View AME8808IEGT_3908292.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

analog microelectronics, inc. 1 ame8808 750ma 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 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 dpak-2 package l factory pre-set output voltages l low temperature coefficient n n n n n general description the ame8808 family of positive, linear regulators feature low quiescent current (30 m a typ.) with low dropout volt- age, making them ideal for battery applications. the space-saving sot-223 and dpak-2 packages are attrac- tive 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. the ame8808 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 ame8808 out in c2 2.2 m f c1 1 m f in gnd out 5v overcurrent shutdown thermal shutdown amp gnd out in r1 r2 v ref =1.215v
analog microelectronics, inc. 2 750ma cmos ldo ame8808 part number marking output voltage package operating temp. range ame8808aegt aetyww 3.3v sot-223 -40 o c to +85 o c ame8808begt aeuyww 3.0v sot-223 -40 o c to +85 o c ame8808cegt aevyww 2.8v sot-223 -40 o c to +85 o c ame8808degt aewyww 2.5v sot-223 -40 o c to +85 o c ame8808eegt aexyww 3.8v sot-223 -40 o c to +85 o c ame8808fegt aeyyww 3.6v sot-223 -40 o c to +85 o c ame8808gegt aezyww 3.5v sot-223 -40 o c to +85 o c ame8808hegt afayww 2.7v sot-223 -40 o c to +85 o c AME8808IEGT afbyww 3.4v sot-223 -40 o c to +85 o c ame8808jegt aguyww 2.85v sot-223 -40 o c to +85 o c ame8808kegt ahwyww 3.7v sot-223 -40 o c to +85 o c ame8808legt ajgyww 1.5v sot-223 -40 o c to +85 o c ame8808megt ajhyww 1.8v sot-223 -40 o c to +85 o c ame8808negt akuyww 2.9v sot-223 -40 o c to +85 o c ame8808oegt akvyww 3.1v sot-223 -40 o c to +85 o c please consult ame sales office or authorized rep./distributor for other output voltage and package type availability. n n n n n pin configuration n n n n n ordering information 1 23 sot-223 top view 1 23 dpak-2 top view 1. gnd 2. v out 3. v in 1. gnd 2. v out (connected with heat sink) 3. v in
analog microelectronics, inc. 3 ame8808 750ma cmos ldo n n n n n ordering information (contd.) part number marking output voltage package operating temp. range ame8808aecs ame8808 aecs yyww 3.3v dpak-2 -40 o c to +85 o c ame8808becs ame8808 becs yyww 3.0v dpak-2 -40 o c to +85 o c ame8808cecs ame8808 cecs yyww 2.8v dpak-2 -40 o c to +85 o c ame8808decs ame8808 decs yyww 2.5v dpak-2 -40 o c to +85 o c ame8808eecs ame8808 eecs yyww 3.8v dpak-2 -40 o c to +85 o c ame8808fecs ame8808 fecs yyww 3.6v dpak-2 -40 o c to +85 o c ame8808gecs ame8808 gecs yyww 3.5v dpak-2 -40 o c to +85 o c ame8808hecs ame8808 hecs yyww 2.7v dpak-2 -40 o c to +85 o c ame8808iecs ame8808 iecs yyww 3.4v dpak-2 -40 o c to +85 o c ame8808jecs ame8808 jecs yyww 2.85v dpak-2 -40 o c to +85 o c ame8808kecs ame8808 kecs yyww 3.7v dpak-2 -40 o c to +85 o c ame8808lecs ame8808 lecs yyww 1.5v dpak-2 -40 o c to +85 o c ame8808mecs ame8808 mecs yyww 1.8v dpak-2 -40 o c to +85 o c ame8808necs ame8808 necs yyww 2.9v dpak-2 -40 o c to +85 o c ame8808oecs ame8808 oecs yyww 3.1v dpak-2 -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. 4 750ma cmos ldo ame8808 n n n n n absolute maximum ratings n n n n n recommended operating conditions n n n n n thermal information parameter maximum unit input voltage 8 v output current 1 a input, output voltage gnd - 0.3 to v dd + 0.3 v esd classification b parameter rating unit supply voltage 4.5 to 5.5 v ambient temperature range -40 to +85 o c junction temperature -40 to +125 o c maximum unit sot-223 160 dpak-2 60 sot-223 625 dpak-2 3,000 150 o c 300 o c caution: stress above the listed absolute rating may cause permanent damage to the device parameter o c / w mw maximum lead temperature ( 10 sec) maximum junction temperature thermal resistance ( q jc ) internal power dissipation (p d ) ( d t = 100 o c)
