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ame 1 ame8808 750ma cmos ldo rev.g.02 n typical application n functional block diagram l very low dropout voltage l guaranteed 750ma 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 space-saving sot-223 and to-252-2 packages l factory pre-set output voltages l low temperature coefficient the ame8808 family of positive, linear regulators fea- ture low quiescent current (30 m a typ.) with low dropout voltage, making them ideal for battery applications. the space-saving sot-223 and to-252-2 packages are at- tractive for "pocket" and "hand held" applications. these rugged devices have both thermal shutdown, and current fold-back to prevent device failure under the "worst" operating conditions. the ame8808 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 n general description n features n applications 2.2 m f ame8808 out in c2 c1 1 m f in gnd out 5v overcurrent shutdown thermal shutdown amp gnd out in r1 r2 v ref =1.215v l all ame' s lead free products meet rohs standards
ame 2 750ma cmos ldo ame8808 rev.g.02 ? pin configuration ame8808 1. gnd 2. out (tab) 3. in * die attach: non-conductive epoxy sot-223 top view to-252-2 top view ame8808 1. gnd 2. out (tab) 3. in * die attach: non-conductive epoxy 13 2 ame8808 ? pin description pin number pin name pin description 1 gnd ground connection pin. 2out ldo voltage regulator output pin. it should be decoupled with a 1f or greater value low esr ceramic capacitor. 3in input voltage pin. it should be decoupled with 1 f or greater capacitor. 1 3 2 ame8808
ame 3 ame8808 750ma cmos ldo rev.g.02 n ordering information operating ambient temperature range number of pins package type product grade or option special feature ame8808 x x x x x a: 3.3v 1: 1.3v e: -40 o c to +85 o c c: to-252 s: 2 z: lead free b: 3.0v 2: 2.0v g: sot-223 t: 3 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
ame 4 750ma cmos ldo ame8808 rev.g.02 n ordering information note: yww & yyww represents the date code * a line on top of the first letter represents lead free plating such as aet please consult ame sales office or authorized rep./distributor for output voltage and package type availability. part number marking* output voltage package operating ambient temperature range ame8808aegt aetyww 3.3v sot-223 - 40 o c to +85 o c ame8808aegtz aetyww 3.3v sot-223 - 40 o c to +85 o c ame8808begtz aeuyww 3.0v sot-223 - 40 o c to +85 o c ame8808cegtz aevyww 2.8v sot-223 - 40 o c to +85 o c ame8808degtz aewyww 2.5v sot-223 - 40 o c to +85 o c ame8808eegtz aexyww 3.8v sot-223 - 40 o c to +85 o c ame8808fegtz aeyyww 3.6v sot-223 - 40 o c to +85 o c ame8808gegtz aezyww 3.5v sot-223 - 40 o c to +85 o c ame8808hegtz afayww 2.7v sot-223 - 40 o c to +85 o c ame8808iegtz afbyww 3.4v sot-223 - 40 o c to +85 o c ame8808jegtz aguyww 2.85v sot-223 - 40 o c to +85 o c ame8808kegtz ahwyww 3.7v sot-223 - 40 o c to +85 o c ame8808legtz ajgyww 1.5v sot-223 - 40 o c to +85 o c ame8808megtz ajhyww 1.8v sot-223 - 40 o c to +85 o c ame8808negtz akuyww 2.9v sot-223 - 40 o c to +85 o c ame8808oegtz akvyww 3.1v sot-223 - 40 o c to +85 o c ame8808aecsz ame8808 aecs yyww 3.3v to-252-2 - 40 o c to +85 o c ame8808becsz ame8808 becs yyww 3.0v to-252-2 - 40 o c to +85 o c ame8808cecsz ame8808 cecs yyww 2.8v to-252-2 - 40 o c to +85 o c
ame 5 ame8808 750ma cmos ldo rev.g.02 n ordering information (contd.) part number marking* output voltage package operating ambient temperature range ame8808decsz ame8808 decs yyww 2.5v to-252-2 - 40 o c to +85 o c ame8808eecs z ame8808 eecs yyww 3.8v to-252-2 - 40 o c to +85 o c ame8808fecs z ame8808 fecs yyww 3.6v to-252-2 - 40 o c to +85 o c ame8808gecs z ame8808 gecs yyww 3.5v to-252-2 - 40 o c to +85 o c ame8808hecs z ame8808 hecs yyww 2.7v to-252-2 - 40 o c to +85 o c ame8808iecs z ame8808 iecs yyww 3.4v to-252-2 - 40 o c to +85 o c ame8808jecsz ame8808 jecs yyww 2.85v to-252-2 - 40 o c to +85 o c ame8808kecs z ame8808 kecs yyww 3.7v to-252-2 - 40 o c to +85 o c ame8808lecsz ame8808 lecs yyww 1.5v to-252-2 - 40 o c to +85 o c ame8808mecsz ame8808 mecs yyww 1.8v to-252-2 - 40 o c to +85 o c ame8808necsz ame8808 necs yyww 2.9v to-252-2 - 40 o c to +85 o c ame8808oecsz ame8808 oecs yyww 3.1v to-252-2 - 40 o c to +85 o c
