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december 2006 rev. 20 1/38 38 ld1117 series low drop fixed and adjustable positive voltage regulators feature summary low dropout voltage (1v typ.) 2.85v device performances are suitable for scsi-2 active termination output current up to 800 ma fixed output voltage of: 1.2v, 1.8v, 2.5v, 2.85v, 3.0v, 3.3v, 5.0v adjustable version availability (v rel =1.25v) internal current and thermal limit available in 1% (at 25c) and 2% in full temperature range supply voltage rejection: 75db (typ.) description the ld1117 is a low drop voltage regulator able to provide up to 800ma of output current, available even in adjustable version (vref=1.25v). concerning fixed versions, are offered the following output voltages: 1.2v,1.8v,2.5v,2.85v, 3.0v 3.3v and 5.0v. the 2.85v type is ideal for scsi-2 lines active termination. the device is supplied in: sot-223, dpak, so-8 and to-220. the sot-223 and dpak surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. high efficiency is assured by npn pass transistor. in fact in this case, unlike than pnp one, the quiescent current flows mostly into the load. only a very common 10f minimum capacitor is needed for stability. on chip trimming allows the regulator to reach a very tight output voltage tolerance, within 1% at 25c. the adjustable ld1117 is pin to pin compatible with the other standard. adjustable voltage regulators maintaining the better performances in terms of drop and tolerance. dpak so-8 to-220 sot-223 www.st.com block diagram
ld1117 series 2/38 contents 1 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6 ld1117 adjustable: application note . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 8 order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 9 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
ld1117 series pin configuration 3/38 1 pin configuration note: the tab is connected to the v out . figure 1. pin connections (top view) so-8 to-220 sot-223 dpak
maximum ratings ld1117 series 4/38 2 maximum ratings table 1. absolute maximum ratings symbol parameter value unit v in dc input voltage 15 v p tot power dissipation 12 w t stg storage temperature range -40 to +150 c t op operating junction temperature range for c version -40 to +150 c for standard version 0 to +150 c table 2. thermal data symbol parameter sot-223 so-8 dpak to-220 unit r thjc thermal resistance junction-case 15 20 8 3 c/w r thja thermal resistance junction-ambient 50 c/w
ld1117 series schematic application 5/38 3 schematic application figure 2. application circuit (for 1.2v) figure 3. application circuit (for other fixed output voltages)
electrical characteristics ld1117 series 6/38 4 electrical characteristics table 3. electrical characteristics of ld1117#12 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, r = 120 ? between gnd and out pins, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 3.2 v, i o = 10 ma, t j = 25c 1.188 1.20 1.212 v v o reference voltage i o = 10 to 800 ma v in - v o = 1.4 to 10 v 1.140 1.20 1.260 v ? v o line regulation v in - v o = 1.5 to 13.75 v, i o = 10 ma 0.035 0.2 % ? v o load regulation v in - v o = 3 v, i o = 10 to 800 ma 0.1 0.4 % ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage 15 v i adj adjustment pin current v in 15 v 60 120 a ? i adj adjustment pin current change v in - v o = 1.4 to 10 v i o = 10 to 800 ma 15a i o(min) minimum load current v in = 15 v 2 5 ma i o output current v in - v o = 5 v, t j = 25c 800 950 1300 ma en output noise (%v o ) b =10hz to 10khz, t j = 25c 0.003 % svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in - v o = 3 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 7/38 table 4. electrical characteristics of ld1117#18 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 3.8 v, i o = 10 ma, t j = 25c 1.78 1.8 1.82 v v o output voltage i o = 0 to 800 ma, v in = 3.3 to 8 v 1.76 1.84 v ? v o line regulation v in = 3.3 to 8 v, i o = 0 ma 1 6 mv ? v o load regulation v in = 3.3 v, i o = 0 to 800 ma 1 10 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 10 v i d quiescent current v in 8 v 5 10 ma i o output current v in = 