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ame 1 ame8841 600ma cmos ldo rev.h.02 n typical application n functional block diagram l very low dropout voltage l guaranteed 600ma output l accurate to within 1.5% l 30 m a quiescent current l over-temperature shutdown l current limiting l short circuit current fold-back l power-saving shutdown mode l space-saving sop- 8 package l many fixed output voltages available l low temperature coefficient l all ame' s lead free products meet rohs standards the ame8841 linear regulator features low quiescent current (30 m a typ.) with low dropout voltage, making it ideal for battery applications. the space-saving sop-8 package is attractive for "pocket?and "hand held" appli- cations. these rugged devices have both thermal shutdown, and current fold-back to prevent device failure under the "worst" of operating conditions. the ame8841 is stable with an output capacitance of 2.2 m f or greater. l instrumentation l portable electronics l wireless devices l cordless phones l pc peripherals l battery powered widgets l electronic scales n general description n features n applications amp gnd out in r1 r2 v ref =1.215v overcurrent shutdown thermal shutdown en ame8841 out in c2 2.2 m f c1 1 m f gnd out 5v en in
ame 2 600ma cmos ldo ame8841 rev.h.02 n pin configuration ame8841 1. out 2. in 3. gnd 4. out 5. nc 6. nc 7. en 8. nc * die attach: non-conductive epoxy sop-8 top view 1 3 2 4 ame8841 5 6 7 8 n ordering information operating ambient temperature range number of pins package type special feature ame8841 x x x x x a: 3.3v 1: 1.3v e: -40 o c to +85 o c h: sop a: 8 z: lead free b: 3.0v 2: 2.0v c: 2.8v 3: 4.2v d: 2.5v 4: 4.0v e: 3.8v f: 3.6v g: 3.5v h: 2.7v i: 3.4v j: 2.85v k: 3.7v l: 1.5v m: 1.8v n: 2.9v o: 3.1v p: 4.1v q: 4.75v r: 2.65v s: 5.0v u: 3.2v v: 3.15v w: 2.3v y: 1.9v z: 1.7v special feature product grade or option operating ambient temperature range package type number of pins product grade or option
ame 3 ame8841 600ma cmos ldo rev.h.02 n ordering information (contd.) note: yyww represents the date code * a line on top of the first character represents lead free plating such as 8841 please consult ame sales office or authorized rep./distributor for the availability of output voltage and package type. part number marking* output voltage package operating ambient temperature range ame8841aeha 8841 aeha yyww 3.3v sop-8 - 40 o c to + 85 o c ame8841aehaz 8841 aeha yyww 3.3v sop-8 - 40 o c to + 85 o c ame8841beha 8841 beha yyww 3.0v sop-8 - 40 o c to + 85 o c ame8841behaz 8841 beha yyww 3.0v sop-8 - 40 o c to + 85 o c ame8841ceha 8841 ceha yyww 2.8v sop-8 - 40 o c to + 85 o c ame8841cehaz 8841 ceha yyww 2.8v sop-8 - 40 o c to + 85 o c ame8841deha 8841 deha yyww 2.5v sop-8 - 40 o c to + 85 o c ame8841dehaz 8841 deha yyww 2.5v sop-8 - 40 o c to + 85 o c ame8841eeha 8841 eeha yyww 3.8v sop-8 - 40 o c to + 85 o c ame8841eehaz 8841 eeha yyww 3.8v sop-8 - 40 o c to + 85 o c ame8841feha 8841 feha yyww 3.6v sop-8 - 40 o c to + 85 o c ame8841fehaz 8841 feha yyww 3.6v sop-8 - 40 o c to + 85 o c
ame 4 600ma cmos ldo ame8841 rev.h.02 n ordering information (contd.) part number marking* output voltage package operating ambient temperature range ame8841geha 8841 geha yyww 3.5v sop-8 - 40 o c to + 85 o c ame8841gehaz 8841 geha yyww 3.5v sop-8 - 40 o c to + 85 o c ame8841heha 8841 heha yyww 2.7v sop-8 - 40 o c to + 85 o c ame8841hehaz 8841 heha yyww 2.7v sop-8 - 40 o c to + 85 o c ame8841ieha 8841 ieha yyww 3.4v sop-8 - 40 o c to + 85 o c ame8841iehaz 8841 ieha yyww 3.4v sop-8 - 40 o c to + 85 o c ame8841jeha 8841 jeha yyww 2.85v sop-8 - 40 o c to + 85 o c ame8841jehaz 8841 jeha yyww 2.85v sop-8 - 40 o c to + 85 o c ame8841keha 8841 keha yyww 3.7v sop-8 - 40 o c to + 85 o c ame8841kehaz 8841 keha yyww 3.7v sop-8 - 40 o c to + 85 o c ame8841leha 8841 leha yyww 1.5v sop-8 - 40 o c to + 85 o c AME8841LEHAZ 8841 leha yyww 1.5v sop-8 - 40 o c to + 85 o c
