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february 2008 rev 21 1/39 39 ld1086xx 1.5 a low drop positive voltage regulator adjustable and fixed features typical dropout 1.3 v at 1.5 a three terminal adjustable or fixed output voltage 1.5 v, 1.8 v, 2.5 v, 3.3 v, 3.6 v, 5 v, 8 v, 12 v automotive grade product: adjustable v out only in to-220 and dpak packages guaranteed output current up to 1.5a output tolerance 1 % at 25 c and 2% in full temperature range internal power and thermal limit wide operating temperature range -40 c to 125 c package available: to-220, d 2 pak, d 2 pak/a, dpak pinout compatibility wi th standard adjustable vreg description the ld1086 is a low drop voltage regulator able to provide up to 1.5 a of output current. dropout is guaranteed at a maximum of 1.2 v at the maximum output current, decreasing at lower loads. the ld1086 is pin to pin compatible with the older 3-terminal adjustable regulators, but has better performances in term of drop and output tolerance. a 2.85 v output version is suitable for scsi-2 active termination. unlike pnp regulators, where a part of the output current is wasted as quiescent current, the ld1086 quiescent current flows into the load, so increase efficiency. only a 10 f minimum capacitor is need for stability. the device is supplied in to-220, d 2 pak, d 2 pak/a and dpak. on chip trimming allows the regulator to reach a very tight output voltage tolerance, within 1 % at 25 c. the ld1086 is available as automotive grade in to-220 and dpak packages, for the option of adjustable output voltage whose commercial part numbers are shown in the ta bl e 1 8 (order codes). these devices are qualified according to the specification aec-q1 00 of the automotive market, in the temperature range -40 c to 125 c, and the statistical tests pat, syl, sbl are performed. dpak d 2 pak/a to-220 d 2 pak table 1. device summary part number ld1086xx ld1086xx18 ld1086xx36 ld1086xx12 ld1086xx25 ld1086xx50 ld1086xx15 ld1086xx33 LD1086XX80 www.st.com
contents ld1086xx 2/39 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 8 order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 9 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
ld1086xx list of figures 3/39 list of figures figure 1. schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 2. pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 figure 3. application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 4. output voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 5. output voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 6. output voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 7. short circuit current vs dropout voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 8. line regulation vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 9. load regulation vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 10. dropout voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 11. dropout voltage vs output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 12. adjust pin current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 13. adjust pin current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 14. adjust pin current vs output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 15. quiescent current vs output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 16. quiescent current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 17. supply voltage rejection vs output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 18. supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 19. supply voltage rejection vs temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 20. minimum load current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 figure 21. stability for adjustable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 22. stability for 2.85 v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 23. stability for 12 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 24. line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 25. line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 26. line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 27. load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 28. load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 29. thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 30. drawing dimension d 2 pak (type std-st). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 figure 31. drawing dimension d 2 pak (type wooseok-subcon.) . . . . . . . . . . . . . . . . . . . . . . . . . 28 figure 32. d2pak footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 figure 33. drawing dimension d 2 pak/a (type std-st) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 figure 34. drawing dimension d 2 pak/a (type wooseok-subcon.) . . . . . . . . . . . . . . . . . . . . . . . . . 32 figure 35. d 2 pak/a footprint recomm ended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
list of tables ld1086xx 4/39 list of tables table 1. device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 table 2. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 3. thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 4. electrical characteristics of ld1086#15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 5. electrical characteristics of ld1086#18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 table 6. electrical characteristics of ld1086#25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 table 7. electrical characteristics of ld1086#33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 table 8. electrical characteristics of ld1086#36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 table 9. electrical characteristics of ld1086#50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 table 10. electrical characteristics of ld1086#80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 table 11. electrical characteristics of ld1086#12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 table 12. electrical characteristics of ld1086# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 table 13. electrical characteristics of ld1086dttry and ld1086vy (automotive grade) . . . . . . . 18 table 14. d 2 pak mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 table 15. footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 table 16. d 2 pak/a mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 table 17. footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 table 18. order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 table 19. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
ld1086xx diagram 5/39 1 diagram figure 1. schematic diagram
pin configuration ld1086xx 6/39 2 pin configuration note: the tab is physically connected to the output (this is valid for the to-220 package too). figure 2. pin connections (top view) d 2 pak d 2 pak/a to-220 dpak
ld1086xx maximum ratings 7/39 3 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these condition is not implied table 2. absolute maximum ratings symbol parameter value unit v i dc input voltage 30 v i o output current internally limited ma p d power dissipation internally limited mw t stg storage temperature range -55 to +150 c t op operating junction temperature range -40 to +125 c table 3. thermal data symbol parameter to-220 d 2 pa k d 2 pak/a dpak unit r thjc thermal resistance junction-case 3 3 8 c/w r thja thermal resistance junction-ambient 50 62.5 c/w
schematic application ld1086xx 8/39 4 schematic application figure 3. application circuit v o v ref 1 r 2 r 1 ------ - + ?? ?? ? =
ld1086xx electrical characteristics 9/39 5 electrical characteristics table 4. electrical characteristics of ld1086#15 (v i = 4.5 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) 1. see short-circuit current curve for available output current at fixed dropout. i o = 0 ma, t j = 25c 1.485 1.5 1.515 v i o = 0 to 1.5a, v i = 3.4 to 30v 1.47 1.5 1.53 v v o line regulation i o = 0 ma, v i = 3.1 to 18v, t j = 25c 0.2 4 mv i o = 0 ma, v i = 3.1 to 15v 0.4 4 mv v o load regulation i o = 0 to 1.5a, t j = 25c 0.5 8 mv i o = 0 to 1.5a 1 16 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.02 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 6.5 3v 60 82 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 %