6.8 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 5.5 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w table 5. electrical characteristics of ld1117#25 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 4.5 v, i o = 10 ma, t j = 25c 2.475 2.5 2.525 v v o output voltage i o = 0 to 800 ma, v in = 3.9 to 10 v 2.45 2.55 v ? v o line regulation v in = 3.9 to 10 v, i o = 0 ma 1 6 mv ? v o load regulation v in = 3.9 v, i o = 0 to 800 ma 1 10 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 10 v 5 10 ma i o output current v in = 7.5 vt j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 5.5 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
electrical characteristics ld1117 series 8/38 table 6. electrical characteristics of ld1117#28 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 4.85 v, i o = 10 ma, t j = 25c 2.82 2.85 2.88 v v o output voltage i o = 0 to 800 ma, v in = 4.25 to 10 v 2.79 2.91 v ? v o line regulation v in = 4.25 to 10 v, i o = 0 ma 1 6 mv ? v o load regulation v in = 4.25 v, i o = 0 to 800 ma 1 10 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 10 v 5 10 ma i o output current v in = 7.85 vt j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 5.85 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 9/38 table 7. electrical characteristics of ld1117#30 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 5 v, i o = 10 ma, t j = 25c 2.97 3 3.03 v v o output voltage i o = 0 to 800 ma, v in = 4.5 to 10 v 2.94 3.06 v ? v o line regulation v in = 4.5 to 12 v, i o = 0 ma 1 6 mv ? v o load regulation v in = 4.5 v, i o = 0 to 800 ma 1 10 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 12 v 5 10 ma i o output current v in = 8 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz,t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 6 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
electrical characteristics ld1117 series 10/38 table 8. electrical characteristics of ld1117#33 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 5.3 v, i o = 10 ma, t j = 25c 3.267 3.3 3.333 v v o output voltage i o = 0 to 800 ma, v in = 4.75 to 10 v 3.235 3.365 v ? v o line regulation v in = 4.75 to 15 v, i o = 0 ma 1 6 mv ? v o load regulation v in = 4.75 v, i o = 0 to 800 ma 1 10 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 15 v 5 10 ma i o output current v in = 8.3 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 6.3 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 11/38 table 9. electrical characteristics of ld1117#50 (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 7 v, i o = 10 ma, t j = 25c 4.95 5 5.05 v v o output voltage i o = 0 to 800 ma, v in = 6.5 to 15 v 4.9 5.1 v ? v o line regulation v in = 6.5 to 15 v, i o = 0 ma 1 10 mv ? v o load regulation v in = 6.5 v, i o = 0 to 800 ma 1 15 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 15 v 5 10 ma i o output current v in = 10 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 8 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
electrical characteristics ld1117 series 12/38 table 10. electrical characteristics of ld1117 (adjustable) (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v ref reference voltage v in - v o = 2 v, i o = 10 ma, t j = 25c 1.238 1.25 1.262 v v ref reference voltage i o = 10 to 800 ma, v in - v o = 1.4 to 10 v 1.225 1.275 v ? v o line regulation v in - v o = 1.5 to 13.75 v, i o = 10 ma 0.035 0.2 % ? v o load regulation v in - v o = 3 v, i o = 10 to 800 ma 0.1 0.4 % ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage 15 v i adj adjustment pin current v in 15 v 60 120 a ? i adj adjustment pin current change v in - v o = 1.4 to 10 v, i o = 10 to 800 ma 1 5 a i o(min) minimum load current v in = 15 v 2 5 ma i o output current v in - v o = 5 v, t j = 25c 800 950 1300 ma en output noise (%v o ) b =10hz to 10khz, t j = 25c 0.003 % svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in - v o = 3 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma 1 1.1 v i o = 500 ma 1.05 1.15 i o = 800 ma 1.10 1.2 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 13/38 table 11. electrical characteristics of ld1117#12c (refer to