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march 2009 rev 1 1/24 24 ld39050xx 500 ma low quiescent current low noise voltage regulator features input voltage from 1.5 to 5.5 v ultra low dropout voltage (200 mv typ. at 500 ma load) very low quiescent current (20 a typ. at no load, 100 a typ. at 500 ma load, 1 a max in off mode) very low noise without bypass capacitor output voltage tolerance: 2.0 % @ 25 c 500 ma guaranteed output current wide range of output voltages available on request: 0.8 v to 4.5 v with 100 mv step and adj from 0.8 v logic-controlled electronic shutdown compatible with ceramic capacitor c out = 1 f internal current and thermal limit package dfn6 (3 x 3 mm) temperature range: -40 c to 125 c description the ld39050 provides 500 ma maximum current from an input voltage ranging from 1.5 v to 5.5 v with a typical dropout volt age of 200 mv. stability is provided using ceramic capacitors. the ultra low drop-voltage, low quiescent current and low noise features make it suitable for low power battery-powered applications. power supply rejection is 65 db at lo w frequencies and starts to roll off at 10 khz. an enab le logic control function puts the ld39050 in shut-down mode allowing a total current consumption lower than 1 a. the device also includes shor t-circuit constant current limiting and thermal protection. typical applications are mobile phones, personal digital assistants (pdas), cordless phones and similar battery-powered systems. dfn6 (3 x 3 mm) table 1. device summary part numbers order codes output voltages ld39050xx ld39050pur adj from 0.8 v ld39050xx10 ld39050pu10r 1.0 v ld39050xx12 ld39050pu12r 1.2 v ld39050xx25 ld39050pu25r 2.5 v ld39050xx33 ld39050pu33r 3.3 v www.st.com
contents ld39050xx 2/24 contents 1 diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 typical performance characteristi cs . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.1 power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.2 enable function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.3 power good function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8 different output voltag e versions of the ld39050xx available on request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 9 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ld39050xx diagrams 3/24 1 diagrams figure 1. schematic diagram for the ld39050pu current limit thermal protection out gnd opamp in power-good signal pg internal enable in adj en bandgap reference current limit thermal protection out gnd opamp in power-good signal pg internal enable in in adj en bandgap reference figure 2. schematic diagram for the ld39050puxx current limit thermal protection out gnd opamp in power-good signal pg internal enable in nc en bandgap reference r 1 r 2 current limit thermal protection out gnd opamp in power-good signal pg internal enable in in nc en bandgap reference r 1 r 2
pin configuration ld39050xx 4/24 2 pin configuration figure 3. pin connection (top view) ld39050puxx en gnd pg v in nc v out en gnd pg v in adj v out ld39050pu table 2. pin description symbol pin n function ld39050pu ld39050puxx en 1 1 enable pin logic input: low=shutdown, high=active gnd 2 2 common ground pg 3 3 power good v out 4 4 output voltage adj 5 - adjust pin v in 6 6 input voltage of the ldo nc - 5 not connected gnd exp pad exposed pad must be connected to gnd
ld39050xx maximum ratings 5/24 3 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. all values are referred to gnd. table 3. absolute maximum ratings symbol parameter value unit v in dc input voltage -0.3 to 7 v v out dc output voltage -0.3 to v i + 0.3 (7 v max) v en enable pin -0.3 to v i + 0.3 (7 v max) v pg power good pin -0.3 to 7 v adj adjust pin 4 v i out output current internally limited p d power dissipation internally limited t stg storage temperature range - 65 to 150 c t op operating junction temperature range - 40 to 125 c table 4. thermal data symbol parameter value unit r thja thermal resistance junction-ambient 55 c/w r thjc thermal resistance junction-case 10 c/w table 5. esd performance symbol parameter test conditions value unit esd esd protection voltage hbm 2 kv mm 0.3 kv
