.6 v 3.00 4.50 ? leakage current i leak nch, v ds = 24 v, v in = 10 v ? ? 0.1 a hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption i ss v in = 5.3 v, unloaded ? 4 8 a 5 l of pf v = ?l?, shutdown, v in = 5.3 v ? 1.5 3.5 input voltage shutdown input voltage v il pf v = ?l?, shutdown, v in = 5.3 v ? ? 0.4 v 6 v ih pf v = ?h?, power on, v in = 5.3 v 2.0 ? ?
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 19 10. s-8750xxe series table 15 (unless otherwise specified: ta = 25c, connect the sense pin to the vin pin.) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 7 v, i out = 30 ma, v sense =? v det (typ.) + 2 v 4.88 5.00 5.12 v 1 i/o voltage difference v dif i out = 30 ma, v sense =? v det (typ.) + 2 v ? 0.15 0.40 line regulation ? v out1 v in = 6 to 24 v, i out = 30 ma, v sense =? v det (typ.) + 2 v ? 15 50 mv load regulation ? v out2 v in = 7 v, i out = 50 a to 40 ma, v sense =? v det (typ.) + 2 v ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 7 v, i out = 30 ma, ta =? 40c to + 85c, v sense =? v det (typ.) + 2 v ? 0.38 1.52 mv /c output voltage during voltage detection v outoff v in =? v det (typ.) ? 1v, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 s-875077e ? 0.6 2.4 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c s-875061e 0.5 2.0 mv /c s-875077e 7.515 7.70 7.885 v detection voltage ? v det s-875061e 5.953 6.10 6.247 sink current i dout nch, v ds = 0.5 v v in = 1.3 v 0.25 0.60 ? ma 4 v in = 2.4 v 1.50 2.60 ? v in = 3.6 v 3.00 4.50 ? leakage current i leak nch, v ds = 24 v, v in =? v det (typ.) + 2 v ? ? 0.1 a sense pin input current l sense s-875077e ? 0.6 1.7 7 v in = 7 v, v sense =? v det (typ.) + 2 v s-875061e ? 0.7 1.8 hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption i ss s-875077e ? 4 8 a 5 v in =? v det (typ.) + 2 v, unloaded s-875061e ? 4 9 l of v in =? v det (typ.) ? 1 v, shutdown ? 1.5 3.5
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 20 11. s-8730xxe series table 16 (unless otherwise specified: ta = 25c, connect the sense pin to the vin pin.) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 5 v, i out = 30 ma, v sense =? v det (typ.) + 2 v 2.928 3.000 3.072 v 1 i/o voltage difference v dif i out = 30 ma, v sense =? v det (typ.) + 2 v ? 0.45 0.70 line regulation ? v out1 v in = 4 to 24 v, i out = 30 ma, v sense =? v det (typ.) + 2 v ? 15 50 mv load regulation ? v out2 v in = 5 v, i out = 50 a to 40 ma, v sense =? v det (typ.) + 2 v ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 5 v, i out = 30 ma, ta =? 40c to + 85c, v sense =? v det (typ.) + 2 v ? 0.23 0.92 mv /c output voltage during voltage detection v outoff v in =? v det (typ.) ? 1 v, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v 2 s-873082e ? 0.6 2.4 temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c s-873062e ? 0.5 2.0 mv /c detection voltage ? v det s-873082e 8.003 8.200 8.397 v s-873062e 6.051 6.200 6.349 sink current i dout v in = 1.3 v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4 v 1.50 2.60 ? v in = 3.6 v 3.00 4.50 ? leakage current i leak nch, v ds = 24 v, v in =? v det (typ.) + 2 v ? ? 0.1 a l sense s-873082e ? 0.6 1.7 7 sense pin input current v in = 5 v, v sense =? v det (typ.) + 2 v s-873062e ? 0.6 1.8 hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption i ss v in =? v det (typ.) + 2 v, unloaded ? 4 8 a 5 l of v in =? v det (typ.) ? 1 v, shutdown ? 1.5 3.5
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 21 12. s-873330e table 17 (unless otherwise specified: ta = 25c, connect the sense pin to the vin pin.) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 5.3 v, i out = 30 ma, v sense =? v det (typ.) + 2 v 3.220 3.300 3.380 v 1 i/o voltage difference v dif i out = 30 ma, v sense =? v det (typ.) + 2 v ? 0.45 0.70 line regulation ? v out1 v in = 4.3 to 24 v, i out = 30 ma, v sense =? v det (typ.) + 2 v ? 15 50 mv load regulation ? v out2 v in = 5.3 v, i out = 50 a to 40 ma, v sense =? v det (typ.) + 2 v ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 5.3 v, i out = 30 ma, ta =? 40c to + 85c, v sense =? v det (typ.) + 2 v ? 0.25 1.00 mv /c output voltage during voltage detection v outoff v in =? v det (typ.) ? 1 v, r l = 1 m ? ? ? 0.1 v 6 voltage detector operating voltage v opr ? 1.3 ? 24 v temperature characteristic of ? v det ta ? ? det ? ta =? 40c to + 85c ? 0.2 0.8 mv /c 2 detection voltage ? v det ? 2.928 3.000 3.072 v sink current i dout v in = 1.3 v 0.25 0.60 ? ma 4 nch, v ds = 0.5 v v in = 2.4 v 1.50 2.60 ? leakage current i leak nch, v ds = 24 v, v in =? v det (typ.) + 2 v ? ? 0.1 a sense pin input current l sense v in = 5.3 v, v sense =? v det (typ.) + 2 v ? 0.5 1.3 7 hysteresis width v hys ? ? v det 0.03 ? ? v det 0.08 v 2 input current current consumption i ss v in =? v det (typ.) + 2 v, unloaded ? 4 8 a 5 l of v in =? v det (typ.) ? 1 v, shutdown ? 1.5 3.5
