ts39100 1a ultra low dropout voltage regulator 1/7 version: c11 sot - 223 to - 252 (dpak) general description the ts39100 are 1a ultra low dropout linear voltage regulators that provide low voltage, high current output from an extremely small package. this regulator offers e xtremely low dropout (typically 400mv at 1a) and ve ry low ground current (typically 17ma at 1a). the ts39100 are fully protected against over curren t faults, reversed input polarity, reversed lead in sertion, over temperature operation, positive and negative transi ent voltage spikes, logic level enable control and error flag which signals whenever the output falls out of regu lation. features dropout voltage typically 0.4v @io=1a output current up to 1a low ground current extremely fast transient response reversed leakage & reverse battery protection current limit & thermal shutdown protection ordering information part no. package packing ts39100cw xx rp sot-223 2.5kpcs / 13 reel ts39100cw xx rpg sot-223 2.5kpcs / 13 reel ts39100cp xx ro to-252 2.5kpcs / 13 reel ts39100cp xx rog to-252 2.5kpcs / 13 reel note: where xx denotes voltage option, available are 18 =1.8v , 25 =2.5v , 33 =3.3v , 50 =5.0v g denote for halogen free application uldo linear regulator for pc add-in cards powerpc tm power supplies battery powered equipment consumer and personal electronics high efficiency linear power supplies smps post regulator and dc to dc modules high-efficiency post regulator for switching supply portable application low-voltage microcontrollers and digital logic typical application circuit absolute maximum rating (note 1) parameter symbol value units supply voltage v in -20v ~ +20 v operation input voltage v in (operate) +2.25 ~ +16 v power dissipation (note 4) p d internally limited 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) 5 s esd (note 3) pin definition : 1. input 2. ground (tab) 3. output downloaded from: http:///
ts39100 1a ultra low dropout voltage regulator 2/7 version: c11 electrical characteristics v in = v out + 1v, v in =2.5v for fixed reference output voltage, venable= 2.25v, ta = 25 o c, unless otherwise specified. parameter conditions min typ max unit output voltage 10ma i l 1.0a, vo+1v v in 8v 0.980|vo| v out 1.020|vo| v 10ma i l 1.0a, 2.5v v in 16v 0.970|vo| 1.030|vo| v line regulation i l =10ma, vo+1v v in 16v -- 0.05 0.5 % load regulation v in =vout+1v, 8ma i l 300ma -- 0.05 0.1 % v in =vout+1v, 10ma i l 1a -- 0.2 1.0 output voltage temp. coefficient -- 40 100 ppm/ o c dropout voltage (note 5) ? v out = -1% i l =100ma i l =500ma i l =1.0a -- -- -- 100 275 400 250 350 630 mv quiescent current (note 6) v in = v out +1v i l =100ma i l =500ma i l =1.0a -- -- -- 0.7 6 17 -- -- 23 ma current limited v out =0, v in = v out +1v -- 1.8 -- a thermal performance condition package type typ unit thermal resistance junction to case sot-223 15 o c/w to-252 10 note 1: absolute maximum rating is limits beyond wh ich damage to the device may occur. for guaranteed specifications and test conditions see the electric al characteristics. note 2: the device is not guaranteed to operate out side its operating rating. note 3: devices are esd sensitive. handling precaut ions recommended. note 4: the maximum allowable power dissipation is a function of the maximum junction temperature, t j , the junction to ambient thermal resistance, ? ja , and the ambient temperature, ta. exceeding the ma ximum allowable power dissipation will cause excessive di e temperature, and the regulator will go into therm al shutdown. the effective value of ? ja can be reduced by using a heat sink, pd (max) = (t j(max) C ta) / ? ja . note 5: dropout voltage is defined as the input to output differential at which the output voltage dro ps -1% below its nominal value measured at 1v differential. note 6: ground pin current is the regulator quiesce nt current. the total current drawn from the source is the sum of the ground pin current and output load current, i gnd = i in - i out for fix output voltage, , i gnd = i in - i out +10ma for fix reference output voltage in full load regulation. note 8: output voltage temperature coefficient is ? v out (worse cast) / (t j(max) C t j(min) ) where is t j(max) +125 o c and t j(min) is 0 o c. downloaded from: http:///
ts39100 1a ultra low dropout voltage regulator 3/7 version: c11 functional diagram application information the ts39100 are high performance with low dropout v oltage regulator suitable for moderate to high curr ent and voltage regulator application. its 630mv dropout vo ltage at full load and over temperature makes it es pecially valuable in battery power systems and as high effic iency noise filters in post regulator applications. unlike normal npn transistor design, where the base to emitter vo ltage drop and collector to emitter saturation volt age limit the minimum dropout voltage, dropout performance of the pnp output of these devices is limited only by low v ce saturation voltage. the ts39100 is fully protected from damage due to f ault conditions. linear current limiting is provide d. output current during overload conditions is constant. the rmal shutdown the device when the die temperature e xceeds the maximum safe operating temperature. transient p rotection allows device survival even when the inpu t voltage spikes above and below nominal. the output structur e of these regulators allows voltages in excess of the desired output voltage to be applied without reverse curren t flow. output capacitor requirement the ts39100 requires an output capacitor to maintai n stability and