electrical characteristics ld39050xx 6/24 4 electrical characteristics t j = 25 c, v in = 1.8 v, c in = c out = 1 f, i out = 10 ma, v en = v in , unless otherwise specified. table 6. electrical characteristics for the ld39050pu symbol parameter test conditions min. typ. max. unit v in operating input voltage 1.5 5.5 v v adj v adj accuracy i out =10 ma, t j = 25c 784 800 816 mv i out = 10 ma, -40c ld39050xx electrical characteristics 7/24 v en enable input logic low v in =1.5 v to 5.5 v, 40c electrical characteristics ld39050xx 8/24 t j = 25 c, v in = v out(nom) + 1 v, c in = c out = 1 f, i out = 10 ma, v en = v in , unless otherwise specified. table 7. electrical characteristics for the ld39050puxx symbol parameter test conditions min. typ. max. unit v in operating input voltage 1.5 5.5 v v out v out accuracy v out >1.5v, i out =10 ma, t j = 25c -2.0 2.0 % v out >1.5 v, i out = 10 ma, -40c 1.5 v -40c ld39050xx electrical characteristics 9/24 v en enable input logic low v in =1.5 v to 5.5 v, -40c typical performance characteristics ld39050xx 10/24 5 typical performance characteristics figure 4. v adj accuracy figure 5. v out accuracy figure 6. dropout voltage vs. temperature figure 7. dropout voltage vs. temperature 0.75 0.76 0.77 0.78 0.79 0.8 0.81 0.82 0.83 0.84 0.85 -50 -25 0 25 50 75 100 125 150 t [c] v adj [v] v in = 1.8 v i out = 10 ma v en = v in 0.75 0.76 0.77 0.78 0.79 0.8 0.81 0.82 0.83 0.84 0.85 -50 -25 0 25 50 75 100 125 150 t [c] v adj [v] v in = 1.8 v i out = 10 ma v en = v in 2.45 2.46 2.47 2.48 2.49 2.5 2.51 2.52 2.53 2.54 2.55 -50 -25 0 25 50 75 100 125 150 t [c] v out [v] v in = 3.5 v i out = 10 ma v en = v in 2.45 2.46 2.47 2.48 2.49 2.5 2.51 2.52 2.53 2.54 2.55 -50 -25 0 25 50 75 100 125 150 t [c] v out [v] v in = 3.5 v i out = 10 ma v en = v in 0 50 100 150 200 250 300 350 -50 -25 0 25 50 75 100 125 150 t [c] dropout [mv] c in = c out = 1 f v en to v in , i out = 500 ma, v out @ 1.5 v 0 50 100 150 200 250 300 350 -50 -25 0 25 50 75 100 125 150 t [c] dropout [mv] c in = c out = 1 f v en to v in , i out = 500 ma, v out @ 1.5 v 0 50 100 150 200 250 300 350 -50 -25 0 25 50 75 100 125 150 t [c] dropout [mv] c in = c out = 1 f v en to v in , i out = 500 ma, v out = 2.5 v 0 50 100 150 200 250 300 350 -50 -25 0 25 50 75 100 125 150 t [c] dropout [mv] c in = c out = 1 f v en to v in , i out = 500 ma, v out = 2.5 v figure 8. dropout voltage vs. output current figure 9. short-circuit current vs. dropout voltage 0 0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2 0.225 0.25 0.275 0.3 0 100 200 300 400 500 600 i out [ma] dropout [v] v en to v in , c in = c out = 1 f 0 0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2 0.225 0.25 0.275 0.3 0 100 200 300 400 500 600 i out [ma] dropout [v] v en to v in , c in = c out = 1 f 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 0123456 v drop [v] i sc [a] 125 c 85 c 55 c 25 c 0 c -25 c -40 c v in from 0 to 5.5 v, v en = v in , c in = 1 f, c out = 1 f 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 0123456 v drop [v] i sc [a] 125 c 85 c 55 c 25 c 0 c -25 c -40 c v in from 0 to 5.5 v, v en = v in , c in = 1 f, c out = 1 f
ld39050xx typical performance characteristics 11/24 figure 10. output voltage vs. input voltage figure 11. quiescent current vs. temperature figure 12. quiescent current vs. temperature figure 13. quiescent current in off mode vs. temperature 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 v in [v] v out [v] 125c 85c 55c 25c 0c - 25c - 40c v en = v in , c in = c out = 1 f; i out = 500 ma 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 v in [v] v out [v] 125c 85c 55c 25c 0c - 25c - 40c v en = v in , c in = c out = 1 f; i out = 500 ma 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] iq [ a] no load i out = 0.5 a v in = 1.8 v, v en to v in , c in = 1 f c out = 1 f, v out = 0.8 v 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] iq [ a] no load i out = 0.5 a v in = 1.8 v, v en to v in , c in = 1 f c out = 1 f, v out = 0.8 v 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] iq [ a] no