ame 5 ame8841 600ma cmos ldo rev.h.02 n ordering information part number marking* output voltage package operating ambient temperature range ame8841meha 8841 meha yyww 1.8v sop-8 - 40 o c to + 85 o c ame8841mehaz 8841 meha yyww 1.8v sop-8 - 40 o c to + 85 o c ame8841neha 8841 neha yyww 2.9v sop-8 - 40 o c to + 85 o c ame8841nehaz 8841 neha yyww 2.9v sop-8 - 40 o c to + 85 o c ame8841oeha 8841 oeha yyww 3.1v sop-8 - 40 o c to + 85 o c ame8841oehaz 8841 oeha yyww 3.1v sop-8 - 40 o c to + 85 o c ame8841reha 8841 reha yyww 2.65v sop-8 - 40 o c to + 85 o c ame8841rehaz 8841 reha yyww 2.65v sop-8 - 40 o c to + 85 o c
ame 6 600ma cmos ldo ame8841 rev.h.02 n absolute maximum ratings n recommended operating conditions n thermal information caution: stress above the listed absolute maximum rating may cause permanent damage to the device. * hbm b:2000v~3999v parameter maximum unit input voltage 8 v output current p d / (v in - v o ) a input, output voltage gnd - 0.3 to v in + 0.3 v esd classification b* 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 package die attach symbol maximum unit thermal resistance (junction to ambient) q ja 124 o c / w internal power dissipation p d 810 mw maximum junction temperature 150 o c solder iron(10 sec)* 350 o c non-conductive epoxy so-8 * mil-std-202g 210f
ame 7 ame8841 600ma cmos ldo rev.h.02 n electrical specifications parameter symbol min typ max units input voltage v in note 1 7 v output voltage accuracy v o -1.5 1.5 % 1.3v<= v o(nom) <=1.4v 1900 1.4v=4.0v -0.4 0.2 0.4 load regulation reg load -1 0.2 1 % over temperature shutdown ots 150 o c over temperature hysterisis oth 30 o c v o temperature coefficient tc 30 ppm/ o c f =100hz 60 f =1khz 50 f =10khz 20 v eh 2.0 vin v v el 0 0.4 v i eh 0.1 m a i el 0.5 m a shutdown supply current i sd 0.5 1 m a mvrms co=2.2 m f 30 i o =1ma mv % see chart reg line db v o >1.2v v o >1.2v i o =1ma to 600ma i o =0ma i o =1ma to 600ma i o =1ma v in =v o +1 to v o +2 test condition en f=10hz to 100khz i o =10ma,c byp =0 m f line regulation v o <0.8v v en =0v, v in =2.7v to 7v v en =v in , v in =2.7v to 7v v in =2.7v to 7v v in =2.7v to 7v dropout voltage v dropout i o =600ma v o =v o(nom) -2.0% v in =5v, v o =0v, v en ame 8 600ma cmos ldo ame8841 rev.h.02 the ame8841 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 600ma. during thermal shutdown, the output voltage remains low. normal operation is re- stored when the junction temperature drops below 110 o c. the ame8841 switches from voltage mode to current mode when the load exceeds the rated output current. this prevents over-stress. the ame8841 also incorpo- rates current foldback to reduce power dissipation when the output is short circuited. this feature becomes ac- tive when the output drops below 0.8 volts, and reduces the current flow by 65%. full current is restored when the voltage exceeds 0.8 volts. n detailed description n external capacitors the ame8841 is stable with an output capacitor to ground of 2.2 m f or greater. ceramic capacitors have the lowest esr, and will offer the best ac performance. con- versely, aluminum electrolytic capacitors exhibit the high- est esr, resulting in the poorest ac response. unfortu- nately, large value ceramic capacitors are comparatively expensive. one option is to parallel a 0.1 m f ceramic capacitor with a 10 m f aluminum electrolytic. the benefit is low esr, high capacitance, and low overall cost. a second capacitor is recommended between the in- put and ground to stabilize vin. the input capacitor should be at least 0.1 m f to have a beneficial effect. all capacitors should be placed in close proximity to the pins. a "quiet" ground termination is desirable. this can be achieved with a "star" connection. n enable the enable pin normally floats high. when actively, pulled low, the pmos pass transistor shuts off, and all internal circuits are powered down. in this state, the qui- escent current is less than 1 m a. this pin behaves much like an electronic switch.
