ap139 300ma low-noise cmos ldo this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev.1.1 jun 02, 2006 1/8 ? features - very low dropout voltage - low current consumption: typ.45a, max. 60a - output voltage: 1.5v,1.8v,2.0v, 2.5v, 2.8v, 3.0v 3.3v, and 3.5v - guaranteed 300ma output - input range up to 7.0v - thermal shutdown - current limiting - stability with low esr capacitors - low temperature coefficient - pb-free package: sot23-5l,tsot23-5l ? applications - battery-powered devices - personal communication devices - home electric/electronic appliances - pc peripherals ? general descriptions the ap139 is a positive voltage linear regulator utilizing cmos technology. the features that include low quiescent current (45a typ.), low dropout voltage, and high output voltage accuracy, make it ideal for battery applications. en input connected to cmos has low bias current. the space-saving sot23-5l and tsot23-5l package is attractive for ?pocket? and ?hand held? applications. this rugged device has both thermal shutdown, and current limit protections to prevent device failure under the ?worst? operating conditions. in a low noise, regulated supply application, a 10nf capacitor is necessary to be placed in between bypass and ground. the ap139 is stable with a low esr output capacitor of 1.0f or greater. ? pin assignments 1 3 2 5 4 byp v in en gnd v out ap139 sot23-5/tsot23-5 (top view) ? pin descriptions pin name pin no. function v in 1 power supply gnd 2 ground en 3 enable pin byp 4 bypass signal pin v out 5 output ? ordering information ap139 xx x x w : sot23-5l tw:tsot23-5l output voltage package 15: 1.5v 18: 1.8v 20: 2.0v 25: 2.5v 28: 2.8v 30: 3.0v 33: 3.3v 35: 3.5v blank: tube a: taping packing
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 jun 02, 2006 2/8 ? block diagram current limit thermal shutdown amp + - vref byp en 1ua v out gnd v in r1 r2 ? absolute maximum ratings symbol parameter rating unit v in input voltage +7 v i out output current p d / (v in -v o ) ma v out output voltage gnd - 0.3 to v in + 0.3 v esd classification b t a ambient temperature range -40 to +85 oc t j junction temperature range -40 to +125 oc ? thermal information symbol parameter maximum unit jc thermal resistance sot23-5l 160 oc/w p d internal power dissipation ( ? t=100 oc) sot23-5l 250 mw t j maximum junction temperature 150 oc t lead maximum lead temperature (10 sec) 300 oc
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 ju n 02, 2006 3/8 ? electrical characteristics (t a =+25oc, unless otherwise noted.) symbol parameter test conditions min. typ. max. unit v in input voltage note 1 - 7 v i q quiescent current i o =0ma - 45 60 a i stb standby current v in =5.0v, v out =0v, v en < v el - 2.0 3.0 a output voltage accuracy i o =1ma, v in =5v -2 - 2 % v out v out temperature coefficient - 50 - ppm/ o c v o =1.5v - - 1.5 v o =1.8v - - 1.2 v o =2v - - 1 v o =2.5v - - 0.6 v dropout dropout voltage i o =1ma to 300ma, v out =v o(nom) -1.5% v o 2.8v - - 0.45 v i out output current 300 - - ma i limit current limit v out > 1.05v 300 450 - ma i short short circuit current vcc=5v,vout<1.05v - 150 300 ma v line line regulation i out =5ma, v in =5~7v - 0.1 0.3 % v load load regulation i o =1ma to 300ma, v in =5v - 0.3 1 % f=1khz - 60 - f=10khz - 50 - psrr power supply rejection i o =100ma, c o =2.2f ceramic f=100khz - 40 - db f=1khz - 75 - f=10khz - 55 - psrr power supply rejection i o =100ma, c o =2.2f ceramic, c byp =20nf f=100khz - 30 - db v eh output on 1.7 - - v v el en input threshold output off - - 0.8 v i en enable pin current - - <0.1 a ots over temperature shutdown - 130 - o c oth over temperature hysteresis - 20 - o c note 1. : v in(min) =v out +v dropout ? typical application ap139 byp en v out gnd v in c1 1uf c2 10nf c3 1uf in out
