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ame, inc. 1 ame8838 high psrr, 150ma cmos ldo rev.e.04 n typical application n functional block diagram l very low dropout voltage l guaranteed 150ma output l 30 m a quiescent current l over-temperature shutdown l current limiting l excellent psrr (typ. 65db) l power-saving shutdown mode l ultra-small sc-70-5, sc-70-4 & sot-23 l factory pre-set output voltages l low temperature coefficient l input voltage range (2v - 6v) l all ame's lead free products meet rohs standard. the ame8838 family of positive, linear regulators fea- ture low quiescent current (30 m a typ.) low dropout volt- age and excellent psrr, thus making them ideal for tele- communications and other battery applications. the ul- tra-small sc-70-5, sc-70-4 & sot-23 packages are at- tractive for "pocket" and "hand held" applications. these rugged devices have both thermal shutdown and current limit to prevent device failure under the "worst" operating conditions. the ame 8838 is stable with an output capacitance of 1 m f or larger. l cellular phones l instrumentation l portable electronics l wireless devices l cordless phones l pc peripherals l battery powered widgets l cameras l telecommunications n general description n features n applications 1 m f out in c2 ame8838 gnd out en in c1 1 m f in gnd out in overcurrent shutdown thermal shutdown en v ref amp r1 r2 - + packages
ame, inc. 2 high psrr, 150ma cmos ldo ame8838 rev.e.04 n pin configuration ame8838aeiv 1. in 2. gnd 3. en 4. nc 5. out * die attach: conductive epoxy sc-70-5 top view 1 3 2 5 4 ame8838 sc-70-5 top view 1 3 2 5 4 ame8838 ame8838beiv 1. out 2. gnd 3. in 4. en 5. nc * die attach: conductive epoxy sot-23 top view 1 2 3 ame8838 ame8838aeet 1. gnd 2. out 3. in * die attach: non-conductive epoxy sc-70-4 top view ame8838aeiu 1. en 2. gnd 3. out 4. in * die attach: conductive epoxy 1 3 2 4 ame8838
ame, inc. 3 ame8838 high psrr, 150ma cmos ldo rev.e.04 pin number pin name pin description 1 in input voltage pin. it should be decoupled with 1 m f or greater capacitor. 2 gnd ground connection pin. 3 en enable pin. when pulled low, the pmos pass transistor turns off, current consuming less than 1a. 4 nc no connection. 5 out ldo voltage regulator output pin. it should be decoupled with a 1f or greater value low esr ceramic capacitor. n pin description ame8838aeiv sc-70-5 ame8838beiv sc-70-5 ame8838aeet sot-23 pin number pin name pin description 1 out ldo voltage regulator output pin. it should be decoupled with a 1f or greater value low esr ceramic capacitor. 2 gnd ground connection pin. 3 in input voltage pin. it should be decoupled with 1 m f or greater capacitor. 4 en enable pin. when pulled low, the pmos pass transistor turns off, current consuming less than 1a. 5 nc no connection. pin number pin name pin description 1 gnd ground connection pin. 2 out ldo voltage regulator output pin. it should be decoupled with a 1f or greater value low esr ceramic capacitor. 3 in input voltage pin. it should be decoupled with 1 m f or greater capacitor.
ame, inc. 4 high psrr, 150ma cmos ldo ame8838 rev.e.04 pin number pin name pin description 1 en enable pin. when pulled low, the pmos pass transistor turns off, current consuming less than 1a. 2 gnd ground connection pin. 3 out ldo voltage regulator output pin. it should be decoupled with a 1f or greater value low esr ceramic capacitor. 4 in input voltage pin. it should be decoupled with 1 m f or greater capacitor. n pin description ame8838aeiu sc-70-4
ame, inc. 5 ame8838 high psrr, 150ma cmos ldo rev.e.04 n ordering information operating ambient temperature range number of pins package type pin configuration special feature ame8838 x x x x xxx x output voltage a: 1. in e: -40 o c to 85 o c e: sot-2x t: 3 120: v=1.2v y: lead free & low profile (sc-70-5) 2. gnd i: sc-70 v: 5 150: v=1.5v z: lead free 3. en u: 4 180: v=1.8v 4. nc 250: v=2.5v 5. out 270: v=2.7v 285: v=2.85v b: 1. out 300: v=3.0v (sc-70-5) 2. gnd 310: v=3.1v 3. in 330: v=3.3v 4. en 5. nc a: 1. en (sc-70-4) 2. gnd 3. out 4. in a: 1. gnd (sot-23) 2. out (tsot-23) 3. in special feature pin configuration output voltage operating ambient temperature range package type number of pins