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 22 13. s-875087f table 18 (unless otherwise specified: ta = 25c) item symbol condition min. typ. max. unit test circuit voltage regulator output voltage v out v in = 7 v, i out = 30 ma 4.88 5.00 5.12 v 1 i/o voltage difference v dif i out = 30 ma ? 0.15 0.40 line regulation ? v out1 v in = 6 to 24 v, i out = 30 ma ? 15 50 mv load regulation ? v out2 v in = 7 v, i out = 50 a to 40 ma ? 15 50 input voltage v in ? ? ? 24 v temperature coefficient of v out ta ? v ? out v in = 7 v, i out = 30 ma, ta =? 40c to + 85c ? 0.38 1.52 mv /c voltage detector operating voltage v opr ? 1.3 ? 24 v 2 delay time *1 t pd c d = 4.7 nf 15 27 41 ms 3 release voltage vs temperature ta ? v ? det + ta =? 40c to + 85c ? 0.7 2.8 mv /c 2 release voltage (overcharge detection voltage) + v det ? 8.600 8.700 8.800 v v in = 1.3 v 0.25 0.60 ? v in = 2.4 v 1.50 2.60 ? sink current i dout nch, v ds = 0.5 v v in = 3.6 v 3.00 4.50 ? ma 4 leakage current i leak nch, v ds = 24 v, v in = 15 v ? ? 0.1 a hysteresis width v hys ? 0.085 ? 0.215 v 2 input current current consumption *2 i ss v in = 7 v, unloaded ? 4 8 a 5 *1. t pd (ms) = (3.18min., 5.74typ., 8.73max.) c d (nf) *2. excluding the charging current of c d .
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 23 ? test circuits 1. c l vss vout a vin (sense) ) vpf ( v 2. v vss vout vin vor 100 k ? (sense) ) vpf ( figure 7 figure 8 3. vss vout vin vor cd 100 k ? c d 4. vss vout vin vor a v (sense) ) vpf ( figure 9 figure 10 5. vss vin a (sense) ) vpf ( 6. vss vout vin ) vpf ( r l = 1 m ? (sense) v figure 11 figure 12 7. vss vin a sense figure 13
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 24 ? operation timing charts 1. voltage regulator (c/g type) *2 *1 h l pf v [v] t [s] v ss v out [v] t [s] v ss v in [v] t 1 t [s] v ss *1 t 2 *1. indicates shutdown state. when the load current (i out ) is less than 1 a, the output voltage (v out ) is not always v ss level. *2. when the v out is shorted at t 1 , v out becomes v ss level. when the short of v out is removed at t 2 , v out returns to normal output. figure 14 2. voltage detector (a/b/f type) + v det ? v det t pd *1 t [s] v or [v] v in or v out [v] t [s] v hys t pd *1 t pd *1 *1. output delay time (t pd ) of the voltage detector can be changed with an external capacitance value to cd pin. delay circuit is not included in c/e/g type. remark pull up v or through a resistor to v in or v out . figure 15
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 25 3. when using the sense pin (e type) v out [v] t [s] + v det ? v det t [s] t [s] v or [v] v in = v sense *1 [v] *1. the sense pin is connected to vin pin. remark pull up v or through a resistor to v out . figure 16 ? technical terms 1. i/o voltage difference (v dif ) v dif = v in1 ? v out1 v out1 : initial output voltage v in1 : input voltage which generates an output voltage (v out2 ) decreased by 5 % from v out1 2. load regulation ( ? v out2 ) ? v out2 = v out1 ? v out2 v out1 : output voltage when i out is 50 a v out2 : output voltage when i out is 40 ma 3. line regulation ( ? v out1 ) ? v out1 = v out1 ? v out2 v out1 : output voltage when v in is 24 v v out2 : output voltage when v in is (v out + 1) v 4. hysteresis width (v hys ) v hys = ( + v det ) ? ( ? v det ) + v det : release voltage ? v det : detection voltage
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 26 ? operation 1. reference voltage circuit the reference voltage circuit operates all the time when the voltage is applied to vin pin and is not affected by the v pf signal. 2. voltage regulator figure 17 shows the voltage regulator circuit. the s-87x series has a pch mos transistor as the output control transistor. reverse current may break ic if v out potential is higher than v in , because a parasitic diode is formed between v in and v out due to the structure of the contro l transistor. therefore, keep v out lower than v in + 0.3 v. the output voltage of the voltage regulator can be selected as follows: 2.6 v to 5.8 v 2.4 % (0.1 v step) v ref v in + ? m1 v out r 1 r 2 *1 *1. parasitic diode figure 17 voltage regulator circuit caution for an application with a load current of less than 1 a, the leakage current of the control transistor m1 increases the output voltage. 3. short-circuit protection circuit the s-87x series has a built-in short-circuit protection circuit to protect the element from break caused by a large current in case of a short circuit. the output short current is internally limited to approx. 70 ma. short-circuit protection circuit has three kind s characteristics according to input voltage (v in ) as shown in figure 18 to 20 . at 5 v output: (a) v in /v out 2.0 (b) 1.5 v in /v out < 2.0 (c) v in /v out < 1.5 v out [v] i os i max i out [ma] v out [v] i os i out [ma] i out [ma] v out [v] i os figure 18 figure 19 figure 20