ame 9 ame8841 600ma cmos ldo rev.h.02 ground current vs. input voltage load step (1ma-600ma) drop out voltage vs. output voltage power supply rejection ratio safe operating area noise measurement time (20ms/div) v o ( 1 m v d i v ) c l =2.2 m f no filter 10 100 600 0.1 1.0 8.0 o u t p u t c u r r e n t ( m a ) input-output voltage differential (v) 8807aeha 8841aeha p s r r ( d b ) 100ma 10ma 1ma 100 m a 100ma 100 m a c l =2.2 m f tantalum c byp =0 -80 -70 -60 -50 -40 -30 -20 -10 0 10 1k 100k frequency (hz) 10m g r o u n d c u r r e n t ( m a ) input voltage (v) 0 5 10 15 20 25 30 35 40 45 0 1 2 3 4 5 6 7 8 85 o c 25 o c tantalum time (20ms/div) i l ( 2 0 0 m a / d i v ) v o ( 1 0 m v / d i v ) i load output c l =2.2 m f cin=2.2 m f 0 0 200 400 600 800 1000 1200 1 2 3 4 5 6 i load =600ma d r o p o u t v o l t a g e ( m v ) output voltage (v)
ame 10 600ma cmos ldo ame8841 rev.h.02 short circuit response overtemperature shutdown current limit response chip enable transient response line transient response quiescent current vs. temp. q u i e s c e n t c u r r e n t ( u a ) temperature ( o c) 26 28 30 32 34 36 38 40 -20 0 20 40 60 80 v o u t ( 1 0 m v / d i v ) v i n ( 1 v / d i v ) c load =2.2 m f i load =1ma v outdc =3.3v v indc =4.5v time (200ms/div) time (2ms/div) c load =2.2 m f c in =1 m f r load <100m w v o u t ( 1 v / d i v ) i o u t ( 2 0 0 m v / d i v ) i o u t ( 2 0 0 m a / d i v ) v o u t ( 1 v / d i v ) time (2ms/div) c load =2.2 m f c in =1.0 m f r load =3.3 w v outnom =3.3v v o u t ( 1 v / d i v ) i o u t ( 2 0 0 m a / d i v ) time (0.5sec/div) 0 0 r load =6.6 w 0 0 time (1ms/div) c l =2 m f r l =10 w o u t p u t ( 1 v / d i v ) e n a b l e ( 2 v / d i v )
ame 11 ame8841 600ma cmos ldo rev.h.02 load regulation vs. temp. en pin vs. temp. shut down current vs. temp. dropout voltage vs. temp. v out vs. temp. 0.30 0.35 0.40 0.45 0.50 0.55 -20 0 20 40 60 80 l o a d r e g u l a t i o n ( % ) temperature ( o c) 2.620 2.625 2.630 2.635 2.640 2.645 2.650 2.655 2.660 -20 0 20 40 60 80 v o u t @ v i n = v o u t + 2 v ( v ) temperature ( o c) 360 380 400 420 440 460 480 500 -20 0 20 40 60 80 d r o p o u t v o l t a g e @ 6 0 0 m a ( m v ) temperature ( o c) 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 -20 0 20 40 60 80 s h u t d o w n c u r r e n t ( u a ) temperature ( o c) -0.50 -0.45 -0.40 -0.35 -0.30 -0.25 -0.20 -20 0 20 40 60 80 e n p i n l o b i a s c u r r e n t ( u a ) temperature ( o c)
ame 12 600ma cmos ldo ame8841 rev.h.02 n tape and reel dimension carrier tape, number of components per reel and reel size sop-8 package carrier width (w) pitch (p) part per full reel reel size sop-8 12.00.1 mm 4.00.1 mm 2500pcs 3301 mm pin 1 w p a m e a m e
ame 13 ame8841 600ma cmos ldo rev.h.02 n package dimension sop-8 7 o ( 4 x ) top view side view front view d e a a 2 a 1 e b h c l c pin 1 min max min max a 1.35 1.75 0.05315 0.0689 a 1 0.10 0.30 0.00394 0.01181 a2 b 0.33 0.51 0.01299 0.02008 c 0.19 0.25 0.00748 0.00984 d 4.80 5.33 0.18898 0.20984 e 3.80 4.00 0.14961 0.15748 e l 0.40 1.27 0.01575 0.05000 h 5.80 6.30 0.22835 0.24803 y - 0.10 - 0.00394 q 0 o 8 o 0 o 8 o symbols millimeters inches 1.473 ref 0.05799 ref 1.27 bsc 0.05000 bsc
life support policy: these products of ame, inc. are not authorized for use as critical components in life-support devices or sys- tems, 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. , november 2008 document: 2006/2095-ds8841-h.02 corporate headquarter ame, inc. 2f, no. 302 rui-guang road, nei-hu dist. taipei 114 taiwan. tel : 886 2 2627-8687 fax: 886 2 2659-2989 www.ame.com.tw e-mail: sales@ame.com.tw

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