improve transient response is neces sary. the value of this capacitor is dependent upon the outpu t current, lower currents allow smaller capacitors. ts39100 output capacitor selection is dependent upon the es r of the output capacitor to maintain stability. wh en the output capacitor is 10uf or greater, the output capacitor should have an esr less than 2 ? . this will improve transient response as well as promote stability. ultra low es r capacitors (<100m ? ), such as ceramic chip capacitors, may promote instability. these very low esr levels may cause an oscillation and/or under damped transient response. a low esr solid tantalum capacitor works extremely well and provides good transient response and stabi lity over temperature aluminum electrolytes can also be used, as long as the esr of the capacitor is <2 ? . the value of the output capacitor can be increased without limit. hi gher capacitance values help to improve transient r esponse and ripple rejection and reduce output noise. input capacitor requirement an input capacitor of 1uf or greater is recommended when the device is more than 4 away from the bulk ac supply capacitance or when the supply is a battery. small, surface mount, ceramic chip capacitors can be used for bypassing. larger values will help to improve rippl e rejection by bypassing the input to the regulator , further improving the integrity of the output voltage. minimum load current the ts39100 is specified between finite loads. if t he output current is too small leakage currents dom inate and the output voltage rises. a 10ma minimum load current i s necessary for proper regulation. downloaded from: http:///
ts39100 1a ultra low dropout voltage regulator 4/7 version: c11 application information (continue) transient response and 3.3v to 2.5v or 2.5v to 1.8v conversion ts39100 has excellent transient response to variati ons in input voltage and load current. the device h ave been designed to respond quickly to load current variati ons and input voltage variations. large output capa citors are not required to obtain this performance. a standard 10u f output capacitor, preferably tantalum, is all tha t is required. larger values help to improve performance even furt her. by virtue of its low dropout voltage, this dev ice does not saturate into dropout as readily as similar npn bas e designs. when converting from 3.3v to 2.5v or 2.5 v to 1.8v, the npn based regulators are already operating in d ropout, with typical dropout requirements of 1.2v o r greater,. to convert down to 2.5v or 1.8v without operating i n dropout, npn based regulators require an input vo ltage of 3.7v at the very least. the ts39100 will provide ex cellent performance with an input as low as 3.0v or 2.5v respectively. this gives the pnp based regulators a distinct advantage over older, npn based linear re gulators. copper area lay out information determine the power dissipation requirements for th e design along with the maximum ambient temperature at which the device will be operated. refer to power d issipation with copper area curve, which shows safe operating curves for three different ambient temperatures wit h 25 o c, 50 o c, 85 o c. from these curves, the minimum amount of copper can be determined by knowing the maximum pow er dissipation required. p d = (v in - v out ) * i out + v in * i gnd if we used a 5.0v output device and a 6v input at a n output current of 350ma, then the power dissipati on is as follows: p d = (6.0v- 5.0v) * 350ma + 5v * 4ma p d = 350mw + 20mw p d = 370mw if the maximum ambient temperature is 85 o c and the power dissipation is as above 375mw, the curve is shows that the required area of copper is 80mm 2 . downloaded from: http:///
ts39100 1a ultra low dropout voltage regulator 5/7 version: c11 to-252 mechanical drawing marking diagram xx = output voltage ( 18 =1.8v, 25 =2.5v, 33 =3.3v, 50 =5v) 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) = month code for halogen free product ( o =jan, p =feb, q =mar, r =apl, s =may, t =jun, u =jul, v =aug, w =sep, x =oct, y =nov, z =dec) l = lot code to-252 dimension dim millimeters inches min max min max a 2.3bsc 0.09bsc a1 4.6bsc 0.18bsc b 6.80 7.20 0.268 0.283 c 5.40 5.60 0.213 0.220 d 6.40 6.65 0.252 0.262 e 2.20 2.40 0.087 0.094 f 0.00 0.20 0.000 0.008 g 5.20 5.40 0.205 0.213 g1 0.75 0.85 0.030 0.033 g2 0.55 0.65 0.022 0.026 h 0.35 0.65 0.014 0.026 i 0.90 1.50 0.035 0.059 j 2.20 2.80 0.087 0.110 k 0.50 1.10 0.020 0.043 l 0.90 1.50 0.035 0.059 m 1.30 1.70 0.051 0.67 downloaded from: http:///
ts39100 1a ultra low dropout voltage regulator 6/7 version: c11 sot-223 mechanical drawing marking diagram xx = output voltage ( 18 =1.8v, 25 =2.5v, 33 =3.3v, 50 =5v) 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) = month code for halogen free product ( o =jan, p =feb, q =mar, r =apl, s =may, t =jun, u =jul, v =aug, w =sep, x =oct, y =nov, z =dec) l = lot code sot-223 dimension dim millimeters inches min max min max a 6.350 6.850 0.250 0.270 b 2.900 3.100 0.114 0.122 c 3.450 3.750 0.136 0.148 d 0.595 0.635 0.023 0.025 e 4.550 4.650 0.179 0.183 f 2.250 2.350 0.088 0.093 g 0.835 1.035 0.032 0.041 h 6.700 7.300 0.263 0.287 i 0.250 0.355 0.010 0.014 j 10 16 10 16 k 1.550 1.800 0.061 0.071 downloaded from: http:///
ts39100 1a ultra low dropout voltage regulator 7/7 version: c11 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 pa tent, copyright, or other intellectual property rig ht. 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. downloaded from: http:///
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