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ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 1 of 24 2010/10/29 description the ec49513a/l is a 4-low (low dropout, low quiescent current, low noise, low cost) linear regulator with on/off control and ec49513l can discharge output capacitor charge fast. the device operates in the input voltage range from +2.2v to +7.0v and delivers 300ma output current. the high accuracy output voltage is preset at an internally trimmed voltage 1.2v, 1.5v, 1.8v, 2.5v, 2.8v, 3.0v or 3.3v. other output voltages can be mask optioned from 1.2v to 5.0v with 100mv increment, except the ec49513a/l-285 which has 2.85v output voltage. the ec49513a/l consists of a 1.0v reference compares amplifier, a p-channel pass transistor, and an enable/disable logic circuit. other features include soft start function, short circuit protection, and thermal shutdown protection. the ec49513a/l is also compatible with low esr ceramic capacitors which give added output stability. this stability can be maintained even during load fluctuations due to the excellent transient response of the chip. the ec49513a/l devices are available in sot23-5l ufn-6 and tsot23-5 packages. features z ec49513a/l w i thout / w i th fast d i scharge z operat i ng v ol tage range +2 . 2v to +7 . 0v z output vo l tages +1 . 2v to +5 . 0v with 100mv z max i mum output current 300 ma z dropout vo l tage 120mv @ 100ma z low current consumpt i on 15 a (ty p. ) z shutdown current 0.1 a (typ . ) z 2% output vo l tage accuracy (spec i a l 1% highly accurate) z l ow esr capac i tor compat i b l e z h ig h r i pp l e re j ect i on 70 db z output current l i m i t protect i on (450ma) z short c i rcu i t protect i on (150ma) z therma l over lo ad shutdown protect i on z contro l output on / off funct i on z sot23-5l ufn-6 and tsot23-5 packages. z green (ha l ogen free wi th commerc i a l standard) application z battery-powered devices. z personal communication devices. z mobile phones, cordless phone. z portable games. z portable av equipment.
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 2 of 24 2010/10/29 block diagram
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 3 of 24 2010/10/29 pin# sot23-5l/tsot23-5l pin# ufn-6 symbol function 1 1 v in power input. 2 5 gnd ground pin. 3 6 en chip enable pin. 4 2,4 nc no connection. 5 3 v out voltage output pin. ordering information package part number information ec49513a-xxxb2g sot23-5l ec49513l-xxxb2g ec49513a-xxxfg ufn-6 ec49513l-xxxfg ec49513a-xxxt2g tsot23-5 ec49513l-xxxt2g the xxx character represents output voltage. example: 12=1.2v, 15=1.5v... pin assignment pin descriptions sot23-5l/tsot23-5l (top view) ufn-6 (bottom view)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 4 of 24 2010/10/29 package part number marking marking information ec49513a-xxxb2g 3avxx sot23-5l ec49513l-xxxb2g 3lvxx the 1st to 2nd character represents the v out type. 3a: with enable, 3l: with enable and fast discharge function. the 3rd character represents the output volt age code. please refer the table for output voltage code information. the xx characters represents ? the date code there are under-lines on 4th and 5th character for green package. there are no under lines on second lines of 1st and 2nd characters for lead free package. ec49513a-xxxfg 3av xx ufn-6 ec49513l-xxxfg 3lv xx the 1st to 2nd character represents the v out type. 3a: with enable, 3l: with enable and fast discharge function. the 3rd character represents the output volt age code. please refer the table for output voltage code information. the xx characters represents ? the date code there are under-lines on 4th and 5th character for green package. there are no under lines on second lines of 1st and 2nd characters for lead free package. ec49513a-xxxt2g 3avxx tsot23-5 ec49513l-xxxt2g 3lvxx the 1st to 2nd character represents the v out type. 3a: with enable, 3l: with enable and fast discharge function. the 3rd character represents the output volt age code. please refer the table for output voltage code information. the xx characters represents ? the date code. there is an under-line on 1 st digit for sot23-5 package. there is an under-line on 2 nd digit for tsot25 package there are under-lines on 4th and 5th character for green package. there are no under lines on second lines of 1st and 2nd characters for lead free package. marking information