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 27 4. delay circuit the delay circuit outputs voltage detector output (v or ) with delay after the voltage at v in pin has become release voltage ( + v det ) at the rising of vin pin. in figure 21 , when v cd exceeds the reference voltage (v ref ), the output voltage pin detection voltage output (v or ) changes from low to high level, providing delay output. when the voltage at vin pin falls under the detection voltage ( ? v det ), the n2 transistor turns on, ther efore the charge of the external capacitor (c d ) is rapidly discharged and the voltage detector output (v or ) changes from high to low level without delay. the external capacitor (c d ) is charged with constant current, and is practically independent of v in voltage. its delay time (t pd ) is expressed by the following equation: t pd (ms) = delay coefficient (3.18 min., 5.74 typ., 8.73 max.) c d (nf) vor v cd c d n2 v ref + ? i c cd figure 21 caution 1. unless an output delay is needed , keep cd pin open. do not apply external voltage other than ground potential to cd pin, which may cause ic breakdown. 2. when designing your printed-circuit board layout, take care that no leakage current flows to the external capacitor (c d ), otherwise the correct delay time may not be obtained. because the value of the constant current source (i c ) is only 195 na, c d to impedance is high.
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 28 5. voltage detection circuit the built-in voltage detection circuit (nch opendrain type) is equivalent to our s-808 series/s-809 series voltage detectors. a pull-up resistor of about 100 k ? is required for output. since the comparator power of this circuit is supplied from vin pin, this ci rcuit operates while voltage is applied to vin pin. the detection voltage of the voltage detector can be selected as follows: 2.1 v to 11.3 v 2.4 % (0.1 v step) in the f type, the release voltage (+v det ) accuracy is 1.1 %. so, it responds to the application for overcharge detection of lithium-ion battery packs. in the e type, the input voltage monitoring pin of the voltage detector is externally connected as the sense pin. because this pin is configured by a resi stor only, temporary current such as a through-type current does not flow. consequently even when resistor (r in ) is inserted between input power supply and vin pin, the input power voltage can be accurately monitored by connecting the sense pin to the input power supply. also, when a drop in the sense pi n input voltage is detected, the voltage detector generates a reset signal. at the same time, it powers off the voltage regulator. caution 1. as shown in figure 22 to 24, when connecting v or output to v pf pin in the c type or connecting sense pin to vin pin in the e type, the following phenomena occur if resistor (r in ) is connected between input voltage and vin pin. be careful. (1) at the time of voltage detection, the voltage regulator is shutdown and load current is cut. therefore, vin pin voltage increases by ? v in = i in r in , where the current flowing into r in is set to i in . hence, if ? v in exceeds hysterisis width (v hys ), oscillation starts i mmediately after detection and continues. it is necessary to set ? v in less than v hys . (2) at the time of voltage release, the voltage regulator is powered on and load current flows. therefore, if ? v in exceeds hysterisis width (v hys ), oscillation starts immediately after release and continues. it is necessary to set ? v in less than v hys . also at the time of voltage release, the rush current to charge output capacitor (c out ) flows. hence, oscillation momentarily starts until the output of regulator (v out ) rises high enough even though ? v in is set less than v hys . but short-circuit protection circuit controls the rush current less than i max on figure 18 to 20. if this momentary oscillation is a problem in your applicaion, setting r in less than v hys /i max prevents oscillation. vss vor vin vpf vout i in r in r l c out s-87xxxxcup figure 22 attention connecting example 1