ame 6 750ma cmos ldo ame8808 rev.g.02 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: 2000~3999v n thermal information parameter package die attach symbol maximum unit sot-223 31 to-252-2 30 sot-223 135 to-252-2 140 sot-223 800 to-252-2 1000 150 o c 350 o c maximum junction temperature solder iron (10 sec)** internal power dissipation non conductive epoxy mw o c / w p d q jc thermal resistance ( junction to ambient) q ja thermal resistance* ( junction to case) * measure q jc on backside center of 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 +8 v output voltage -0.3 to v in + 0.3 v output current p d / (v in - v out ) ma esd classification b*
ame 7 ame8808 750ma cmos ldo rev.g.02 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 1.4v1.2v v o >1.2v v o <0.8v i o =0ma i o =1ma to 750ma power supply rejection psrr i o =100ma c o =2.2mf mvrms output voltage noise en f=10hz to 100khz i o =10ma,c byp =0mf co=2.2mf 30 i o =1ma to 750ma db n electrical specifications t a = 25 o c unless otherwise noted note1:v in(min) =v out +v dropout
ame 8 750ma cmos ldo ame8808 rev.g.02 the ame8808 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 750ma. during thermal shutdown, the output voltage remains low. normal operation is re- stored when the junction temperature drops below 120 o c. the ame8808 switches from voltage mode to current mode when the load exceeds the rated output current. this prevents over-stress. the ame8808 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 ame8808 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.
ame 9 ame8808 750ma cmos ldo rev.g.02 ground current vs. input voltage load step (1ma-600ma) drop out voltage vs. output voltage power supply rejection ratio line transient response safe operating area 0 0.05 0.1 0.15 0.2 0.25 0.3 2 2.5 3 3.5 4 4.5 5 5.5 i load =600ma drop out voltage (v) output voltage (v) output current (ma) input-output voltage differential (v) sot-223 dpak-2 75 o c rise with hs capable of twice q jc v out (10mv/div) v in (1v/div) time (200ms/div) c load =2.2 m f i load =1ma v outdc =3.3v v indc =4.5v ground current ( 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 psrr (db) 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 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
ame 10 750ma cmos ldo ame8808 rev.g.02 short circuit response overtemperature shutdown current limit response noise measurement time (20ms/div) vo (1mv div) c l =2.2 m f no filter v out (1v/div) i out (200ma/div) time (0.5sec/div) 0 0 r load =6.6 w i out (200ma/div) v out (1v/div) time (2ms/div) c load =2.2 m f c in =1.0 m f r load =3.3 w v outnom =3.3v time (2ms/div) c load =2.2 m f c in =1 m f r load <100m w v out (1v/div) i out (200mv/div)
ame 11 ame8808 750ma cmos ldo rev.g.02 n tape & reel dimension package carrier width (w) pitch (p) part per full reel reel size sot-223 12.00.1 mm 4.00.1 mm 2500pcs 3301 mm carrier tape, number of components per reel and reel size sot-223 w p pin 1 ame ame package carrier width (w) pitch (p) part per full reel reel size to-252-2 16.00.1 mm 4.00.1 mm 2500pcs 3301 mm w p pin 1 carrier tape, number of components per reel and reel size ame ame to-252-2
ame 12 750ma cmos ldo ame8808 rev.g.02 min max min max a 0.43 0.58 0.0169 0.0230 b 1.60 1.95 0.0630 0.0768 c 0.51 1.78 0.0200 0.0701 d 0.43 0.60 0.0169 0.0236 e 6.35 6.80 0.2500 0.2677 f 5.36 7.20 0.2110 0.2835 g 2.20 3.00 0.0866 0.1181 h - * 2.30 - *0.0906 j - 0.97 - 0.0380 k 5.20 5.50 0.2047 0.2165 l 1.40ref 0.055ref symbols millimeters inches n package dimension to-252-2(dpak)-eiaj *: typical value notes: 1. controlling dimension: millimeters. 2. maximum lead thickness includes lead finish thickness mini- mum lead thickness is the minimum thickness of base material. c g f l top view side view e k b a d h j sot-223 c 13 o (4x) top view side view c d b1 h e e a1 b 13 o (4x) front view f min max min max a 1 0.01 0.10 0.0004 0.0039 b 0.60 0.84 0.0236 0.0330 b 1 2.90 3.15 0.1140 0.1240 c 0.24 0.38 0.0094 0.0150 d 6.30 6.71 0.2480 0.2640 e 3.30 3.71 0.1299 0.1460 f 1.40 1.80 0.0551 0.0709 e h 6.70 7.30 0.2638 0.2874 q 0 o 10 o 0 o 10 o 2.30 bsc 0.0906 bsc millimeters inches symbols
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. , november 2008 document: 2006/2095-ds8808-g.02 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

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