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 5 of 24 2010/10/29 table1 mark code vs. output voltage code of products part part number mark part number mark part number mark ec49513a/l-12b2g ec49513a/l-28b2g ec49513a/l-42b2g ec49513a/l-12fg ec49513a/l-28fg ec49513a/l-42fg ec49513a/l-12t2g 5 ec49513a/l-28t2g k ec49513a/l-42t2g s ec49513a/l-15b2g ec49513a/l-285b2g ec49513a/l-15fg ec49513a/l-285fg ec49513a/l-15t2g 8 ec49513a/l-285t2g l ec49513a/l-18b2g ec49513a/l-30b2g ec49513a/l-18fg ec49513a/l-30fg ec49513a/l-18t2g a ec49513a/l-30t2g m ec49513a/l-25b2g ec49513a/l-33b2g ec49513a/l-25fg ec49513a/l-33fg ec49513a/l-25t2g g ec49513a/l-33t2g q ec49513a/l-27b2g ec49513a/l-36b2g ec49513a/l-27fg ec49513a/l-36fg ec49513a/l-27t2g j ec49513a/l-36t2g v absolute maximum ratings parameter symbol value units input voltage v in to gnd v in 7.0 v output current limit, i (limit) i out 0.5 a junction temperature t j +155 c thermal resistance (sot23-5l) ja 250 c/w sot23-5l 400 power dissipation ufn-6 p d 500 mw operating ambient temperature t opr -40 to +125 c storage temperature t stg -55 to +150 c lead temperature (soldering, 10sec.) ? +260 c note: *the power dissipation of values are based on the condition that junction temperature t j and ambient temperature t a difference is 100 *stresses beyond those listed under? absolute maximum ratings? ma y cause permanent damage to the device. these are stress ratin gs only, and function operation of the device at these to any ot her conditions beyond those indi cated under ?recommended operating conditions? is not implied. expos ure to absolute-maximum rated conditions for extended periods may affect device reliability. * the power dissipation of ufn-6 would be 500 mw normally with the 0.5x0.5 square inches cooper area connected to the bottom pa d. however, it could be up to 1000mw with larger cooper area.
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 6 of 24 2010/10/29 symbol parameter test conditions min typ max unit v in input voltage ? 2.2 ? 7.0 v v out output voltage v in =v out +0.8v -1% -2% v out +1% +2% v i max output current (see note *1) v out +0.8v Q v in Q 7.0v, 2.2v Q v in 300 ? ? ma i out =300ma,2.8v Q v in , 25 c Q t a Q 80 c ? 550 650 i out =180ma,2.8v Q v in ? 240 280 v drop dropout voltage i out =150ma,2.8v Q v in ? 160 180 mv v out +0.5v Q v in Q 7.0v, i out =1ma ? 0.2 0.3 ? v line line regulation v out +0.15v Q v in Q 5.0v,i out 1 ma, vin R 2.8v ? ? 0.2 % /v ? v load load regulation v in = v out +1v, 1ma Q i out Q 100ma ? 0.01 0.02 % / ma v in =5v, en=5v, no load ? 15 30 i q ground pin current vin =5v, en=5v, i out =150ma, ? 30 60 a i sd shutdown current vin = v out +1v, en=0v, no load ? 0.1 1.0 a v i h en pin input voltage ?h? (see note *2, *4 ) 2.0 ? ? v v il en pin input voltage ?l? (see note *2 ) ? ? 0.3 v i en en pin leakage current v in =( v out +0.15v) to 5v, v en >v i h (see note *3 ) ? 0.1 0.15 a i sc short circuit current ? ? 150 ? ma i out =30ma, f=1khz ? 70 ? psrr ripple rejection rate i out =30ma, f=10khz ? 65 ? db e n output noise i out =100ma, f=1khz, c out =10 a ? 40 ? v (rms) t sd thermal shutdown temperature ? ? 150 ? c t hys thermal shutdown hysteresis ? ? 20 ? c r dis discharge resistor v en =0v, (see note *3) ? 30 100 ? t dis discharge time v out =3.3v to 0v, c out =1 f (see note *3) ? 70 100 s electrical characteristics (v in =5v, ta=25 , unless otherwise noted.) note: *1) measured using a double sided board with 1?x2? squar e inches of copper area connected to the gnd pins for ?heat spre ading?. *2) en pin input voltage must be always less than or equal to input voltage. *3) it is for the ec49513l only. *4) en pin with internal pull high resistor is about several hundreds of k ? for ec49513a only.
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 7 of 24 2010/10/29 ( 1) output voltage vs. output current typical performance characteristics
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 8 of 24 2010/10/29 ( 1) output voltage vs. output current (continued) typical performance characteristics
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 9 of 24 2010/10/29 ( 2) dropout voltage vs. output current typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 10 of 24 2010/10/29 ( 3) supply current vs. input voltage typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 11 of 24 2010/10/29 ( 4) supply current vs. ambient temperature typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 12 of 24 2010/10/29 ( 5) output voltage vs. ambient temperature ( 6) supply current vs. output current typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 13 of 24 2010/10/29 ( 7) output voltage vs. input voltage typical performance characteristics
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 14 of 24 2010/10/29 ( 8) input transient response typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 15 of 24 2010/10/29 ( 8) input transient response (continued) typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 16 of 24 2010/10/29 ( 9) load transient response typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 17 of 24 2010/10/29 ( 9) load transient response (continued) typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 18 of 24 2010/10/29 ( 10) power supply rejection ratio (ec49513a/l) ( 11) discharge time vs. output capacitance (ec49513l only) typical performance characteristics (continued)
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 19 of 24 2010/10/29 detail description the ec49513a/l is a low dropout linear regulator. t he device provides preset 2.5v, 2.85v and 3.3v output voltages for output current up to 300ma. other mask options for special output voltages from 1.2v to 5.0v with 100mv increment are also available. as illustrated in functi on block diagram, it consists of a 1.0v reference, error amplifier, a p-channel pass transistor, an on/off control logic and an internal feedback voltage divider. the 1.0v band gap reference is connected to the error amp lifier, which compares this reference with the feedback voltage and amplifies the voltage difference. if the feedback voltage is lower than the reference voltage, the pass-transistor gate is pulled lower, which allows more cu rrent to pass to the output pin and increases the output voltage. if the feedback voltage is too high, the pass transist or gate is pulled up to decrease the output voltage. the output voltage is feed back through an internal resistive divider connected to v out pin. additional blocks include an output current limiter, thermal sensor, and shutdown logic. internal p-channel pass transistor the ec49513a/l features a p-channel mosfet pass tr ansistor. unlike similar designs using pnp pass transistors, p-channel mosfets require no base drive, which reduces quiescent current. pnp based regulators also waste considerable current in dropout when the pa ss transistor saturates, an d use high base-drive currents under large loads. the ec49513a/l does not suffer from these problems and consumes only 15 a (typ.) of current consumption under heavy loads as well as in dropout conditions. enable function en pin s t ar t s and s t ops t he regula t or . when t he en pin is swi t ched t o t he power o ff level , t he opera t ion o f all in t ernal circui t s t ops , t he build-in p-channel mosfet ou t pu t t ransis t or be t ween pins v in and v out is swi t ched o ff, allowing curren t consump t ion t o be dras t ically reduced . the v out pin enters the gnd level thr ough the internal discharge path between v out and gnd pins . simplified application circuit