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 29 s-87xxxxeup vss vor vin sense vout i in r in r l c out figure 23 attention connecting example 2 a drop in v in due to rush current + v det power voltage ? v det v hys ? v in v in voltage v or figure 24 when ? v in > v hys 2. in the e type, the minimum operating voltage becomes 2.0 v as v in voltage. if a drop in v in voltage occurs due to load current or rush current to be charged to the output capacitor when load current or the voltage regulator is powered on at the time of release, set v in to 2.0 v or more. 3. also, in the e type, when sharply increasing only vin pin voltage at 1 ms/v or less, with the sense pin fixed to ? v det v sense ? v det ? 2 v, a release pulse is output to the output pin of voltage detector. be careful. in this case, this release pulse is removed by setting the time constant of vor pin 20 ms or more with capacitance and pull-up resistance. in addition, when the voltage of sense pin is fixed to between the detection voltage and the release voltage at the detect condition, if sharply increasing only vin pin voltage at 1 ms/v or less, the output of the detector turns to the release condition. if this action is a problem in your system, please connect sense pin to vin pin.
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 30 6. shutdown circuit (c/e/g type) when vpf pin goes low (0.4 v or less) in the c/g type or at the time of voltage detection in the e type current for the voltage regulator is shut down, the cu rrent consumption (excluding the current which flows through the pull-up resistor) lowers to 3.5 a or less. during shutdown, the m1 transistor in the voltage regulator shown in the figure 16 is off and vout pin is pulled down by r 1 and r 2 , whose value (r 1 + r 2 ) is 5 m ? to 10 m ? . input current of vpf pin is 0.1 a or less. caution 1. the output voltage may not become 0 v when the load which makes i out under 1 a is connected during shutdown. 2. do not keep v pf pin floating state or medium potential (between low and high levels). otherwise through-type current flows.
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 31 ? transient characteristics an undershoot or an overshoot may occur in the outpu t voltage of the voltage regulator if input voltage or load current fluctuates transiently. if an undershoot is large, the voltage detector operates to output reset signal in the b type in which the voltage detector detects the output voltage of the regulator. if an overshoot is large, the load circuit is adversely affected. therefor e it is important to determine the capacitor value so as to minimize undershoot and overshoot. 1. line: transient characteristics due to input voltage fluctuation input voltage fluctuation differs depending on the types of the signal applied: type 1 which is a rectangular wave between (v out + 1) v and 10 v, and type 2 which is a rectangular wave from 0 v to 10 v. (refer to figure 25 to 26 ) the ringing waveforms and parameter dependency of each type are described below. the measuring circuit is shown in figure 27 for reference. input voltage output voltage deviation overshoot undershoot 10 v (v out + 1) v figure 25 rectangular wave between (v out + 1) v and 10 v (type 1) input voltage output voltage deviation 0 v 10 v undershoot overshoot remark rise/fall time (time between 10 % and 90 %) is 1 s. figure 26 rectangular wave from 0 v to 10 v (type 2) vss s-87x series fast amplifier p.g. vout vin r o c l *1 oscilloscope 10:1 probe + ? *1. al electrolytic capacitor figure 27 measuring circuit
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 32 type 1 (rectangle wave between (v out + 1) v and 10 v) 10 v i out = 40 ma, c l = 10 f, ta = 25 c 5 ms/div output voltage [200 mv/div] input voltage [1 v/div] (v out + 1) v overshoot amount: 350 mv undershoot amount: 325 mv figure 28 ringing waveform (type 1) table 19 parameter dependency (type 1) series parameter conditions method to decrease overshoot method to decrease undershoot s-8750xxx load current (i out ) 10 to 60 ma, c l = 10 f decrease decrease load capacitance (c l ) 1 to 47 f, i out = 40 ma increase increase input fluctuation ( ? v in *1 ) 2 to 4 v decrease decrease 4 to 18 v increase decrease temperature (ta) ? 40 c to + 85 c low temperature low temperature s-8730xxx load current (i out ) 10 to 60 ma, c l = 10 f increase decrease load capacitance (c l ) 1 to 47 f, i out = 40 ma increase increase input fluctuation ( ? v in *1 ) 4 to 20 v increase decrease temperature (ta) ? 40 c to + 85 c low temperature low temperature *1. high voltage value ? low voltage value for reference, the following pages describe the ringing in v out measured using the output load current (i out ), output load capacitance (c l ), input fluctuation width ( ? v in ), and temperature (ta) as parameters.
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 33 reference data: type 1 s-8750xxx series 1. i out dependency 2. c l dependency ringing amount [mv] 500 400 300 200 100 0 0 10 20 30 40 50 60 70 c l = 10 f, ta = 25 c i out [ma] ringing amount [mv] 1600 1400 1200 1000 800 0 0 10 20 30 40 50 c l [ f] 600 400 200 i out = 40 ma, ta = 25 c 3. ? v in dependency 4. temperature dependency ? v in [v] ringing amount [mv] 500 400 300 200 100 0 0 5 10 15 20 i out = 40 ma, c l = 10 f, ta = 25 c remark the lower voltage is fixed at 6 v. overshoot undershoot ta [ c] ringing amount [mv] 500 400 300 200 100 0 ? 40 ? 20 0 20 40 60 80 100 i out = 40 ma, c l = 10 f s-8730xxx series 1. i out dependency 2. c l dependency ringing amount [mv] 500 400 300 200 100 0 0 10 20 30 40 50 60 70 c l = 10 f, ta = 25 c i out [ma] 600 ringing amount [mv] 1600 1400 1200 1000 800 0 0 10 20 30 40 50 c l [ f] 600 400 i out = 40 ma, ta = 25c 200 3. ? v in dependency 4. temperature dependency ? v in [v] ringing amount [mv] 500 400 300 200 100 0 0 5 10 15 25 i out = 40 ma, c l = 10 f, ta = 25 c 20 remark the lower voltage is fixed at 4 v. overshoot undershoot ta [ c] ringing amount [mv] 500 400 300 200 100 0 ? 40 ? 20 0 20 40 60 80 100 i out = 40 ma, c l = 10 f
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 34 type 2 (rectangle wave form 0 v to 10 v) 10 v i out = 40 ma, c l = 10 f, ta = 25 c 0 v 5 ms/div output voltage [500 mv/div] input voltage [5 v/div] overshoot amount: 1300 mv undershoot amount: 610 mv figure 29 ringing waveform (type 2) table 20 parameter dependency (type 2) series parameter conditions method to decrease overshoot method to decrease undershoot s-8750xxx load current (i out ) 10 to 60 ma, c l = 10 f increase increase load capacitance (c l ) 1 to 47 f, i out = 40 ma decrease decrease input fluctuation ( ? v in *1 ) 8 to 24 v increase increase temperature (ta) ? 40 c to + 85 c low temperature low temperature s-8730xxx load current (i out ) 10 to 60 ma, c l = 10 f increase increase load capacitance (c l ) 1 to 47 f, i out = 40 ma decrease decrease input fluctuation ( ? v in *1 ) 8 to 24 v increase increase temperature (ta) ? 40 c to + 85 c low temperature low temperature *1. high voltage value ? 0 v for reference, the following pages describe the ringing in v out measured using the output load current (i out ), output load capacitance (c l ), input fluctuation width ( ? v in ), and temperature (ta) as parameters.
