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analog microelectronics, inc. 1 ame8806 / 8809 / 8842 600ma cmos ldo n n n n n typical application n n n n n functional block diagram n n n n n features 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 noise reduction bypass capacitor l power-saving shutdown mode l space-saving so-8 package l factory pre-set output voltages l low temperature coefficient n n n n n general description the ame8806/8809 family of positive, linear regula- tors feature low quiescent current (30 m a typ.) with low dropout voltage, making them ideal for battery applica- tions. the space-saving so-8 package is attractive for "pocket" and "hand held" applications. these rugged devices have both thermal shutdown, and current fold-back to prevent device failure under the "worst" of operating conditions. in applications requiring a low noise, regulated supply, place a 1000 pf capacitor between bypass and ground. the ame8806/8809 is stable with an output capacitance of 2.2 m f or greater. n n n n n applications l instrumentation l portable electronics l wireless devices l cordless phones l pc peripherals l battery powered widgets l electronic scales ame8806 ame8809 out in c3 2.2 m f c1 1 m f gnd out 5v en byp in c2 1 m f amp gnd out in r1 r2 v ref =1.215v byp overcurrent shutdown thermal shutdown en
analog microelectronics, inc. 2 600ma cmos ldo ame8806 / 8809 / 8842 n n n n n pin configuration so-8 top view so-8 top view byp in gnd gnd gnd gnd out en gnd en in out gnd gnd gnd bp ame8806 ame8809 ame8842 pg in out gnd gnd gnd en gnd
analog microelectronics, inc. 3 ame8806 / 8809 / 8842 600ma cmos ldo n n n n n ordering information part number marking output package operating temp. AME8806AEHA 8806 aeha yyww 3.3v so-8 -40 o c to +85 o c ame8806beha 8806 beha yyww 3.0v so-8 -40 o c to +85 o c ame8806ceha 8806 ceha yyww 2.8v so-8 -40 o c to +85 o c ame8806deha 8806 deha yyww 2.5v so-8 -40 o c to +85 o c ame8806eeha 8806 eeha yyww 3.8v so-8 -40 o c to +85 o c ame8806feha 8806 feha yyww 3.6v so-8 -40 o c to +85 o c ame8806geha 8806 geha yyww 3.5v so-8 -40 o c to +85 o c ame8806heha 8806 heha yyww 2.7v so-8 -40 o c to +85 o c ame8806ieha 8806 ieha yyww 3.4v so-8 -40 o c to +85 o c ame8806jeha 8806 jeha yyww 2.85v so-8 -40 o c to +85 o c ame8806keha 8806 keha yyww 3.7v so-8 -40 o c to +85 o c ame8806leha 8806 leha yyww 1.5v so-8 -40 o c to +85 o c ame8806meha 8806 meha yyww 1.8v so-8 -40 o c to +85 o c ame8806neha 8806 neha yyww 2.9v so-8 -40 o c to +85 o c ame8806oeha 8806 oeha yyww 3.1v so-8 -40 o c to +85 o c
analog microelectronics, inc. 4 600ma cmos ldo ame8806 / 8809 / 8842 n n n n n ordering information part number marking output package operating temp. ame8809aeha 8809 aeha yyww 3.3v so-8 -40 o c to +85 o c ame8809beha 8809 beha yyww 3.0v so-8 -40 o c to +85 o c ame8809ceha 8809 ceha yyww 2.8v so-8 -40 o c to +85 o c ame8809deha 8809 deha yyww 2.5v so-8 -40 o c to +85 o c ame8809eeha 8809 eeha yyww 3.8v so-8 -40 o c to +85 o c ame8809feha 8809 feha yyww 3.6v so-8 -40 o c to +85 o c ame8809geha 8809 geha yyww 3.5v so-8 -40 o c to +85 o c ame8809heha 8809 heha yyww 2.7v so-8 -40 o c to +85 o c ame8809ieha 8809 ieha yyww 3.4v so-8 -40 o c to +85 o c ame8809jeha 8809 jeha yyww 2.85v so-8 -40 o c to +85 o c ame8809keha 8809 keha yyww 3.7v so-8 -40 o c to +85 o c ame8809leha 8809 leha yyww 1.5v so-8 -40 o c to +85 o c ame8809meha 8809 meha yyww 1.8v so-8 -40 o c to +85 o c ame8809neha 8809 neha yyww 2.9v so-8 -40 o c to +85 o c ame8809oeha 8809 oeha yyww 3.1v so-8 -40 o c to +85 o c please consult ame sales office or authorized rep./distributor for other output voltage and package type availability.