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 20 of 24 2010/10/29 fast discharge function the ec49513l has f as t discharge func t ion on en pin disable . when user t urns o ff ec49513l , i t s in t ernal pull low resis t or will discharge ou t pu t capaci t or charge . it ?ll avoid o t her device t o arise wrong mo t ions . output voltage selection the ec49513a/l output voltage is preset at an internally trimmed voltage 2.5v, 2.85v or 3.3v. the output volt age also can be mask-optioned from 1.2v to 5.0v with 100m v increment by special order. the first two digits of part number suffix identify the output voltage (see ordering informa tion). for example, the ec 49513a/l-33 has a preset 3.3v output volt age. current limit the ec49513a / l also includes a f old back curren t limi t er . it moni t ors and con t rols t he pass t ransis t or?s ga t e vol t age , es t ima t es t he ou t pu t curren t, and limi t s t he ou t pu t curren t wi t hin 0 . 5a . thermal overload protection thermal overload protection limits total power dissipati on of ec49513a/l. when the junction temperature exceeds t j = +150c, a thermal sensor turns off the pass transistor, allowing the ic to cool down. the thermal sensor turns the pass transistor on again after the junction temperature co ols down by 20c, resulting in a pulsed output during continuous thermal overload conditions. thermal overload protection is designed to protect the ec 49513a/l in the event of fault conditions. for continuous operation, the absolute maximum operati ng junction temperature rating of t j = +125c should not be exceeded. operating region an d power dissipation maximum power dissipation of the ec49513a/l depends on the thermal resistance of the case and printed circuit board, the temperature difference betw een the die junction and ambient air, and the rate of airflow. the power dissipation across the devices is p=i out x (v in -v out ). the resulting maximum power dissipation is where (t j -t a ) is the temperature difference between the ec 49513a/l die junction and the surrounding air, jc is the thermal resistance of the package chosen, and ca is the thermal resistance through the printed circuit board, copper traces and other materials to the surrounding ai r. for better heat-sinking, the copper area should be equally shared between the v in , v out , and gnd pins. the thermal resistance ja of sot23-5l package of ec49513a/l is 250c/w. based on a maximum operating junction temperature 125c with an ambient of 25c, the maximum power dissipation will be: thermal characteristics were measured using a double si ded board with 1?x 2? square inches of copper area connected to the gnd pin for ?heat spreading?. ja a j ca jc a j max t t t t p ) ( ) ( ? = + ? = w t t p ca jc a j max 40 . 0 250 ) 25 125 ( ) ( = ? = + ? =
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 21 of 24 2010/10/29 dropout voltage a regulator?s minimum input output voltage differential, or dropout voltage, determines the lowest usable supply voltage. in battery powered syst ems, this will determine the useful end of life battery voltage. the ec49513a/l uses a p-channel mosfet pass transistor, it s dropout voltage is a function of drain-to-source on-resistance (r ds (on) ) multiplied by the load current. out on ds out in dropout xi r v v v ) ( = ? =
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 22 of 24 2010/10/29 mechanical dimensions outline drawing sot23-5l
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 23 of 24 2010/10/29 mechanical dimensions outline drawing ufn-6l
ec49513a/l 300ma linear regulator with enable and fast discharge function e-cmos corp. ( www.ecmos.com.tw ) page 24 of 24 2010/10/29 mechanical dimensions outline drawing tsot23-5 dimensions in millimeters symbol min nom max a - 1.00 a1 0.00 0.05 0.10 a2 0.84 0.87 0.90 a3 0.58 0.68 0.78 b 0.35 0.40 0.50 c 0.10 0.125 0.15 d 2.70 2.90 3.10 e1 1.40 1.60 1.80 e1 - 1.90(typ) - e 2.60 2.80 3.00 e - 0.95(typ) - 1 1 5 9 l 0.37 - - l1 - 0.6ref - O l1-l2 O - - 0.12

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