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 35 reference data: type 2 s-8750xxx series 1. i out dependency 2. c l dependency ringing amount [mv] 200 150 100 50 0 0 10 20 30 40 50 60 70 c l = 10 = 25 c i out [ma] ringing amount [mv] 200 150 100 50 0 0 10 20 30 40 50 c l [ f] i out = 40 ma, ta = 25 c 3. ? v in dependency 4. temperature dependency ? v in [v] ringing amount [mv] 300 200 150 100 50 0 5 10 15 20 25 250 i out = 40 ma, c l = 10 f, ta = 25 c remark the lower voltage is fixed at 0 v. overshoot undershoot ta [ c] ringing amount [mv] 250 200 150 100 50 0 ? 40 ? 20 0 20 40 60 80 100 i out = 40 ma, c l = 47 f s-8730xxxseries 1. i out dependency 2. c l dependency ringing amount [mv] i out [ma] 140 60 40 20 0 0 10 20 30 40 50 60 70 c l = 10 = 25 c 80 100 120 ringing amount [mv] 120 0 0 10 20 30 40 50 c l [ f] 80 60 40 20 100 i out = 40 ma, ta = 25 c 3. ? v in dependency 4. temperature dependency ? v in [v] ringing amount [mv] 0 0 5 10 15 20 25 140 60 40 20 80 100 120 i out = 40 ma, c l = 10 f, ta = 25 c remark the lower voltage is fixed at 0 v. undershoot overshoot ta [ c] ringing amount [mv] 0 ? 40 ? 20 0 20 40 60 80 100 140 60 40 80 100 120 20 i out = 40 ma, c l = 10 f
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 36 2. load transient response characteristics due to load current fluctuation an overshoot and an undershoot are caused in the out put voltage if the load current is changed from 50 a to 40 ma while the input voltage is kept constant. figure 30 shows the output voltage fluctuation due to a change in the load current. the measuring circuit is shown in figure 31 for reference. the latter half of this section describes ringing waveform and parameter dependency. overshoot load current output voltage deviation undershoot 40 ma 50 figure 30 output voltage fluctuation due to a change in the load current vss vout vin oscilloscope 10:1 probe r 0 *2 r 1 *1 power supply s-87x series c l *3 + ? 10 + ? *1. r 1 = a 50 ] v [ v out [ ? ] *2. r 0 = ma 40 ] v [ v out [ ? ] *3. al electrolytic capacitor figure 31 measuring circuit table 21 parameter dependency due to load current fluctuation series parameter conditions method to decrease overshoot method to decrease undershoot load current (i out ) 10 to 60 ma, c l = 10 f decrease decrease s-8750xxx, s-8730xxx load capacitance (c l ) 1 to 47 f, i out = 40 ma increase increase power supply voltage (v in ) (v out + 1) to 24 v incr ease increase temperature (ta) ? 40 c to + 85 c low temperature low temperature
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 37 ? reference data s-8750xxxseries 1. i out dependency 2. c l dependency ringing amount [mv] i out [ma] 350 150 100 50 0 0 10 20 30 40 50 60 70 200 250 300 c l = 10 = 25 c, v in = 10 v remark the lower current is fixed at 50 a. ringing amount [mv] 800 0 0 10 20 30 40 50 c l [ f] 700 600 500 400 300 200 100 v in = 10 v, ta = 25 c 3. ? v in dependency 4. temperature dependency v in [v] ringing amount [mv] 0 0 5 10 15 20 25 300 250 200 150 100 50 c l = 10 f, ta = 25 c overshoot undershoot ta [ c] ringing amount [mv] 0 ? 40 ? 20 0 20 40 60 80 100 c l = 10 f, v in = 10 v 300 250 200 150 100 50 s-8730xxxseries 1. i out dependency 2. c l dependency ringing amount [mv] i out [ma] 0 0 10 20 30 40 50 60 70 300 250 200 150 100 50 c l = 10 f, ta = 25 c, v in = 10 v remark the lower current is fixed at 50 a. ringing amount [mv] 0 0 c l [ f] 700 300 200 100 400 500 600 10 20 30 40 50 v in = 10 v, ta = 25 c 3. ? v in dependency 4. temperature dependency v in [v] ringing amount [mv] 0 0 5 10 15 20 25 300 250 200 150 100 50 c l = 10 f, ta = 25 c overshoot undershoot ta [ c] ringing amount [mv] 0 ? 40 ? 20 0 20 40 60 80 100 c l = 10 f, v in = 10 v 300 250 200 150 100 50
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 38 ? standard circuits 1. a/b/f type vin vss vout vor cd c i r l c l v out v or + ? + ? 10 figure 32 2. c/g type vin vss vout vor c i r l c l v out v or vpf + ? + ? 10 figure 33 3. e type vin vss vout vor c i r l c l v out v or sense + ? + ? 10 figure 34 caution the above connection diagram and constants do not guarantee correct operation. perform sufficient evaluation using the actual application to set the constants.