load i out = 0.5 a v in = 3.5 v, v en to v in , c in = c out = 1 f, v out = 2.5 v 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] iq [ a] no load i out = 0.5 a v in = 3.5 v, v en to v in , c in = c out = 1 f, v out = 2.5 v 0 0.1 0.2 0.3 0.4 0.5 0.6 -50 -25 0 25 50 75 100 125 150 t [c] iq [ a] v in = 3.5 v, v out = 2.5 v, v en = gnd, c in = c out = 1 f 0 0.1 0.2 0.3 0.4 0.5 0.6 -50 -25 0 25 50 75 100 125 150 t [c] iq [ a] v in = 3.5 v, v out = 2.5 v, v en = gnd, c in = c out = 1 f figure 14. load regulation figure 15. line regulation -0.04 -0.03 -0.02 -0.01 0 0.01 0.02 0.03 0.04 -50 -25 0 25 50 75 100 125 150 t [c] load [%/ma] v in = 1.8 v, i out = from 10 ma to 500 ma, v out = 0.8 v, v en = v in -0.04 -0.03 -0.02 -0.01 0 0.01 0.02 0.03 0.04 -50 -25 0 25 50 75 100 125 150 t [c] load [%/ma] v in = 1.8 v, i out = from 10 ma to 500 ma, v out = 0.8 v, v en = v in -0.04 -0.03 -0.02 -0.01 0 0.01 0.02 0.03 0.04 -50 -25 0 25 50 75 100 125 150 t [c] line [%/v] i out = 1 ma i out = 100 ma v in = from 1.8 v to 5.5 v v en = v in v out = 0.8 v -0.04 -0.03 -0.02 -0.01 0 0.01 0.02 0.03 0.04 -50 -25 0 25 50 75 100 125 150 t [c] line [%/v] i out = 1 ma i out = 100 ma v in = from 1.8 v to 5.5 v v en = v in v out = 0.8 v
typical performance characteristics ld39050xx 12/24 figure 16. line regulation figure 17. supply voltage rejection vs. temperature figure 18. supply voltage rejection vs. temperature figure 19. supply voltage rejection vs. temperature -0.04 -0.03 -0.02 -0.01 0 0.01 0.02 0.03 0.04 -50 -25 0 25 50 75 100 125 150 t [c] line [%/v] i out = 1 ma i out = 100 ma v in = from 3.5 v to 5.5 v v out = 2.5 v v en = v in -0.04 -0.03 -0.02 -0.01 0 0.01 0.02 0.03 0.04 -50 -25 0 25 50 75 100 125 150 t [c] line [%/v] i out = 1 ma i out = 100 ma v in = from 3.5 v to 5.5 v v out = 2.5 v v en = v in 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 1.7 v to 1.9 v, v out = 0.8 v, v en to v in , i out = 10 ma, freq. = 1 khz 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 1.7 v to 1.9 v, v out = 0.8 v, v en to v in , i out = 10 ma, freq. = 1 khz 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 1.7 v to 1.9 v, v out = 0.8 v, v en to v in , i out = 100 ma, freq. = 10 khz 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 1.7 v to 1.9 v, v out = 0.8 v, v en to v in , i out = 100 ma, freq. = 10 khz 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 2.9 v to 3.1 v, v out = 2.5 v, v en to v in , i out = 10 ma, freq. = 1 khz 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 2.9 v to 3.1 v, v out = 2.5 v, v en to v in , i out = 10 ma, freq. = 1 khz figure 20. supply voltage rejection vs. temperature figure 21. supply voltage rejection vs. frequency 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 2.9 v to 3.1 v, v out = 2.5 v, v en to v in , i out = 100 ma, freq. = 10 khz 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 t [c] svr [db] c in = c out = 1 f v in from 2.9 v to 3.1 v, v out = 2.5 v, v en to v in , i out = 100 ma, freq. = 10 khz 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 freq [khz] svr [db] i out = 10 ma i out = 100 ma v in from 1.7 v to 1.9 v, v en to v in , v out = 0.8 v, c in = c out = 1 f 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 freq [khz] svr [db] i out = 10 ma i out = 100 ma v in from 1.7 v to 1.9 v, v en to v in , v out = 0.8 v, c in = c out = 1 f
ld39050xx typical performance characteristics 13/24 figure 22. supply voltage rejection vs. frequency figure 23. noise output voltage vs. frequency v in = 1.8 v, v out = 0.8 v, v en = 1 v, c in = c out = 1 f, t a = 25 c figure 24. enable voltage vs. temperature figure 25. enable voltage vs. temperature 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 freq [khz] svr [db] i out = 10 ma i out = 100 ma v in from 2.9 v to 3.1 v, v en to v in , v out = 2.5 v, c in = c out = 1 f 0 10 20 30 40 50 60 70 80 90 100 0 102030405060708090100 freq [khz] svr [db] i out = 10 ma i out = 100 ma v in from 2.9 v to 3.1 v, v en to v in , v out = 2.5 v, c in = c out = 1 f 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 f [hz] en [uv/sqrt(hz)] a p - iout = 100ma a p - iout = 10ma a p - iout = 1m a p - iout = 0a 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -50 -25 0 25 50 75 100 125 150 t [c] v en [v] high low v in = 3.5 v i out = 10 ma, v out = 2.5 v, c in = c out = 1 f 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -50 -25 0 25 50 75 100 125 150 t [c] v en [v] high low v in = 3.5 v i out = 10 ma, v out = 2.5 v, c in = c out = 1 f 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -50 -25 0 25 50 75 100 125 150 t [c] v en [v] high low v in = 5.5 v i out = 10 ma v out = 2.5 v, c in = c out = 1 f 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -50 -25 0 25 50 75 100 125 150 t [c] v en [v] high low v in = 5.5 v i out = 10 ma v out = 2.5 v, c in = c out = 1 f figure 26. load transient figure 27. load transient v en = v in =1.8 v, i out = from10 ma to 0.5 a, c in = c out = 1 f, v out = 0.8 v v en = v in = 3.5v, i out from 10 ma to 0.5 a, v out = 2.5 v, c in = c out = 1 f i out v out i out v out i out v out i out v out
typical performance characteristics ld39050xx 14/24 figure 28. load transient f igure 29. line transient v en = v in = 3.5 v, i out from 100 ma to 0.5 a, v out = 2.5 v, c in = c out = 1 f v en = v in from 4.3 v to 4.8 v, i out = 10 ma, c out = 1 f, c in = no figure 30. startup transient figure 31. enable transient v en = v in = from 0 v to 5.5 v, i out =10 ma, c in = c out = 1 f, v out = 2.5 v v en from 0 v to 2 v, v in = 3.5 v, v out = 2.5 v, i out = 10 ma, c in = c out = 1f i out v out i out v out v in v out v in v out v in v out v in v out v en v out v en v out figure 32. esr required for stability with ceramic capacitors figure 33. esr required for stability with ceramic capacitors v in = v en = from 1.8 v to 5.5 v, i out = from 1 ma to 500 ma, v out = 0.8 v, c in = 1 f v in = v en = from 3.5 v to 5.5 v, i out = from 1 ma to 500 ma, v out = 2.5 v, c in = 1 f 0 0.25 0.5 0.75 1 1.25 1.5 12345678910111213141516171819202122 c out [ f] (nominal value) esr @ 100 khz [ ] unstable zone stable zone 0 0.25 0.5 0.75 1 1.25 1.5 12345678910111213141516171819202122 c out [ f] (nominal value) esr @ 100 khz [ ] unstable zone stable zone 0 0.25 0.5 0.75 1 1.25 1.5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 c out [ f] (nominal value) esr @ 100 khz [ ] stable zone unstable zone 0 0.25 0.5 0.75 1 1.25 1.5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 c out [ f] (nominal value) esr @ 100 khz [ ] stable zone unstable zone
ld39050xx application information 15/24 6 application information the ld39050 is an ultra low dropout linear regulator. it provides up to 500 ma with a low 200 mv dropout. the input voltage range is from 1.5 v to 5.5 v. the device is available in fixed and adjustable output versions. the regulator is equipped with internal protecti on circuitry, such as short-circuit current limiting and thermal protection. the regulator is designed to be stable with ceramic capacitors on the input and the output. the expected values of the input and output ceramic capacitors are from 1 f to 22 f with 1 f typical. the input capacitor must be connected within 0.5 inches of the v in terminal. the output capacitor must also be connected within 0.5 inches of output pin. there is no upper limit to the value of the input capacitor. figure 34 and figure 35 illustrate the typical application schematics: figure 34. application schematic for fixed version v in gnd v in en off on c in pg v out v out c out ld39050puxx nc 6 1 2 5 4 3 1f 1f v in gnd v in en off on c in pg v out v out c out ld39050puxx nc 6 1 2 5 4 3 1f 1f figure 35. application schematic for adjustable version v i gnd v en off on adj pg v r 1 r 2 ld39050pu 6 1 2 5 4 3 v in in c in v out out c out 1f 1f v i gnd v en off on adj pg v r 1 r 2 ld39050pu 6 1 2 5 4 3 v in in c in v out out c out 1f 1f