analog microelectronics, inc. 5 ame8808 750ma 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 50 psrr f=10khz 20 db f=100khz 15 co=2.2mf 30 co=100mf 20 note1:v in(min) =v out +v dropout line regulation reg line i o =5ma v in =v o +1 to v o +2 i o =0ma i o =1ma to 750ma see chart mv i o =1ma to 750ma power supply rejection i o =100ma c o =2.2mf output voltage noise en f=10hz to 100khz i o =10ma,c byp =0mf mvrms ta = 25 o c unless otherwise noted test condition i o =1ma i o =750ma v o =v onom -2.0% v o >1.2v v o >1.2v v o <0.8v
analog microelectronics, inc. 6 750ma cmos ldo ame8808 n n n n n detailed description 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 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 750ma. during thermal shutdown, the output voltage remains low. normal op- eration is restored 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 incorporates current foldback to reduce power dissipation 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. 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. 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 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. 7 ame8808 750ma 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 safe operating area output current (ma) input-output voltage differential (v) sot-223 dpak-2 75 o c rise with hs capable of twice q jc 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)
analog microelectronics, inc. 8 750ma cmos ldo ame8808 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 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 noise measurement time (20ms/div) vo (1mv/ div) c l = 2.2 m f no filter
analog microelectronics, inc. 9 ame8808 750ma cmos ldo n n n n n package dimension to-252 (dpak) to-252 (dpak) min max min max a 0.45 0.58 0.0177 0.023 b 1.60 1.95 0.06 0.0768 c 0.51 - 0.02 - d 0.45 0.60 0.0177 0.0236 e 6.40 6.80 0.252 0.2677 f 5.40 5.80 0.2126 0.2283 g 2.20 2.85 0.0866 0.1122 h - * 2.30 - * 0.0906 i - 0.90 - 0.0354 j - 0.97 - 0.038 k 5.20 5.50 0.20 0.22 l 0.89 2.03 0.035 0.08 * : typical value notes : 1. controlling dimension : millimeters. 2. maximum lead thickness includes lead finish thickness minimum lead thickness is the minimum thickness of base material. symbols millimeters inches min max min max a 0.45 0.58 0.0177 0.023 b 1.60 1.95 0.06 0.0768 c 0.51 - 0.02 - d 0.45 0.60 0.0177 0.0236 e 6.40 6.80 0.252 0.2677 f 5.40 5.80 0.2126 0.2283 g 2.20 2.85 0.0866 0.1122 h - * 2.30 - * 0.0906 i - 0.90 - 0.0354 j - 0.97 - 0.038 k 5.20 5.50 0.20 0.22 l 0.89 2.03 0.035 0.08 * : typical value notes : 1. controlling dimension : millimeters. 2. maximum lead thickness includes lead finish thickness minimum lead thickness is the minimum thickness of base material. symbols millimeters inches
analog microelectronics, inc. 10 750ma cmos ldo ame8808 n n n n n package dimension sot-223 a min max min max a 1.50 1.80 0.0591 0.0709 a 1 0.02 0.10 0.0008 0.0039 b 0.60 0.838 0.0236 0.033 b 1 2.895 3.15 0.1140 0.1240 c 0.24 0.381 0.0094 0.0150 d 6.299 6.706 0.2480 0.2640 e 3.30 3.708 0.1299 0.1460 e e 1 h 6.70 7.30 0.2638 0.2874 l l 1 l 2 a a a a 0 10 0 10 0.91 min 0.0360 min 2.00 max 0.06 bsc 0.0024 bsc 0.0787 max 2.30 bsc 4.60 bsc 0.090 bsc 0.181 bsc millimeters inches symbols
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-ds8808-c 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

▲Up To Search▲

Price & Availability of AME8808IEGT

	To Download AME8808IEGT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .