ts9015 300ma cmos ldo 0.9v adjustable voltage with enable function 1/5 version: c08 sot - 25 general description the ts9015 is a low dropout voltage linear regulato r. there are device designed specifically for batte ry-operated systems. ground current is very small as 50ua(typ), that significantly extending battery life. low pow er consumption and high accuracy is achieved through c mos and programmable fuse technologies. output volt age is able to adjust from 1v to 6v. the ts9015 consist s of a high-precision voltage reference, and error correction circuit, and a current limited output driver. with good transient responses, output remains stable eve n during load changes. the en input enables to be turned off, res ulting in reduced power consumption. ts9015 have high ripple rejection ratios, a 470pf c apacitor from the bypass pin to ground to reduces n oise present on the internal reference, which in turn si gnificantly reduces output noise. if output noise i s not a concern, the bypass pin may be left unconnected. larger capa citor values can be used, but the results in a long er time period to rate output voltage when power is initial ly applied. features output current is excess of 300ma low power consumption: 50ua(typ.) output voltage 2% internal current limit thermal shutdown power saving shutdown mode p-mos output stage with low rds(on) adjustable output voltage from 1v to 5.4v applications instrumentation wireless device battery powered equipment electronic scales cordless phone ordering information part no. package packing ts9015cx5 rf sot-25 3kpcs / 7 reel block diagram typical application circuit v out = 0.9 ( 1 + r1 / r2 ) c2 is unnecessary when r1 or r2 < 20k pin definition : 1. input 2. ground 3. enable 4. adjustable 5. output v in en v out gnd adj
ts9015 300ma cmos ldo 0.9v adjustable voltage with enable function 2/5 version: c08 absolute maximum rating parameter symbol limit unit input supply voltage v in +2.0 ~ +7 v enable input voltage v ce gnd-0.3 ~ v in +0.3 v output current i o 500 ma power dissipation @ t a Q 25 o c p d 400 mw thermal resistance ? ja 140 o c/w operating junction temperature range t j -40 ~ +125 o c storage temperature range t stg -65 ~ +150 o c lead soldering temperature (260 o c) 10 s notes 1: stress above the listed absolute rating may cause permanent damage to the device. notes 2: ? ja is measured with the pcb copper area of approximat ely 1 in 2 (multi-layer) electrical characteristics (vin=vout +2v, ta = 25 o c, unless otherwise noted) parameter symbol test condition min typ max units input voltage v in (note 1) 2.0 -- 7 v dropout voltage v drop i o =300ma v o =v o(nom) -2.0% 1.0v< v o(nom 2.0v -- 650 1000 mv 2.0v< v o(nom 2.8v -- 450 700 2.8v< v o(nom -- 300 500 output current i o v o >0.96*vrating 300 -- -- ma current limit i lim -- 500 -- ma ground pin current i gnd i o =1ma to 150ma -- 50 85 ua line regulation reg line i o =1ma v in = v o +1 to v o +2 v o < 2.0v -- -- 0.1 % v o 2.0v -- -- 0.15 % load regulation reg load i o =10ma to 300ma -- 0.2 1 % over temp. shutdown ots -- 125 -- o c over temp. hysterisis oth -- 30 -- o c power supply rejection psrr i o =200ma c o =2.2mf f=100hz -- 60 -- db f=1khz -- 50 -- f=10khz -- 35 -- output voltage noise en f=10hz to 100khz, i o =10ma c o =2.2nf -- 30 -- mvrm s adj input bias current i adj -- 1 -- ua adj reference voltage v ref 0.87 0.9 0.918 v en input threshold v eh i o =10ma 1.6 -- v in v v el i o =10ma 0 -- 0.4 v en input bias current i eh v en = v in , v in =2.5v to 7v -- -- 0.1 ua i el v en =0v, v in =2.5v to 7v -- -- 1 ua note 1: v in(min) =v out +v dropout note 2: to prevent the short circuit current protection fe ature from being prematurely activated, the input v oltage must be applied before a current source load is applied.
ts9015 300ma cmos ldo 0.9v adjustable voltage with enable function 3/5 version: c08 detailed description the ts9015 of cmos regulators contain a pmos pass t ransistor, voltage reference, error amplifier, over -current protection and thermal shutdown. during normal oper ation, the error amplifier compares the output volt age to a precision reference. over-current and thermal shutd own circuits become active when the junction temper ature exceeds 150 o c, or the current exceeds 300ma. during thermal shu tdown, the output voltage remains low. normal operation is restored when the junction temperature drops below 100 o c. the ts9015 switches from voltage mode to current mode when the load exceeds the rated out put current. external capacitors the ts9015 is stable with an output capacitor to gr ound of 2.2uf or greater. ceramic capacitors have t he lowest esr, and will offer the best ac performance. conver sely, aluminum electrolytic capacitors exhibit the highest esr, resulting in the poorest ac response. unfortunately , large value ceramic capacitors are comparatively expensive. one option is to parallel a 0.1uf ceramic capacitor with a 10uf aluminum electrolytic. the benefit is low esr, high capacitance, and low overall cost. a second capacit or is recommended between the input and ground to s tabilize v in . the input capacitor should be at least 0.1uf to h ave a beneficial effect. all capacitors should be placed in close proximity to the pins. a "quiet" ground termination is desira ble. this can be achieved with a "star" connection. enable the enable pin normally floats high. when actively, pulled low, the pmos pass transistor shuts off, an d all internal circuits are powered down. in this state, the quies cent current is less than 1ma. this pin behaves muc h like an electronic switch.
ts9015 300ma cmos ldo 0.9v adjustable voltage with enable function 4/5 version: c08 sot-25 mechanical drawing marking diagram a9 = device code y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) l = lot code sot-25 dimension dim millimeters inches min max min max. a+a1 0.09 1.25 0.0354 0.0492 b 0.30 0.50 0.0118 0.0197 c 0.09 0.25 0.0035 0.0098 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e 1.90 bsc 0.0748 bsc h 2.40 3.00 0.09449 0.1181 l 0.35 bsc 0.0138 bsc ? 1 0o 10o 0o 10o s1 0.95 bsc 0.0374 bsc
ts9015 300ma cmos ldo 0.9v adjustable voltage with enable function 5/5 version: c08 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any erro rs or inaccuracies. information contained herein is intended to provide a product description only. no license, express or implied, to any intellectual property rights is granted by this document. except as provided in tscs terms and co nditions of sale for such products, tsc assumes no liability wh atsoever, and disclaims any express or implied warr anty, relating to sale and/or use of tsc products includi ng liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, cop yright, or other intellectual property right. the products shown herein are not designed for use in medical, life-saving, or life-sustaining applica tions. customers using or selling these products for use i n such applications do so at their own risk and agr ee to fully indemnify tsc for any damages resulting from such i mproper use or sale.
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