ame, inc. 6 high psrr, 150ma cmos ldo ame8838 rev.e.04 n ordering information note: w & ww represent the date code and pls refer to date code rule page on package dimension. * a line on top of the first letter represents lead free plating such as blfw. please consult ame sales office or authorized rep./distributor for the availability of package type. part number marking* output voltage package operating ambient temperature range ame8838aeiu180z blfw 1.8v sc-70-4 - 40 o c to 85 o c ame8838aeiu270z blgw 2.7v sc-70-4 - 40 o c to 85 o c ame8838aeiu280z blhw 2.8v sc-70-4 - 40 o c to 85 o c ame8838aeiv150z bfdw 1.5v sc-70-5 - 40 o c to 85 o c ame8838aeiv180z belw 1.8v sc-70-5 - 40 o c to 85 o c ame8838aeiv250z bfew 2.5v sc-70-5 - 40 o c to 85 o c ame8838aeiv270z bhsw 2.7v sc-70-5 - 40 o c to 85 o c ame8838aeiv280z bffw 2.8v sc-70-5 - 40 o c to 85 o c ame8838aeiv285z bhvw 2.85v sc-70-5 - 40 o c to 85 o c ame8838aeiv300z bfgw 3.0v sc-70-5 - 40 o c to 85 o c ame8838aeiv310z bhtw 3.1v sc-70-5 - 40 o c to 85 o c ame8838aeiv330z bekw 3.3v sc-70-5 - 40 o c to 85 o c ame8838aeet180z bfpww 1.8v sot-23 - 40 o c to 85 o c
ame, inc. 7 ame8838 high psrr, 150ma cmos ldo rev.e.04 n absolute maximum ratings n recommended operating conditions caution: stress above the listed absolute maximum rating may cause permanent damage to the device hbm b*: 2000v ~ 3999v n thermal information * measure q jc on backside center of molding compund if ic has no tab. ** mil-std-202g 210f parameter symbol rating unit ambient temperature range t a - 40 to 85 o c junction temperature range t j - 40 to 125 o c storage temperature range t stg - 65 to 150 o c parameter maximum unit input voltage -0.3 to 7 v en voltage -0.3 to 7 v output voltage - 0.3 to v in + 0.3 v output current p d / (v in - v out ) ma esd classification b* parameter package die attach symbol maximum unit sot-23 non-conductive epoxy 260 sc-70-4 sc-70-5 conductive epoxy 331 thermal resistance (junction to case) sot-23* non-conductive epoxy q jc 81 sot-23 non-conductive epoxy 400 sc-70-4 sc-70-5 conductive epoxy 300 150 o c 350 o c o c / w mw maximum junction temperature solder iron (10 sec)** thermal resistance (junction to ambient) internal power dissipation q ja p d
ame, inc. 8 high psrr, 150ma cmos ldo ame8838 rev.e.04 parameter symbol min typ max units input voltage v in note1 6 v -1.5 1.5 -3 3 current limit i lim 200 350 500 short circuit limit i sc 200 quiescent current i q 30 45 m a -0.25 0.1 0.25 -0.4 0.4 -0.4 0.2 0.4 -0.6 0.6 over temperature shutdown ots 160 o c over temperature hysterisis oth 40 o c v out temperature coefficient tc 30 ppm/ o c power supply ripple rejection psrr 65 db i out =150ma, v out <=2.0v, v dropout =2.5v-v out 120 250 i out =150ma, 2.0v= 3.0v v out =v out(nom) -2%v out(nom) 120 240 i out =80ma, 2.5v<=v out < 3.0v v out =v out(nom) -2%v out(nom) 90 dropout voltage (see note 1) v dropout i out =80ma, v out >= 3.0v v out =v out(nom) -2%v out(nom) i out =80ma, 2.0v 2.0v t a = 25 o c v out <= 2.0v v in = 2.5v v out > 2.0v v in = v out + 0.5v i out = 1 to 150ma test condition %/v i out = 1ma, t a = 25 o c line regulation (see note 2) reg line t a = 25 o c i out = 1ma, v out <= 2.0v v in = 2.5v to v in = 6v t a = 25 o c, v in = 6v, 1ma < i out < 150ma v out = 0.8xv out(nom) , t a = 25 o c load regulation (see note 3) reg load output voltage accuracy v out(nom) v out = 0v, t a = 25 o c v in = 4.3v, v out = 3.3v, c out = 10 m f i out = 100ma, f = 1khz v in = v out +0.5v to v in = 6v ma % i out = 1ma, t j = -40 to 125 o c -0.02 0.0025 t j =-40 to 125 o c t j = -40 to 12 5 o c n electrical specifications (contd.) v out(nom) > 2.0v, v in =v out(nom) + 0.5v; v out 2v, v in = 2.5v, v en = v in , t j = -40 to 125 o c, c in = c out = 1 m f unless otherwise noted.
ame, inc. 9 ame8838 high psrr, 150ma cmos ldo rev.e.04 n electrical specifications note1: if v out(nom) > 2.0v, v in(min) =v out(nom) +v dropout . if v out(nom) <=2.0v, v in(min) =2.5v. note2: line regulation = note3: load regulation = ) ( % 100 ma i vout vout d d vout vin vout % 100 d d parameter symbol min typ max units output voltage noise e n 40 m vrms v enh 1.4 v in v v enl 0 0.3 v enable input bias current i en 0.01 1 m a shutdown supply current i sd 0.5 1 m a shutdown output voltage v o,sd 0.2 v enable input threshold i out = 1ma test condition v out <= 0.2v v in = 6v, v en = 0v v out >= v out(min) v in = 6v, v en = 0v or 6v f = 10hz to 100khz, i out = 10ma
ame, inc. 10 high psrr, 150ma cmos ldo ame8838 rev.e.04 the ame8838 is stable with an output capacitor to ground of 1 m f or larger. ceramic capacitors have the low- est esr, and will offer the best ac performance. con- versely, aluminum electrolytic capacitors exhibit the high- est esr, resulting in the poorest ac response. a second capacitor is recommended between the in- put and ground to stabilize v in . the input capacitor should be at least 1 m f to have a beneficial effect. n detailed description n external capacitors n enable the enable pin is normally pull-high. when activated pulled low, the pmos pass transistor shuts off, and all internal circuits are powered down. in this state, the stand by current is less than 1 m a. this pin can ? t be floating. the ame8838 family of cmos regulators contain a pmos pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown. the p-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal pro- tection circuits. during normal operation, the error ampli- fier compares the output voltage to a precision reference. over-current and thermal shutdown circuits become ac- tive when the junction temperature exceeds 150 o c, or the current exceeds 150ma. during thermal shutdown, the output voltage remains low. normal operation is re- stored when the junction temperature drops below 130 o c. the ame8838 switches from voltage mode to current mode when the load exceeds the rated output current. this prevents over-stress.
ame, inc. 11 ame8838 high psrr, 150ma cmos ldo rev.e.04 dropout voltage vs temperature output voltage vs load current output impedance vs frequency line transient response load transient response 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 10 100 1000 10000 100000 1000000 i o =50ma i o =100ma o u t p u t i m p e d a n c e ( w ) frequency (hz) 3.285 3.29 3.295 3.30 3.305 3.31 3.315 3.32 3.325 3.33 0 15 30 45 60 75 90 105 120 135 150 load current (ma) o u t p u t v o l t a g e ( v ) 3.270 3.275 3.280 3.285 3.290 3.295 3.300 3.305 3.310 3.315 3.320 -40 -25 -10 5 20 35 50 65 80 95 110 125 i o =150ma i o =1ma o u t p u t v o l t a g e ( v ) temperature ( o c) output voltage vs temperature 0 50 100 150 200 250 300 350 400 450 500 550 -40 -25 -10 5 20 35 50 65 80 95 110 125 d r o p o u t v o l t a g e ( m v ) temperature ( o c) i n p u t v o l t a g e ( v ) o u t p u t v o l t a g e ( m v ) 5.3 20 -20 4.3 time ( m s) o u t p u t v o l t a g e ( m v ) o u t p u t c u r r e n t ( m a ) 200 -50 0 50 0 100 time ( m s) d i d t = 25ma/ m s
ame, inc. 12 high psrr, 150ma cmos ldo ame8838 rev.e.04 quiescent current vs temperature rising time en v out 20 m s/div 3.8v 3.3v 0 5 10 15 20 25 30 35 40 -40 -25 -10 5 20 35 50 65 80 95 110 125 q u i e s c e n t c u r r e n t ( m a ) temperature ( o c)
