View AME8843AEGT180Z_8677274.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ame 1 ame8843 750ma cmos ldo rev. a.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 package l factory pre-set output voltages l low temperature coefficient l all ame' s lead free products meet rohs standards the ame8843 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 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" operating conditions. the ame8843 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 overcurrent shutdown thermal shutdown amp gnd out in r1 r2 v ref =1.215v 2.2 m f ame8843 out in c2 c1 1 m f in gnd out 5v
ame 2 750ma cmos ldo ame8843 rev. a.02 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 out ldo voltage regulator output pin. it should be decoupled with a 2.2 f or greater value low esr ceramic capacitor. n pin configuration ame8843 1. in 2. gnd(tab) 3. out * die attach: conductive epoxy sot-223 top view n pin description 1 3 2 ame8843
ame 3 ame8843 750ma cmos ldo rev. a.02 n ordering information operating ambient temperature range number of pins package type pin configuration special feature ame8843 x x x x xxx x output voltage note: yww represents the date code * a line on top of the first character represents lead free plating such as awzww. please consult ame sales office or authorized rep./distributor for the availability of output voltage and package type. n ordering information part number marking* output voltage package operating ambient temperature range ame8843aegt180 awzyww 1.8v sot-223 - 40 o c to +85 o c AME8843AEGT180Z awzyww 1.8v sot-223 - 40 o c to+85 o c ame8843aegt250 awfyww 2.5v sot-223 - 40 o c to +85 o c ame8843aegt250z awfyww 2.5v sot-223 - 40 o c to +85 o c a: 1. in e: -40 o c to +85 o c g: sot-223 t: 3 180: v=1.8v z: lead free (sot-223) 2. gnd 250: v=2.5v 3. out special feature pin configuration output voltage operating ambient temperature range package type number of pins
ame 4 750ma cmos ldo ame8843 rev. a.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:2000v~3999v n thermal information parameter package die attach symbol maximum unit thermal resistance* ( junction to case) q jc 25 thermal resistance ( junction to ambient) q ja 120 internal power dissipation p d 900 mw 150 o c 350 o c o c / w maximum junction temperature solder iron (10 sec)** sot-223 conductive epoxy * 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 5 ame8843 750ma cmos ldo rev. a.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 test condition i o =1ma see chart mv line regulation reg line i o =1ma v in =v o +1 to v o +2 % dropout voltage v dropout i o =750ma v o =v o(nom) -2.0% n electrical specifications t a = 25 o c unless otherwise noted note1: v in(min) =v out +v dropout note2: to prevent the short circuit current protection feature from being prematurely activated, the input voltage must be applied before a current source load is applied.
ame 6 750ma cmos ldo ame8843 rev. a.02 the ame8843 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 ame8843 switches from voltage mode to current mode when the load exceeds the rated output current. this prevents over-stress. the ame8843 also incorpo- rates 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 detailed description n external capacitors the ame8843 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 ca- pacitor 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 7 ame8843 750ma cmos ldo rev. a.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 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 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 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 d r o p o u t v o l t a g e ( v ) output voltage (v) 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 o u t p u t c u r r e n t ( m a ) input-output voltage differential (v) sot-223 75 o c rise with hs capable of twice q jc 750 500 370 1.2 2 3 v o u t ( 1 0 m v / d i v ) v i n ( 1 v / d i v ) time (200ms/div) c load =2.2 m f i load =1ma v outdc =3.3v v indc =4.5v
ame 8 750ma cmos ldo ame8843 rev. a.02 short circuit response overtemperature shutdown current limit response noise measurement time (20ms/div) v o ( 1 m v d i v ) c l =2.2 m f no filter 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 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 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 )
ame 9 ame8843 750ma cmos ldo rev. a.02 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 n tape and reel dimension carrier tape, number of components per reel and reel size sot-223 w p pin 1 ame ame
ame 10 750ma cmos ldo ame8843 rev. a.02 n package dimension sot-223 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 c 13 o ( 4 x ) top view side view c d b 1 h e e a 1 b 13 o ( 4 x ) front view f pin 1
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: 2013-ds8843-a.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

▲Up To Search▲

Price & Availability of AME8843AEGT180Z

	To Download AME8843AEGT180Z Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .