pin configurations ordering information (top view) general description the rt9167/a is a 300ma/500ma low dropout and low noise micropower regulator suitable for portable applications. the output voltages range from 1.5v to 5.0v in 100mv increments and 2% accuracy. the rt9167/a is designed for use with very low esr capacitors. the output remains stable even with 1 f ceramic output capacitor. the rt9167/a us es an internal pmos as the pass device, which does not cause extra gnd current in heavy load and dropout conditions. the shutdown mode of nearly zero operation current makes the ic suitable for battery-powered devices. other features include a reference bypass pin to improve low noise performance, current limiting, and over temperature protection. marking information for marking information, contact our sales representative directly or through a richtek distributor located in your area, otherwise visit our website for detail. features z z z z z stable with low-esr output capacitor z z z z z low dropout voltage (350mv @ 300ma) z z z z z low operation current ? ? ? ? ? 80 a typical z z z z z shutdown function z z z z z low noise output z z z z z low temperature coefficient z z z z z current and thermal limiting z z z z z custom voltage available z z z z z sot-23-5 and sop-8 packages z z z z z rohs compliant and 100% lead (pb)-free applications z cellular telephones z laptop, notebook, and palmtop computers z battery-powered equipment z hand-held equipment sop-8 en vin vout bp gnd gnd gnd gnd 2 3 4 5 6 7 8 sot-23-5 (r-type) vout gnd vin en bp 2 3 5 4 1 vin gnd en bp vout 2 3 5 4 1 sot-23-5 rt9167/a- package type b : sot-23-5 br : sot-23-5 (r-type) s : sop-8 output voltage 15 : 1.5v 16 : 1.6v : 49 : 4.9v 50 : 5.0v 2h : 2.85v 500ma output current 300ma output current operating temperature range p : pb free with commercial standard g : green (halogen free with commer- cial standard) 1 of 4 4008-318-123 sales@twtysemi.com product specification rt9167/a
function block diagram typical application circuit functional pin description pin name pin function vin power input voltage gnd ground en chip enable (active high) bp reference noise bypass vout output voltage in gnd out rt9167/a + + c out 1uf c in 1uf v in v out en bp c bp 10nf chip enable current-limit and thermal protection mos driver + - vout shutdown and logic control r1 r2 vin error amplifier vref bp en gnd 2 of 4 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification rt9167/a
absolute maximum ratings z input v oltage ------------------------------------------------------------------------------------------------------------ 8v z power dissipation, p d @ t a = 25 c sot-23-5 ---------------------------------------------------------------------------------------------------------------- 0.4w sop-8 -------------------------------------------------------------------------------------------------------------------- 0.625w z package thermal resistance (note1) sot-23-5 , ja ----------------------------------------------------------------------------------------------------------- 250 c/w sot-23-5, jc ---------------------------------------------------------------------------------------------------------- 130 c/w sop-8, ja -------------------------------------------------------------------------------------------------------------- 160 c/w sop-8, jc -------------------------------------------------------------------------------------------------------------- 60 c/w z operating junction temperature range -------------------------------------------------------------------------- ? 40 c to 125 c z storage temperature range ---------------------------------------------------------------------------------------- ? 65 c to 150 c z lead temperature (soldering, 10 se c.) --------------------------------------------------------------------------- 260 c electrical characteristics (v in = 5.0v, c in = 1 f, c out = 1 f, t a = 25c, unless otherwise specified) parameter symbol test conditions min typ max units 2.9 -- 7 input voltage range v in i l = 50ma 2.7 -- 7 v output voltage accuracy v out i l = 1ma -2 -- +2 % rt9167 300 -- -- maximum output current rt9167a i max 500 -- -- ma rt9167 400 -- -- current limit rt9167a i lim r load = 1 500 700 -- ma rt9167/a no load -- 80 150 rt9167/a i out = 300ma -- 90 150 quiescent current rt9167a i g i out = 500ma -- 90 150 a rt9167/a i out = 1ma -- 1.1 5 rt9167/a i out = 50ma -- 55 100 rt9167/a i out = 300ma -- 350 450 dropout voltage (2) (v out(normal) = 3.0v version) rt9167a v drop i out = 500ma -- 600 750 mv line regulation v line v in = (v out +0.15) to 7v, i out =1ma -- -- 6 mv/v rt9167/a i out = 0ma to 300ma -- -- 30 load regulation rt9167a v load i out = 0ma to 500ma -- -- 35 mv en input high threshold v ih v in = 3v to 5.5v 1.6 -- -- v en input low threshold v il v in = 3v to 5.5v -- -- 0.4 v en bias current i sd -- -- 100 na shutdown supply current i gsd v out = 0v -- 0.01 1 a thermal shutdown temperature t sd -- 155 -- c to be continued 3 of 4 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification rt9167/a
note 1. ja is measured in the natural convection at t a = 25 c on a low effective thermal conductivity test board of jedec 51-3 thermal measurement standard. pin 1 of sop-8 and pin4 of sot-23-5 packages are the case position for ja measurement. note 2. the dropout voltage is defined as v in -v out , which is measured when v out is v out(normal) ? 100mv. parameter symbol test conditions min typ max units output noise e no c bp = 10nf, c out = 10 f -- 350 -- nv ripple rejection psrr f = 100hz, c bp = 10nf, c out = 10 f -- 58 -- db hz 4 of 4 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification rt9167/a
|