electrical characteristics ld1086xx 10/39 table 5. electrical characteristics of ld1086#18 (v i = 4.8 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 1.782 1.8 1.818 v i o = 0 to 1.5a, v i = 3.4 to 30v 1.764 1.8 1.836 v v o line regulation i o = 0 ma, v i = 3.4 to 18v, t j = 25c 0.2 4 mv i o = 0 ma, v i = 3.4 to 15v 0.4 4 mv v o load regulation i o = 0 to 1.5a, t j = 25c 0.5 8 mv i o = 0 to 1.5a 1 16 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.02 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 6.8 3v 60 82 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
ld1086xx electrical characteristics 11/39 table 6. electrical characteristics of ld1086#25 (v i = 5.5 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 2.475 2.5 2.525 v i o = 0 to 1.5a, v i = 4.1 to 30v 2.45 2.5 2.55 v v o line regulation i o = 0 ma, v i = 4.1 to 18v, t j = 25c 0.2 4 mv i o = 0 ma, v i = 4.1 to 18v 0.4 4 mv v o load regulation i o = 0 to 1.5a, t j = 25c 0.5 8 mv i o = 0 to 1.5a 1 16 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.008 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 7.5 3v 60 81 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
electrical characteristics ld1086xx 12/39 table 7. electrical characteristics of ld1086#33 (v i = 6.3 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 3.267 3.3 3.333 v i o = 0 to 1.5a, v i = 4.9 to 30v 3.234 3.3 3.366 v v o line regulation i o = 0 ma, v i = 4.9 to 18v, t j = 25c 0.5 6 mv i o = 0 ma, v i = 4.9 to 18v 1 6 mv v o load regulation i o = 0 to 1.5a, t j = 25c 1 10 mv i o = 0 to 1.5a 7 25 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.008 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 8.3 3v 60 79 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
ld1086xx electrical characteristics 13/39 table 8. electrical characteristics of ld1086#36 (v i = 6.6 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 3.564 3.6 3.636 v i o = 0 to 1.5a, v i = 5.2 to 30v 3.528 3.6 3.672 v v o line regulation i o = 0 ma, v i = 5.2 to 18v, t j = 25c 0.5 10 mv i o = 0 ma, v i = 5.2 to 18v 1 10 mv v o load regulation i o = 0 to 1.5a, t j = 25c 3 15 mv i o = 0 to 1.5a 7 25 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 8.6 3v 60 78 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
electrical characteristics ld1086xx 14/39 table 9. electrical characteristics of ld1086#50 (v i = 8 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 4.95 5 5.05 v i o = 0 to 1.5a, v i = 6.6 to 30v 4.9 5 5.1 v v o line regulation i o = 0 ma, v i = 6.6 to 20v, t j = 25c 0.5 10 mv i o = 0 ma, v i = 6.6 to 20v 1 10 mv v o load regulation i o = 0 to 1.5a, t j = 25c 5 20 mv i o = 0 to 1.5a 10 35 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 10 3v 60 75 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
ld1086xx electrical characteristics 15/39 table 10. electrical characteristics of ld1086#80 (v i = 11 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 7.92 8 8.08 v i o = 0 to 1.5a, v i = 9.8 to 30v 7.84 8 8.16 v v o line regulation i o = 0 ma, v i = 9.8 to 20v, t j = 25c 1 18 mv i o = 0 ma, v i = 9.8 to 20v 2 18 mv v o load regulation i o = 0 to 1.5a, t j = 25c 8 30 mv i o = 0 to 1.5a 12 60 mv v d dropout voltage i o =1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.04 0.2 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 13 3v 54 71 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
electrical characteristics ld1086xx 16/39 table 11. electrical characteristics of ld1086#12 (v i = 15 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 0 ma, t j = 25c 11.88 12 12.12 v i o = 0 to 1.5a, v i = 13.8 to 30v 11.76 12 12.24 v v o line regulation i o = 0 ma, v i = 13.8 to 25v, t j = 25c 125mv i o = 0 ma, v i = 13.8 to 25v 2 25 mv v o load regulation i o = 0 to 1.5a, t j = 25c 12 36 mv i o = 0 to 1.5a 24 72 mv v d dropout voltage i o = 1.5a 1.3 1.5 v i q quiescent current v i 30v 5 10 ma i sc short circuit current v i - v o = 5v 1.5 2 a v i - v o = 25v 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f, i o = 1.5a v i = 17 3v 54 66 db en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