application information ld39050xx 16/24 for the adjustable version, the output voltage can be adjusted from 0.8 v up to the input voltage minus the voltage drop across the pmos (dropout voltage), by connecting a resistor divider between the adj pin and the output, thus allowing remote voltage sensing. the resistor divider should be selected using the following equation: v out = v adj (1 + r 1 / r 2 ) with v adj = 0.8 v (typ.) it is recommended to use resistors with values in the range of 10 k to 50 k . lower values can also be suitable, but will increase current consumption. 6.1 power dissipation an internal thermal feedback loop disables the output voltage if the die temperature rises to approximately 160 c. this feature protects the device from excessive temperature and allows the user to push the limits of the po wer handling capability of a given circuit board without risk of damaging the device. it is very important to use a good pc board layout to maximize power dissipation. the thermal path for the heat generated by the device is from the die to the copper lead frame through the package leads and exposed pad to the pc board copper. the pc board copper acts as a heat sink. the footprint copper pads should be as wide as possible to spread and dissipate the heat to the surrounding ambient. feed-through vias to inner or backside copper layers are also useful in improving the overall thermal performance of the device. the power dissipation of the device depends on the input voltage, output voltage and output current, and is given by: p d = (v in -v out ) i out the junction temperature of the device is: t j_max = t a + r thja x p d where: t j_max is the maximum junction of the die,125 c; t a is the ambient temperature; r thja is the thermal resistance junction-to-ambient. 6.2 enable function the ld39050 features an enable function. when the en voltage is higher than 2 v the device is on, and if it is lower than 0.8 v the device is off. in shutdown mode, consumption is lower than 1 a. the en pin does not have an internal pull-up, which means that it cannot be left floating if it is not used. 6.3 power good function most applications require a flag showing that the output voltage is in the correct range. the power good threshold depends on the adjust voltage. when the adjust is higher than 0.92*v adj , the power good (pg) pin goes to high impedance. if the adjust is below
ld39050xx application information 17/24 0.80*v adj the pg pin goes to low impedance. if the device is functioning well, the power good pin is at high impedance. if the output voltage is fixed using an external or internal resistor divider, the power good threshold is 0.92*v out . the use of the power good function requires an external pull-up resistor, which must be connected between the pg pin and v in or v out . the typical current ca pability of the pg pin is up to 6 ma. the use of a pull-up resistor for pg in the range of 100 k to 1 m is recommended. if the power good function is not used, the pg pin must remain floating.
package mechanical data ld39050xx 18/24 7 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com. ecopack is an st trademark.
ld39050xx package mechanical data 19/24 dim. mm. inch. min. typ. max. min. typ. max. a0. 8 00. 9 0 1.00 0.0 3 1 0.0 3 5 0.0 39 a1 0 0.02 0.05 0 0.001 0.002 a 3 0.20 0.00 8 b 0.2 3 0. 3 00. 38 0.00 9 0.012 0.015 d2. 9 0 3 .00 3 .10 0.114 0.11 8 0.122 d2 2.2 3 2. 38 2.4 8 0.0 88 0.0 9 4 0.0 98 e2. 9 0 3 .00 3 .10 0.114 0.11 8 0.122 e2 1.50 1.65 1.75 0.05 9 0.065 0.06 9 e0. 9 50.0 3 7 l0. 3 0 0.40 0.50 0.012 0.016 0.020 dfn6 ( 3 x 3 mm) mechanical data 7 9 466 3 7a
package mechanical data ld39050xx 20/24 dim. mm. inch. min. typ. max. min. typ. max. a 33 0 12. 99 2 c 12. 8 1 3 .2 0.504 0.51 9 d 20.2 0.7 9 5 n60 2. 3 62 t1 8 .4 0.724 ao 3 . 3 0.1 3 0 bo 3 . 3 0.1 3 0 ko 1.1 0.04 3 po 4 0.157 p 8 0. 3 15 tape & reel qfnxx/dfnxx ( 3 x 3 ) mechanical data
ld39050xx package mechanical data 21/24 figure 36. dfn6 (3x3) footprint recommended data
different output voltage versions of the ld39050xx available on request ld39050xx 22/24 8 different output voltage versions of the ld39050xx available on request table 8. options available on request order codes output voltages LD39050PU105R 1.05 v ld39050pu15r 1.5 v ld39050pu18r 1.8 v
ld39050xx revision history 23/24 9 revision history table 9. document revision history date revision changes 11-mar-2009 1 initial release.
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