the test circuits, t j = 0 to 125 c, c o = 10 f, r = 120 ? between gnd and out pins, unless otherwise specified). symbol parameter test min. typ. max. unit v ref reference voltage v in - v o = 2v, i o = 10 ma, t j = 25c 1.176 1.20 1.224 v v ref reference voltage i o = 10 to 800 ma, v in - v o = 1.4 to 10 v 1.120 1.20 1.280 v ? v o line regulation v in - v o = 1.5 to 13.75 v, i o = 10 ma 1 % ? v o load regulation v in - v o = 3 v, i o = 10 to 800 ma 1 % ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage 15 v i adj adjustment pin current v in 15 v 60 120 a ? i adj adjustment pin current change v in - v o = 1.4 to 10 v i o = 10 to 800 ma 15a i o(min) minimum load current v in = 15 v 2 5 ma i o output current v in - v o = 5 v, t j = 25c 800 950 1300 ma en output noise (%v o ) b =10hz to 10khz, t j = 25c 0.003 % svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in - v o = 3 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.2 i o = 800 ma, t j = 0 to 125c 1.10 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
electrical characteristics ld1117 series 14/38 table 12. electrical characteristics of ld1117#18c (refer to the test circuits, t j = -40 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 3.8 v, i o = 10 ma, t j = 25c 1.76 1.8 1.84 v v o output voltage i o = 0 to 800 ma, v in = 3.9 to 10 v 1.73 1.87 v ? v o line regulation v in = 3.3 to 8 v, i o = 0 ma 1 30 mv ? v o load regulation v in = 3.3 v, i o = 0 to 800 ma 1 30 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 10 v i d quiescent current v in 8 v 5 10 ma i o output current v in = 6.8 vt j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 5.5 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.15 i o = 800 ma, t j = 0 to 125c 1.10 1.2 v d dropout voltage i o = 100 ma 1.1 v i o = 500 ma 1.2 i o = 800 ma 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 15/38 table 13. electrical characteristics of ld1117#25c (refer to the test circuits, t j = -40 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 4.5 v, i o = 10 ma, t j = 25c 2.45 2.5 2.55 v v o output voltage i o = 0 to 800 ma, v in = 3.9 to 10 v 2.4 2.6 v ? v o line regulation v in = 3.9 to 10 v, i o = 0 ma 1 30 mv ? v o load regulation v in = 3.9 v, i o = 0 to 800 ma 1 30 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 10 v 5 10 ma i o output current v in = 7.5 vt j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 5.5 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.15 i o = 800 ma, t j = 0 to 125c 1.10 1.2 v d dropout voltage i o = 100 ma 1.1 v i o = 500 ma 1.2 i o = 800 ma 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
electrical characteristics ld1117 series 16/38 table 14. electrical characteristics of ld1117#30c (refer to the test circuits, t j = -40 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 5 v, i o = 10 ma, t j = 25c 2.94 3 3.06 v v o output voltage i o = 0 to 800 ma, v in = 4.5 to 10 v 2.88 3.12 v ? v o line regulation v in = 4.5 to 12 v, i o = 0 ma 1 30 mv ? v o load regulation v in = 4.5 v, i o = 0 to 800 ma 1 30 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 12 v 5 10 ma i o output current v in = 8 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 6 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.15 i o = 800 ma, t j = 0 to 125c 1.10 1.2 v d dropout voltage i o = 100 ma 1.1 v i o = 500 ma 1.2 i o = 800 ma 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 17/38 table 15. electrical characteristics of ld1117#33c (refer to the test circuits, t j = -40 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 5.3 v, i o = 10 ma, t j = 25c 3.24 3.3 3.36 v v o output voltage i o = 0 to 800 ma, v in = 4.75 to 10 v 3.16 3.44 v ? v o line regulation v in = 4.75 to 15 v, i o = 0 ma 1 30 mv ? v o load regulation v in = 4.75 v, i o = 0 to 800 ma 1 30 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 15 v 5 10 ma i o output current v in = 8.3 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 6.3 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.15 i o = 800 ma, t j = 0 to 125c 1.10 1.2 v d dropout voltage i o = 100 ma 1.1 v i o = 500 ma 1.2 i o = 800 ma 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
electrical characteristics ld1117 series 18/38 table 16. electrical characteristics of ld1117#50c (refer to the test circuits, t j = -40 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v o output voltage v in = 7 v, i o = 10 ma, t j = 25c 4.9 5 5.1 v v o output voltage i o = 0 to 800 ma, v in = 6.5 to 15 v 4.8 5.2 v ? v o line regulation v in = 6.5 to 15 v, i o = 0 ma 1 50 mv ? v o load regulation v in = 6.5 v, i o = 0 to 800 ma 1 50 mv ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage i o = 100 ma 15 v i d quiescent current v in 15 v 5 10 ma i o output current v in = 10 v, t j = 25c 800 950 1300 ma en output noise voltage b =10hz to 10khz, t j = 25c 100 v svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in = 8 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.15 i o = 800 ma, t j = 0 to 125c 1.10 1.2 v d dropout voltage i o = 100 ma 1.1 v i o = 500 ma 1.2 i o = 800 ma 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
ld1117 series electrical characteristics 19/38 table 17. electrical characteristics of ld1117c (adjustable) (refer to the test circuits, t j = -40 to 125 c, c o = 10 f, unless otherwise specified). symbol parameter test min. typ. max. unit v ref reference voltage v in - v o = 2 v, i o = 10 ma, t j = 25c 1.225 1.25 1.275 v v ref reference voltage i o = 10 to 800 ma, v in - v o = 1.4 to 10 v 1.2 1.3 v ? v o line regulation v in - v o = 1.5 to 13.75 v, i o = 10 ma 1 % ? v o load regulation v in - v o = 3 v, i o = 10 to 800 ma 1 % ? v o temperature stability 0.5 % ? v o long term stability 1000 hrs, t j = 125c 0.3 % v in operating input voltage 15 v i adj adjustment pin current v in 15 v 60 120 a ? i adj adjustment pin current change v in - v o = 1.4 to 10 v, i o = 10 to 800 ma 1 10 a i o(min) minimum load current v in = 15 v 2 5 ma i o output current v in - v o = 5 v, t j = 25c 800 950 1300 ma en output noise (%v o ) b =10hz to 10khz, t j = 25c 0.003 % svr supply voltage rejection i o = 40 ma, f = 120hz, t j = 25c v in - v o = 3 v, v ripple = 1 v pp 60 75 db v d dropout voltage i o = 100 ma, t j = 0 to 125c 1 1.1 v i o = 500 ma, t j = 0 to 125c 1.05 1.15 i o = 800 ma, t j = 0 to 125c 1.10 1.2 v d dropout voltage i o = 100 ma 1.1 v i o = 500 ma 1.2 i o = 800 ma 1.3 thermal regulation t a = 25c, 30ms pulse 0.01 0.1 %/w
typical application ld1117 series 20/38 5 typical application figure 4. negative supply figure 5. active terminator for scsi-2 bus figure 6. circuit for increasing output voltage
ld1117 series typical application 21/38 figure 7. voltage regulator with reference figure 8. battery backed-up regulated supply
typical application ld1117 series 22/38 figure 9. post-regulated dual supply
ld1117 series ld1117 adjustable: application note 23/38 6 ld1117 adjustable: application note the ld1117 adjustable has a thermal stabilized 1.250.012v reference voltage between the out and adj pins. i adj is 60a typ. (120a max.) and ? i adj is 1a typ. (5a max.). r1 is normally fixed to 120w. from figure 10 we obtain: v out = v ref + r2 (i adj +i r1 ) = v ref + r2 (i adj +v ref /r 1 ) = v ref (1 + r2 / r 1 ) + r2 x i adj . in normal application r2 value is in the range of few kohm, so the r2 x i adj product could not be considered in the v out calculation; then the above expression becomes: v out = v ref (1 + r2 / r1). in order to have the better load regulation it is important to realize a good kelvin connection of r1 and r2 resistors. in particular r1 connection must be realized very close to out and adj pin, while r2 ground connection must be placed as near as possible to the negative load pin. ripple rejection can be improved by introducing a 10f electrolytic capacitor placed in parallel to the r2 resistor (see fig. 11). figure 10. adjustable output voltage application figure 11. adjustable output voltage appli cation with improved ripple rejection
package mechanical data ld1117 series 24/38 7 package mechanical data in order to meet environmental requirements, st offers these devices in ecopack ? packages. these packages have a lead-free second level interconnect. the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com.