ld1086xx electrical characteristics 17/39 table 12. electrical characteristics of ld1086# (v i = 4.25 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 10ma t j = 25c 1.237 1.25 1.263 v i o = 10ma to 1.5a, v i = 2.85 to 30v 1.225 1.25 1.275 v v o line regulation i o = 10ma, v i = 2.8 to 16.5v, t j = 25c 0.015 0.2 % i o = 10ma, v i = 2.8 to 16.5v 0.035 0.2 % v o load regulation i o = 10ma to 1.5a, t j = 25c 0.1 0.3 % i o = 0 to 1.5a 0.2 0.4 % v d dropout voltage i o = 1.5a 1.3 1.5 v i o(min) minimum load current v i = 30v 3 10 ma i sc short circuit current v i - v o = 5v 1.5 2.3 a v i - v o = 25v 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f,c adj = 25 f, i o = 1.5a, v i = 6.25 3v 60 88 db i adj adjust pin current v i = 4.25v, i o = 10 ma 40 120 a i adj adjust pin current change (1) i o = 10ma to 1.5a, v i = 2.8 to 16.5v 0.2 5 a en rms output noise voltage (% of v o ) t a = 25c, f =10hz to 10khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
electrical characteristics ld1086xx 18/39 table 13. electrical characteristics of ld1086dttry and ld1086vy (automotive grade) (v i = 4.25 v, c i = c o =10 f, t a = -40 to 125 c, unless otherwise specified). symbol parameter test co ndition min. typ. max. unit v o output voltage (1) i o = 10 ma t a = 25c 1.237 1.25 1.263 v i o = 10 ma to 1.5 a, v i = 2.85 to 30 v 1.225 1.25 1.275 v v o line regulation i o = 10 ma, v i = 2.8 to 16.5 v 0.035 0.2 % v o load regulation i o = 0 to 1.5 a 0.2 0.4 % v d dropout voltage i o = 1.5 a 1.3 1.5 v i o(min) minimum load current v i = 30 v 3 10 ma i sc short circuit current v i - v o = 5 v, t a = 25c 1.5 2.3 a v i - v o = 25 v, t a = 25c 0.05 0.2 a thermal regulation t a = 25c, 30ms pulse 0.01 0.04 %/w svr supply voltage rejection f = 120 hz, c o = 25 f,c adj = 25 f, i o = 1.5 a, v i = 6.25 3 v, t a = 25c 60 88 db i adj adjust pin current v i = 4.25 v, i o = 10 ma 40 120 a i adj adjust pin current change (1) i o = 10 ma to 1.5 a, v i = 2.8 to 16.5 v 0.2 5 a en rms output noise voltage (% of v o ) t a = 25c, f =10 hz to 10 khz 0.003 % s temperature stability 0.5 % s long term stability t a = 125c, 1000 hrs 0.5 % 1. see short-circuit current curve for available output current at fixed dropout.
ld1086xx typical application 19/39 6 typical application (unless otherwise specified t j = 25 c, c i = c o = 10 f) figure 4. output voltage vs temperature figure 5. output voltage vs temperature figure 6. output voltage vs temperature figure 7. short circuit current vs dropout voltage figure 8. line regulation vs temperature figure 9. load regulation vs temperature
typical application ld1086xx 20/39 figure 10. dropout voltage vs temperature figure 11. dropout voltage vs output current figure 12. adjust pin current vs input voltage figure 13. adjust pin current vs temperature figure 14. adjust pin current vs output current figure 15. quiescent current vs output current
ld1086xx typical application 21/39 figure 16. quiescent current vs input voltage figure 17. supply voltage rejection vs output current figure 18. supply voltage rejection vs frequency figure 19. supply voltage rejection vs temperature figure 20. minimum load current vs temperature figure 21. stability for adjustable
typical application ld1086xx 22/39 figure 22. stability for 2.85v figure 23. stability for 12v figure 24. line transient figure 25. line transient v i =12 to 13v, i o =200ma, c i = 1f(tant), c o =10f(tant), no c adj v i =12 to 13v, i o =200ma, c i = 1f(tant), c o =10f(tant), no c adj figure 26. line transient figure 27. load transient v i =12 to 13v, i o =200ma, c i = 1f(tant), c o =10f(tant), c adj = 1f v i =13v, i o =0.1 to 1.5a, c i = 1f(tant), c o =10f(tant) c adj =1f
ld1086xx typical application 23/39 figure 28. load transient figure 29. thermal protection v i =13v, i o =0.1 to 1.5a, c i =1f(tant), c o =10f(tant), c adj =1f v o =2.85v
package mechanical data ld1086xx 24/39 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.