analog microelectronics, inc. 5 ame8806 / 8809 / 8842 600ma cmos ldo n n n n n ordering information part number marking output package operating temp. ame8842aeha 8842 aeha yyww 3.3v so-8 -40 o c to +85 o c ame8842beha 8842 beha yyww 3.0v so-8 -40 o c to +85 o c ame8842ceha 8842 ceha yyww 2.8v so-8 -40 o c to +85 o c ame8842deha 8842 deha yyww 2.5v so-8 -40 o c to +85 o c ame8842eeha 8842 eeha yyww 3.8v so-8 -40 o c to +85 o c ame8842feha 8842 feha yyww 3.6v so-8 -40 o c to +85 o c ame8842geha 8842 geha yyww 3.5v so-8 -40 o c to +85 o c ame8842heha 8842 heha yyww 2.7v so-8 -40 o c to +85 o c ame8842ieha 8842 ieha yyww 3.4v so-8 -40 o c to +85 o c ame8842jeha 8842 jeha yyww 2.85v so-8 -40 o c to +85 o c ame8842keha 8842 keha yyww 3.7v so-8 -40 o c to +85 o c ame8842leha 8842 leha yyww 1.5v so-8 -40 o c to +85 o c ame8842meha 8842 meha yyww 1.8v so-8 -40 o c to +85 o c ame8842neha 8842 neha yyww 2.9v so-8 -40 o c to +85 o c ame8842oeha 8842 oeha yyww 3.1v so-8 -40 o c to +85 o c please consult ame sales office or authorized rep./distributor for other output voltage and package type availability.
analog microelectronics, inc. 6 600ma cmos ldo ame8806 / 8809 / 8842 n n n n n absolute maximum ratings n n n n n recommended operating conditions n n n n n thermal information caution: stress above the listed absolute rating may cause permanent damage to the device 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 rating unit ambient temperature range -40 to +85 o c junction temperature -40 to +125 o c parameter maximum unit thermal resistance ( q ja ) 123.7 o c / w internal power dissipation (p d ) ( d t = 100 o c) 810 mw maximum junction temperature 150 o c maximum lead temperature ( 10 sec) 300 o c
analog microelectronics, inc. 7 ame8806 / 8809 / 8842 600ma cmos ldo n n n n n electrical specifications parameter symbol min typ max units input voltage v in note 1 8 v output voltage accuracy v o -1.5 1.5 % 1.5v= 2.0v 0.02 0.1 % load regulation reg load 0.2 1 % over temerature shutdown ots 150 o c over temerature hysterisis oth 30 o c v o temperature coefficient tc 30 ppm/ o c f=1khz 75 psrr f=10khz 55 db f=100khz 30 co=2.2 m f30 co=100 m f20 v eh 2.0 vin v v el 00.4v i eh 0.1 m a i el 0.5 m a shutdown supply current i sd 0.5 1 m a note1:v in(min) =v out +v dropout en input bias current v en =v in , v in =2.7v to 8v v en =0v, v in =2.7v to 8v v in =5v, v o =0v, v en 1.2v v o >1.2v line regulation reg line i o =5ma v in =v o +1 to v o +2 ta = 25 o c unless otherwise noted test condition i o =1ma i o =600ma v o =v onom -2.0% v o <0.8v i o =0ma
analog microelectronics, inc. 8 600ma cmos ldo ame8806 / 8809 / 8842 n n n n n detailed description the ame8806/8809 family of cmos regulators con- tain a pmos pass transistor, voltage reference, error amplifier, over-current protection, and thermal shut- down. the p-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal pro- tection circuits. during normal operation, the error am- plifier compares the output voltage to a precision refer- ence. over-current and thermal shutdown circuits be- come active when the junction temperature exceeds 150 o c, or the current exceeds 600ma. during thermal shutdown, the output voltage remains low. normal op- eration is restored when the junction temperature drops below 120 o c. the ame8806/8809 switches from voltage mode to cur- rent mode when the load exceeds the rated output cur- rent. this prevents over-stress. the ame8806/8809 also incorporates current foldback to reduce power dis- sipation when the output is short circuited. this feature becomes active 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. a third capacitor can be connected between the by- pass pin and gnd. this capacitor can be a low cost polyester film variety between the value of 0.001 ~ 0.01 m f. a larger capacitor improves the ac ripple re- jection, but also makes the output come up slowly. this "soft" turn-on is desirable in some applications to limit turn-on surges. 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 n n n n external capacitors the ame8806/8809 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. conversely, aluminum electrolytic capacitors exhibit the highest esr, resulting in the poorest ac response. unfortunately, large value ceramic capacitors are com- paratively 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 over- all cost. a second capacitor is recommended between the input and ground to stabilize vin. the input capacitor should be at least 0.1 m f to have a beneficial effect. n n n n 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 quiescent current is less than 1 m a. this pin behaves much like an electronic switch.