ld1117 series package mechanical data 25/38 dim. mm. mils min. typ max. min. typ. max. a 1.8 70. 9 a1 0.02 0.1 0.8 3. 9 b 0.6 0.7 0.85 23.6 27.6 33.5 b1 2. 9 3 3.15 114.2 118.1 124.0 c 0.24 0.26 0.35 9 .4 10.2 13.8 d 6.3 6.5 6.7 248.0 255. 9 263.8 e2.3 9 0.6 e1 4.6 181.1 e 3.3 3.5 3.7 12 9 . 9 137.8 145.7 h 6.7 7 7.3 263.8 275.7 287.5 v 10 10 sot-223 mechanical data 0046067/h
package mechanical data ld1117 series 26/38 dim. mm. inch min. typ max. min. typ. max. a 1.35 1.75 0.053 0.069 a1 0.10 0.25 0.04 0.010 a2 1.10 1.65 0.043 0.065 b 0.33 0.51 0.013 0.020 c 0.19 0.25 0.007 0.010 d 4.80 5.00 0.189 0.197 e 3.80 4.00 0.150 0.157 e 1.27 0.050 h 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 k ? (max.) ddd 0.1 0.04 so-8 mechanical data 0016023/c 8
ld1117 series package mechanical data 27/38 figure 12. drawing dimension dpak (type std-st) 0068772/g
package mechanical data ld1117 series 28/38 figure 13. drawing dimension dpak (type fujitsu-subcon.) 0068772/g
ld1117 series package mechanical data 29/38 figure 14. drawing dimension dpak (type ids-subcon.) 0068772/g
package mechanical data ld1117 series 30/38 note: the dpak package coming from the two subcontractors (fujitsu and ids) are fully compatible with the st's package suggested footprint. table 18. dpak mechanical data dim. type std-st type fujitsu-subcon. type ids-subcon mm. mm. mm. min. typ. max. min. typ. max. min. typ. max. a 2.20 2.40 2.25 2.30 2.35 2.19 2.38 a1 0.90 1.10 0.96 1.06 0.89 1.14 a2 0.03 0.23 0 0.10 0.03 0.23 b 0.64 0.90 0.76 0.86 0.64 0.88 b4 5.20 5.40 5.28 5.38 5.21 5.46 c 0.45 0.60 0.46 0.56 0.46 0.58 c2 0.48 0.60 0.46 0.56 0.46 0.58 d 6.00 6.20 6.05 6.15 5.97 6.22 d1 5.10 5.27 5.47 5.20 e 6.40 6.60 6.55 6.60 6.65 6.35 6.73 e1 4.70 4.77 4.70 e 2.28 2.23 2.28 2.33 2.28 e1 4.40 4.60 4.51 4.61 h 9.35 10.10 9.90 10.30 9.40 10.42 l 1.00 1.40 1.60 0.90 l1 2.80 2.50 2.65 l2 0.80 1.03 1.13 0.89 1.27 l4 0.60 1.00 0.70 0.90 0.64 1.02 r 0.20 0.40 0.20 v2 0 8 0 8 0 8
ld1117 series package mechanical data 31/38 figure 15. dpak footprint recommended data table 19. footprint data values mm. inch. a 6.70 0.264 b6.700.64 c1.80.070 d3.00.118 e 1.60 0.063 f 2.30 0.091 g 2.30 0.091
package mechanical data ld1117 series 32/38 dim. mm. inch min. typ max. min. typ. max. a 4.40 4.60 0.173 0.181 c 1.23 1.32 0.048 0.051 d 2.40 2.72 0.094 0.107 d1 1.27 0.050 e 0.49 0.70 0.019 0.027 f 0.61 0.88 0.024 0.034 f1 1.14 1.70 0.044 0.067 f2 1.14 1.70 0.044 0.067 g 4.95 5.15 0.194 0.203 g1 2.4 2.7 0.094 0.106 h2 10.0 10.40 0.393 0.409 l2 16.4 0.645 l4 13.0 14.0 0.511 0.551 l5 2.65 2.95 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.2 6.6 0.244 0.260 l9 3.5 3.93 0.137 0.154 dia. 3.75 3.85 0.147 0.151 to-220 mechanical dat a p011c