ld1086xx package mechanical data 25/39 dim. mm. inch. min. typ. max. min. typ. max. a 4.40 4.60 0.17 3 0.1 8 1 c1.2 3 1. 3 2 0.04 8 0.051 d 2.40 2.72 0.0 9 4 0.107 d1 1.27 0.050 e0.4 9 0.70 0.01 9 0.027 f 0.61 0. 88 0.024 0.0 3 4 f1 1.14 1.70 0.044 0.067 f2 1.14 1.70 0.044 0.067 g4. 9 5 5.15 0.1 9 4 0.20 3 g1 2.4 2.7 0.0 9 4 0.106 h2 10.0 10.40 0. 393 0.40 9 l2 16.4 0.645 l4 1 3 .0 14.0 0.511 0.551 l5 2.65 2. 9 5 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.2 6.6 0.244 0.260 l 93 .5 3 . 93 0.1 3 7 0.154 dia. 3 .75 3 . 8 5 0.147 0.151 to-220 mechanical data p011c
package mechanical data ld1086xx 26/39 dim. mm. inch. min. typ. max. min. typ. max. a 2.2 2.4 0.0 8 6 0.0 9 4 a1 0. 9 1.1 0.0 3 5 0.04 3 a2 0.0 3 0.2 3 0.001 0.00 9 b 0.64 0. 9 0.025 0.0 3 5 b 4 5.2 5.4 0.204 0.212 c 0.45 0.6 0.017 0.02 3 c2 0.4 8 0.6 0.01 9 0.02 3 d 6 6.2 0.2 3 6 0.244 d1 5.1 0.200 e 6.4 6.6 0.252 0.260 e1 4.7 0.1 8 5 e2.2 8 0.0 9 0 e1 4.4 4.6 0.17 3 0.1 8 1 h 9 . 3 5 10.1 0. 3 6 8 0. 39 7 l 1 0.0 39 (l1) 2. 8 0.110 l2 0. 8 0.0 3 1 l4 0.6 1 0.02 3 0.0 39 r 0.2 0.00 8 v2 0 8 0 8 dpak mechanical data 006 8 772-f
ld1086xx package mechanical data 27/39 figure 30. drawing dimension d 2 pak (type std-st) 0079457/l
package mechanical data ld1086xx 28/39 figure 31. drawing dimension d 2 pak (type wooseok-subcon.) 0079457/l
ld1086xx package mechanical data 29/39 note: the d 2 pak package coming from the subcontractor wooseok is fully compatible with the st's package suggested footprint. table 14. d 2 pak mechanical data dim. type std-st type wooseok-subcon. mm. mm. min. typ. max. min. typ. max. a 4.40 4.60 4.30 4.70 a1 0.03 0.23 0 0.20 b 0.70 0.93 0.70 0.90 b2 1.14 1.70 1.17 1.37 c 0.45 0.60 0.45 0.50 0.60 c2 1.23 1.36 1.25 1.30 1.40 d 8.95 9.35 9 9.20 9.40 d1 7.50 7.50 e 10 10.40 9.80 10.20 e1 8.50 7.50 e2.54 2.54 e1 4.88 5.28 5.08 h 15 15.85 15 15.30 15.60 j1 2.49 2.69 2.20 2.60 l 2.29 2.79 1.79 2.79 l1 1.27 1.40 1 1.40 l2 1.30 1.75 1.20 1.60 r 0.4 0.30 v2 0 8 0 3
package mechanical data ld1086xx 30/39 figure 32. d 2 pak footprint recommended data table 15. footprint data values mm. inch. a 12.20 0.480 b9.750.384 c 16.90 0.665 d3.500.138 e1.600.063 f2.540.100 g5.080.200
ld1086xx package mechanical data 31/39 figure 33. drawing dimension d 2 pak/a (type std-st) 7106164/e
package mechanical data ld1086xx 32/39 figure 34. drawing dimension d 2 pak/a (type wooseok-subcon.) 7106164/e
ld1086xx package mechanical data 33/39 note: the d 2 pak/a package coming from the subcontractor wooseok is fully compatible with the st's package suggested footprint. table 16. d 2 pak/a mechanical data dim. type std-st type wooseok-subcon. mm. mm. min. typ. max. min. typ. max. a 4.40 4.60 4.30 4.70 a1 0.03 0.23 0 0.20 b 0.70 0.93 0.70 0.90 b1 0.80 1.30 b2 1.14 1.70 1.17 1.37 c 0.45 0.60 0.45 0.50 0.60 c2 1.23 1.36 1.25 1.30 1.40 d 8.95 9.35 9 9.20 9.40 d1 7.50 7.50 e 10 10.40 9.80 10.20 e1 8.50 7.50 e2.54 2.54 e1 4.88 5.28 5.08 h 15 15.85 15 15.30 15.60 j1 2.49 2.69 2.20 2.60 l 2.29 2.79 1.79 2.79 l1 1.27 1.40 1 1.40 r 0.4 0.30 v2 0 8 0 3