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 39 ? application circuits 1. microcomputer power supply and reset circuit to construct a microcomputer power supply and a reset circuit using conventional ics, a voltage regulator ic, a voltage detector ic, a delay time generation circ uit and others are required. the a/b type allows you to make these circuits without these ics, and the delay time is variable. c d 100 k ? cd vor vin v ss vout reset cpu v out figure 35 caution the above connection diagram and constants do not guarantee correct operation. perform sufficient evaluation using the actual application to set the constants. 2. output current boost circuit a pnp transistor is used to increase the output current. 1. a/ b type v ss v or v out v in vor cd vin vss vout figure 36
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 40 2. c/ g type v ss v or v out v in vor vin vss vout vpf figure 37 caution the above connection diagram and constants do not guarantee correct operation. perform sufficient evaluation using the actual application to set the constants. 3. power supply for lithium-ion battery pack when the lithium-ion battery goes down to the over discharge voltage, the built-in voltage detector powers off the voltage regulator, and at the same time it transmits the reset signal to the microcomputer. r 1 , c 1 , r 2 and c 2 are attached to eliminate the voltage exceeding the absolute maximum ratings of charger. c 3 is attached to give a delay and to release the reset signal after power supply voltage for microcomputer (v out ) rises high enough. sense vor vin vss vout s-87xxxxe series reset micro-computer 10 f r 3 100 k ? c 3 c 2 0.1 f c 1 0.1 f r 2 330 ? li r 1 330 ? charger figure 38 caution the above connection diagram and constants do not guarantee correct operation. perform sufficient evaluation using the actual application to set the constants.
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 41 ? power dissipation of the package use a voltage regulator under the specif ied power dissipation of the package. power dissipation (p d ) [w] 0.8 0.4 0 50 100 150 1.0 0.6 0.2 glass epoxy board (1.7 mm thick) v out copper foiled area:1 cm 2 unassembled case 0 1.2 ambient temperature (ta) [ c] figure 39 ? precautions ? do not apply a ripple voltage of the following both conditions to vin pin. t (cycle) *1 v pp *2 v [v] t [s] *1. f 1000 hz (f = t 1 ) (?f? shows the frequency) *2. v pp 0.5 v figure 40 ? when connecting another power supply to the voltage re gulator output pin, insert a diode to protect the ic. vss vin vout v/r ou t figure 41 ? do not apply an electrostatic discharge to this ic that exceeds the performance ratings of the built-in electrostatic protection circuit.
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 42 ? typical characteristics 1. voltage regulator (1) output voltage (v out ) - temperature (ta) characteristics s-8750xxx series s-8730xxx series 5.10 5.05 5.00 4.95 ? 50 ? 25 0 25 50 75 100 ta [ c] v out [v] 4.90 3.10 3.05 3.00 2.95 2.90 ? 50 ? 25 0 25 50 75 100 ta [ c] v out [v] (2) line regulation( ? v out1 ) - temperature (ta) characteristics s-8750xxx series s-8730xxx series 20 15 10 5 ? 50 ? 25 0 25 50 75 100 ta [ c] ? v out1 [mv] 0 20 15 10 5 ? 50 ? 25 0 25 50 75 100 ta [ c] ? v out1 [mv] 0 (3) input voltage (v in ) - output voltage (v out ) characteristics s-8750xxx series s-8730xxx series 5.8 4.0 4.5 6.5 v in [v] v out [v] 1 ma 10 ma 20 ma 30 ma 40 ma 50 ma i out = 50 a 5.0 5.5 3.8 2.0 2.5 4.5 v in [v] 1 ma 10 ma 20 ma 30 ma 40 ma 50 ma v out [v] 3.5 3.0 i out = 50
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 43 (4) load regulation( ? v out2 ) - temperature (ta) characteristics s-8750xxx series s-8730xxx series 20 15 10 5 ? 50 ? 25 0 25 50 75 100 ta [ c] 0 ? v out2 [mv] ? 50 ? 25 0 25 50 75 100 ta [ c] 20 15 10 5 0 ? v out2 (mv) (5) i/o voltage difference (v dif ) - temperature (ta) characteristics s-8750xxx series s-8730xxx series 250 200 150 100 ? 50 ? 25 0 25 50 75 100 ta [ c] 0 50 v dif [mv] ? 50 ? 25 0 25 50 75 100 ta [ c] 700 600 500 400 300 200 100 0 v dif [mv] (6) short-circuit protection circuit characteristics s-8750xxx series (ta = 25 c) 6.00 0 30 60 90 120 150 180 i out [ma] v out [v] 5.00 4.00 3.00 2.00 1.00 0.00 v in = 24 v 6.00 0 30 60 90 120 150 180 v out [v] 5.00 4.00 3.00 2.00 1.00 0.00 v in = 10 v 210 240 i out [ma] 6.00 0 30 60 90 120 150 180 v out [v] 5.00 4.00 3.00 2.00 1.00 0.00 v in = 8 v 210 240 270 300 i out [ma] 6.00 0 30 60 90 120 150 180 v out [v] 5.00 4.00 3.00 2.00 1.00 0.00 v in = 6 v 210 240 i out [ma]