ld1117 series package mechanical data 33/38 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.0 13.2 0.504 0.512 0.519 d20.2 0.795 n60 2.362 t 14.4 0.567 ao 6.73 6.83 6.93 0.265 0.269 0.273 bo 7.32 7.42 7.52 0.288 0.292 0.296 ko 1.78 2 0.070 0.078 po 3.9 4.0 4.1 0.153 0.157 0.161 p 7.9 8.0 8.1 0.311 0.315 0.319 tape & reel sot223 mechanical data
package mechanical data ld1117 series 34/38 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 8.1 8.5 0.319 0.335 bo 5.5 5.9 0.216 0.232 ko 2.1 2.3 0.082 0.090 po 3.9 4.1 0.153 0.161 p 7.9 8.1 0.311 0.319 tape & reel so-8 mechanical data
ld1117 series package mechanical data 35/38 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.0 13.2 0.504 0.512 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 6.80 6.90 7.00 0.268 0.272 0.2.76 bo 10.40 10.50 10.60 0.409 0.413 0.417 ko 2.55 2.65 2.75 0.100 0.104 0.105 po 3.9 4.0 4.1 0.153 0.157 0.161 p 7.9 8.0 8.1 0.311 0.315 0.319 tape & reel dpak-ppak mechanical data
order code ld1117 series 36/38 8 order code (*) available on request. table 20. order code part numbers sot-223 so-8 dpak dpak (t&r) to-220 output voltage ld1117s12tr ld1117d12tr (*) ld1117dt12 (*) ld1117dt12tr ld1117v12 (*) 1.2 v ld1117s12ctr (*) ld1117d12ctr (*) ld1117dt12c (*) ld1117v12c (*) 1.2 v ld1117s18tr ld1117d18tr (*) ld1117dt18 ld1117dt18tr ld1117v18 1.8 v ld1117s18ctr (*) ld1117d18ctr (*) ld1117dt18c ld1117dt18ctr ld1117v18c (*) 1.8 v ld1117s25tr ld1117d25tr (*) ld1117dt25 ld1117dt25tr ld1117v25 2.5 v ld1117s25ctr ld1117d25ctr (*) ld1117dt25c ld1117dt25ctr ld1117v25c 2.5 v ld1117s28tr ld1117d28tr (*) ld1117dt28tr 2.85 v ld1117s30tr ld1117d30tr (*) 3 v ld1117s33tr ld1117d33tr ld1117dt33 ld1117dt33tr ld1117v33 3.3 v ld1117s33ctr ld1117d33ctr ld1117dt33c ld1117dt33ctr ld1117v33c 3.3 v ld1117s50tr ld1117d50tr ld1117dt50 ld1117dt50tr ld1117v50 5 v ld1117s50ctr ld1117d50ctr (*) ld1117dt50c ld1117dt50ctr 5 v ld1117str ld1117dtr (*) ld1117dt ld1117dttr ld1117v adj from 1.25 to 15v ld1117sc-r LD1117DC-R (*) ld1117dtc (*) ld1117dtc-r ld1117vc (*) adj from 1.25 to 15v
ld1117 series revision history 37/38 9 revision history table 21. document revision history date revision changes 22-sep-2004 15 add new part number #12c; typing error: note on table 2. 25-oct-2004 16 add v ref reference voltage on table 12. 18-jul-2005 17 the dpak mechanical data has been updated. 25-nov-2005 18 the to220fm package has been removed. 14-dec-2005 19 the t op on table 2 has been updated. 06-dec-2006 20 dpak mechanical data has been updated and add footprint data.
ld1117 series 38/38 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a particular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in military, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or register ed trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2006 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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