package mechanical data ld1086xx 34/39 figure 35. d 2 pak/a footprint recommended data table 17. footprint data values mm. inch. a 12.20 0.480 b9.750.384 c 16.90 0.665 d3.500.138 e1.600.063 f2.540.100 g5.080.200
ld1086xx package mechanical data 35/39 dim. mm. inch. min. typ. max. min. typ. max. a 33 0 12. 99 2 c12. 8 1 3 .0 1 3 .2 0.504 0.512 0.51 9 d 20.2 0.7 9 5 n60 2. 3 62 t22.40. 88 2 ao 6. 8 06. 9 0 7.00 0.26 8 0.272 0.2.76 bo 10.40 10.50 10.60 0.40 9 0.41 3 0.417 ko 2.55 2.65 2.75 0.100 0.104 0.105 po 3 . 9 4.0 4.1 0.15 3 0.157 0.161 p7. 98 .0 8 .1 0. 3 11 0. 3 15 0. 3 1 9 tape & reel dpak-ppak mechanical data
package mechanical data ld1086xx 36/39 dim. mm. inch. min. typ. max. min. typ. max. a1 8 0 7.0 8 6 c 12. 8 1 3 .0 1 3 .2 0.504 0.512 0.51 9 d 20.2 0.7 9 5 n60 2. 3 62 t 14.4 0.567 ao 10.50 10.6 10.70 0.41 3 0.417 0.421 bo 15.70 15. 8 0 15. 9 0 0.61 8 0.622 0.626 ko 4. 8 04. 9 0 5.00 0.1 89 0.1 93 0.1 9 7 po 3 . 9 4.0 4.1 0.15 3 0.157 0.161 p 11. 9 12.0 12.1 0.46 8 0.472 0.476 tape & reel d 2 pak-p 2 pak-d 2 pak/a-p 2 pak/a mechanical data
ld1086xx order codes 37/39 8 order codes table 18. order codes packages to-220 d 2 pak d 2 pa k/a dpak ou t pu t vo lt ag e ld1086d2t15r ld1086dt15r 1.5 v ld1086v18 ld1086d2t18tr ld1086dt18tr 1.8 v ld1086v25 ld1086d2t25tr ld1086dt25tr 2.5 v ld1086v33 ld1086d2t33tr ld1086d2m33tr ld1086dt33tr 3.3 v ld1086v36 3.6 v ld1086d2t50tr ld1086dt50tr 5.0 v ld1086v80 ld1086d2t80tr ld1086dt80tr 8.0 v ld1086v12 ld1086d2t12tr 12.0 v ld1086v ld1086d2ttr ld1086d2mtr ld1086dttr adj ld1086vy (1) ld1086dttry (1) 1. automotive grade products. adj
revision history ld1086xx 38/39 9 revision history table 19. document revision history date revision changes 25-aug-2004 11 mistake v o (typ.), table 9 - pag. 6. 07-oct-2004 12 mistake order codes - table 1. 08-feb-2005 13 mistake u.m. load regulation - v ==> mv. 16-may-2006 14 order codes updated and new template. 19-jan-2007 15 d 2 pak mechanical data updated and add footprint data. 05-apr-2007 16 order codes updated. 07-jun-2007 17 order codes updated. 19-jul-2007 18 add note on figure 2 . 03-dec-2007 19 modified: ta b l e 1 8 . 31-jan-2008 20 added new order codes for automotive grade products. 18-feb-2008 21 modified: table 18 on page 37 .
ld1086xx 39/39 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 parti cular 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 milita ry, 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 registered 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. ? 2008 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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