ame, inc. 13 ame8838 high psrr, 150ma cmos ldo rev.e.04 n date code rule year a a a xxx0 a a a xxx1 a a a xxx2 a a a xxx3 a a a xxx4 a a a xxx5 a a a xxx6 a a a xxx7 a a a xxx8 a a a xxx9 w w w w w w w w marking date code w w for sc-70 package only a: 01&02 k: 21&22 u: 41&42 b: 03&04 l: 23&24 v: 43&44 c: 05&06 m: 25&26 w: 45&46 d: 07&08 n: 27&28 x: 47&48 e: 09&10 o: 29&30 y: 49&50 f: 11&12 p: 31&32 z: 51&52 g: 13&14 q: 33&34 h: 15&16 r: 35&36 i: 17&18 s: 37&38 j: 19&20 t: 39&40 w: work week code year a a a w w xxx0 a a a w w xxx1 a a a w w xxx2 a a a w w xxx3 a a a w w xxx4 a a a w w xxx5 a a a w w xxx6 a a a w w xxx7 a a a w w xxx8 a a a w w xxx9 marking date code for sot-23 package
ame, inc. 14 high psrr, 150ma cmos ldo ame8838 rev.e.04 package carrier width (w) pitch (p) part per full reel reel size sc-70-5 8.00.1 mm 4.00.1 mm 3000pcs 1801 mm sc-70-5 carrier tape, number of components per reel and reel size w p ame ame pin 1 package carrier width (w) pitch (p) part per full reel reel size sot-23 8.00.1 mm 4.00.1 mm 3000pcs 1801 mm n tape and reel dimension carrier tape, number of components per reel and reel size sot-23 pin 1 w p ame ame
ame, inc. 15 ame8838 high psrr, 150ma cmos ldo rev.e.04 package carrier width (w) pitch (p) part per full reel reel size sc-70-4 8.00.1 mm 4.00.1 mm 3000pcs 1801 mm n tape and reel dimension carrier tape, number of components per reel and reel size sc-70-4 w p ame ame pin 1
ame, inc. 16 high psrr, 150ma cmos ldo ame8838 rev.e.04 n package dimension sc-70-5 top view front view detail a side view section a-a d e1 e1/2 e1 e b b b a c c 0.15(0.006) c .10(0.004) m e/2 e see detail a a a .10(0.004) base metal c a2 a1 a 0.15(0.006) gage plane l c c1 h .15(.0059) b1 (b) c1 c c seating plane d min max min max a 0.80 1.10 0.031 0.043 a1 0.00 0.10 0.000 0.004 a2 0.80 1.00 0.031 0.040 b 0.15 0.30 0.006 0.012 b1 0.15 0.25 0.006 0.010 c 0.08 0.25 0.003 0.010 c1 0.08 0.20 0.003 0.008 d 1.90 2.15 0.074 0.084 e 2.00 2.20 0.078 0.086 e1 1.15 1.35 0.045 0.055 e e1 l 0.26 0.46 0.010 0.018 q 1 0 o 8 o 0 o 8 o q 2 4 o 10 o 4 o 10 o 0.65bsc 1.30bsc 0.0255bsc 0.0512bsc symbols millimeters inches
ame, inc. 17 ame8838 high psrr, 150ma cmos ldo rev.e.04 n package dimension sc-70-4 top view e1 d e e1 b1 b d side view q l l1 e c 0.20 front view a1 a2 a min max min max a 0.900 1.100 0.035 0.043 a1 0.000 0.100 0.000 0.004 a2 0.900 1.000 0.035 0.039 b 0.250 0.400 0.010 0.016 b1 0.350 0.500 0.014 0.020 c 0.080 0.150 0.003 0.006 d d 2.000 2.200 0.079 0.087 e 1.150 1.350 0.045 0.053 e1 2.150 2.450 0.085 0.096 e e1 1.200 1.400 0.047 0.055 l l1 0.260 0.460 0.010 0.018 q 0 o 8 o 0 o 8 o 0.050 typ 0.002 typ 0.525 ref 0.021 ref 0.650 typ 0.026typ symbols millimeters inches
ame, inc. 18 high psrr, 150ma cmos ldo ame8838 rev.e.04 n package dimension sot-23 min max min max a 1.00 1.40 0.0394 0.0551 a 1 0.00 0.15 0.0000 0.0059 b 0.35 0.50 0.0138 0.0197 c 0.09 0.25 0.0035 0.0098 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e h 2.40 3.00 0.09449 0.11811 l q 1 0 o 10 o 0 o 10 o symbols millimeters inches 1.90 bsc 0.0748 bsc 0.35bsc 0.0138bsc b c1 c d h e e l a a 1 top view side view front view
life support policy: these products of ame, inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of ame, inc. ame, inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ? ame, inc. , september 2007 document: 1003-ds8838-e.04 corporate headquarter ame, inc. 2f, 302 rui-guang road, nei-hu district taipei 114, taiwan. tel: 886 2 2627-8687 fax: 886 2 2659-2989 www.ame.com.tw e-mail: sales@ame.com.tw u.s.a.(subsidiary) analog microelectronics, inc. 3100 de la cruz blvd., suite 201 santa clara, ca. 95054-2438 tel : (408) 988-2388 fax: (408) 988-2489

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