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 44 s-8730xxx series (ta = 25 c) s-8730xxx series 4.00 3.00 2.00 1.00 0 30 60 90 120 150 180 i out [ma] v out [v] 0.00 v in = 24 v 4.00 3.00 2.00 1.00 0 30 60 90 120 150 180 i out [ma] v out [v] 0.00 v in = 8 v 210 4.00 3.00 2.00 1.00 0 i out [ma] v out [v] 0.00 v in = 6 v 30 60 90 120 150 180 210 240 4.00 3.00 2.00 1.00 0 30 60 90 120 150 i out [ma] v out [v] 0.00 v in = 4 v (7) ripple rejection characteristics s-8750xxx series ? 10 ? 60 10 gain [db] f [hz] 100 1k 10k 100k ? 20 ? 30 ? 40 ? 50 v in = 7 v i out = 40 ma c l = 10 f s-8730xxx series ? 10 ? 60 10 gain [db] f [hz] 100 1k 10k 100k ? 20 ? 30 ? 40 ? 50 v in = 5 v i out = 40 ma c l = 10 f
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 45 2. voltage detector (1) detection voltage (v det ) - temperature (ta) characteristics s-875045 s-875043 20 10 0 ? 10 ? 50 ? 25 0 25 50 75 100 ta [ c] ? v det [mv] ? 20 20 10 0 ? 10 ? 20 ? 50 ? 25 0 25 50 75 100 ta [ c] ? v det [mv] s-873023 ? 50 ? 25 0 25 50 75 100 ta [ c] 20 10 0 ? 10 ? v det [mv] ? 20 (2) hysteresis width (v hys ) - temperature (ta) characteristics s-875045 s-875043 2.5 2 1.5 ? 50 ? 25 0 25 50 75 100 ta [ c] v hys [%] 1 8 ? 50 ? 25 0 25 50 75 100 ta [ c] 7 6 5 4 3 v hys [%] s-873023 8 ? 50 ? 25 0 25 50 75 100 ta [ c] 7 6 5 4 3 v hys [%]
high withstand-voltage voltage regulator with reset function s-87x series rev.6.2 _00 seiko instruments inc. 46 (3) nch transistor output current (i dout ) characteristics v ds [v] 0 0.0 2.0 ta = 25 c 15 i dout [ma] v in = 3.6 v v in = 2.4 v v in = 1.3 v 1.0 5 10 (4) delay time (t pd ) characteristics delay time (t pd ) - temperature (ta) 50 ? 50 ? 25 0 25 50 75 100 ta [ c] 30 40 20 10 0 v in = 10 v c d = 4.7 nf t pd [ms] 3. total (1) current consumption (iss) characteristics (a) input voltage(v in ) characteristics s-8750xxc series s-8730xxc series v in [v] 0 0 25 5 i ss [ a] ta = 25 c 1 2 3 4 5 10 15 20 v in [v] i ss [ a] ta = 25 c 0 0 25 5 1 2 3 4 5 10 15 20 (b) current consumption (iss) - temperature (ta) characteristics s-8750xxc series s-8730xxc series 10 7.5 5 2.5 ? 50 ? 25 0 25 50 75 100 ta [ c] i ss [ a] 0 v in = 7 v 10 7.5 5 2.5 ? 50 ? 25 0 25 50 75 100 ta [ c] i ss [ a] 0 v in = 5 v
high withstand-voltage voltage regulator with reset function rev.6.2 _00 s-87x series seiko instruments inc. 47 (2) input voltage of shutdown circuit characteristics (a) high level input voltage (v ih ) - temperature (ta) characteristics (b) low level input voltage (v il ) - temperature (ta) characteristics 2 1.5 1 0.5 ? 50 ? 25 0 25 50 75 100 ta [ c] v ih [v] 0 v in = 6 v 1 0.75 0.5 0.25 ? 50 ? 25 0 25 50 75 100 ta [ c] v il [v] 0 v in = 6 v (c) v ih , v il - power supply voltage dependency characteristics v in [v] 0.0 0 24 3.0 v ih , v il [v] ta = 25 c 12 0.6 1.2 1.8 2.4 v ih v il

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the information described herein is subject to change without notice. seiko instruments inc. is not responsible for any problems caused by circuits or diagrams described herein whose related industrial properties, patents, or other rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design. when the products described herein are regulated products subject to the wassenaar arrangement or other agreements, they may not be exported without authorization from the appropriate governmental authority. use of the information described herein for other purposes and/or reproduction or copying without the express permission of seiko instruments inc. is strictly prohibited. the products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may occur. the user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.

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