analog microelectronics, inc. 9 ame8806 / 8809 / 8842 600ma cmos ldo load step ( 1ma-600ma) time ( 20ms/div) i l (200ma/div) vo(10mv/div) i load output c l =2.2 m f cin=2.2 m f 0 0 0.05 0.1 0.15 0.2 0.25 0.3 22.5 33.5 44.5 55.5 i load =600ma drop out voltage vs. output voltage drop out voltage (v) output voltage (v) 0 5 10 15 20 25 30 35 40 45 012345678 ground current vs. input voltage ground current ( m m m m a) input voltage (v) 85 o c 25 o c -80 -70 -60 -50 -40 -30 -20 -10 0 1.0e+01 1.0e+03 1.0e+05 1.0e+07 power supply rejection ratio psrr (db) frequency (hz) 100ma 10ma 1ma 100 m a 100ma 100 m a c l =2.2 m f tantalum c byp =0 10 100 600 0.1 1.0 8.0 safe operating area output current (ma) input-output voltage differential (v) -80 -70 -60 -50 -40 -30 -20 1.0e+01 1.0e+03 1.0e+05 1.0e+07 power supply rejection ratio psrr (db) frequency (hz) c l =2.2 m f tantalum c byp =1000pf 100ma 100 m a 1ma 10ma 100ma 100 m a
analog microelectronics, inc. 10 600ma cmos ldo ame8806 / 8809 / 8842 short circuit response v out (1v/div) i out (200mv/div) time (2ms/div) c load =2.2 m f c in =1 m f r load <100m w line transient response v out (10mv/div) v in (1v/div) c load =2.2 m f i load =1ma v outdc =3.3v v indc =4.5v time (200ms/div) current limit response 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 overtemperature shutdown v out (1v/div) i out (200ma/div) time (0.5sec/div) r load =6.6 w 0 0 0 0 chip enable transient response time ( 1ms/div) c l =2 m f r l =10 w output (1v/div) enable (2v/div) noise measurement time (20ms/div) vo (1mv/ div) c l = 2.2 m f no filter
analog microelectronics, inc. 11 ame8806 / 8809 / 8842 600ma cmos ldo n n n n n package dimension so-8 q min max min max a 1.35 1.75 0.053 0.069 a 1 0.10 0.25 0.004 0.010 a2 b 0.33 0.51 0.013 0.020 c 0.19 0.25 0.007 0.010 d 4.80 5.00 0.189 0.1970 e 3.80 4.00 0.150 0.157 e h 5.80 6.20 0.228 0.244 l 0.40 1.27 0.016 0.050 y 0.10 0.004 q q q q 0 8 0 8 symbols millimeters inches
life support policy: these products of analog microelectronics, inc. are not authorized for use as critical components in life- support devices or systems, without the express written approval of the president of analog microelectronics, inc. analog microelectronics, 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. ? analog microelectronics, inc., august 2001 document: 2006-ds8806/8809-d corporate headquarters asia pacific headquarters analog microelectronics, inc. ame, inc. 3100 de la cruz blvd. suite 201 2f, 187 kang-chien road, nei-hu district santa clara, ca. 95054-2046 taipei 114, taiwan, r.o.c. tel : (408) 988-2388 tel : 886 2 2627-8687 fax: (408) 988-2489 fax : 886 2 2659-2989 www.analogmicro.com e-mail: info@analogmicro.com

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