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 ju n 02, 2006 4/8 ? typical performance characteristics 0 10 20 30 40 50 60 70 80 90 100 3.5 4 4.5 5 5.5 6 6.5 7 vcc vs quiescent current vcc (v) quiescent current ( a) ta=25 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.5 1.8 2 2.5 2.8 3 3.3 3.5 dropout voltage (v) vout (v) vout vs dropout voltage io=300ma io=200ma io=100ma -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.0e+00 1.0e+01 1.0e+02 1.0e+03 1.0e+04 1.0e+05 1.0e+06 power supply rejection ratio psrr (db) frequency (hz) bp=1nf bp=5nf bp=10nf bp=20nf iout=100ma -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.0e+00 1.0e+01 1.0e+02 1.0e+03 1.0e+04 1.0e+05 1.0e+06 power supply rejection ratio psrr (db) frequency (hz) 100ma 10ma 1ma bp=10nf -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.0e+00 1.0e+01 1.0e+02 1.0e+03 1.0e+04 1.0e+05 1.0e+06 power supply rejection ratio psrr (db) frequency (hz) 100ma 10ma 1ma bp=0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 1.5 1.8 2 2.5 2.8 3 3.3 3.5 current limit (a) vout vs current limit vcc=5v vout (v)
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 ju n 02, 2006 5/8 ? typical performance char acteristics (continued) 0 50 100 150 200 250 300 350 400 3.544.555.566.57 vcc vs short current vcc (v) s h o r t c u r r e n t ( m a ) top to bottom vout=1.5v vout=1.8v vout=2.5v vout=3.3v ? function description the ap139 of cmos regulators contain a pmos pass transistor, voltage reference, error amplifier, over-current protection, thermal shutdown. the p-channel pass transistor receives data from the error amplifier, over-current protection, and thermal protection circuits. during normal operation, the error amplifier compares the output voltage to a precision reference. over-current and thermal shutdown circuits become active when the junction temperature exceeds 130 o c, or the current exceeds 300ma. during thermal shutdown, the output voltage remains low. normal operation is restored when the junction temperature drops below 110 o c. the ap139 switches from voltage mode to current mode when the load exceeds the rated output current. this prevents over-stress. enable the enable pin normally floats high. when actively, pulled low, the pmos pass transistor shut off, and all internal circuits are powered down. in this state, the quiescent current is less than 2a. this pin behaves much like an electronic switch. external capacitor the ap139 is stable with a low esr output capacitor to ground of 1.0f or greater. it can keep stable even with higher esr capacitors. a second capacitor is recommended between the input and ground to stabilize vin. the input capacitor should be larger than 0.1f to have a beneficial effect. all capacitors should be placed in close proximity to the pins. a ?quiet? ground termination is desirable.
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 ju n 02, 2006 6/8 ? marking information xx : identification code (see appendix) y : year: 0-9 m : month: a~l sot23-5l xx y m 7 12 3 4 5 xx : identification code (see appendix) y : year: 0-9 m : month: a~l tsot23-5l xx y m 7 12 3 4 5 appendix identification code output version n0 ap139-1.5v n1 ap139-1.8v n2 ap139-2.0v n3 ap139-2.5v n4 ap139-2.8v n5 ap139-3.0v n6 ap139-3.3v n7 ap139-3.5v
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 ju n 02, 2006 7/8 ? package information (1)package type: sot23-5l l e e he d a2 a1 b(5x) a view c l1 1(4x) 2(4x) e1 gauge plane c see view c dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o
ap139 300ma low-noise cmos ldo anachip corp. www.anachip.com.tw rev.1.1 ju n 02, 2006 8/8 ? package information (continued) (2) package type: tsot23-5l e1 e e e1 b d a a1 a2 y 2 4x 1 l1 r l c l2 gauge plane dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 0.75 - 0.90 0.030 - 0.035 a1 0.00 - 0.10 0.000 - 0.004 a2 0.70 0.75 0.80 0.028 0.030 0.031 b 0.35 - 0.51 0.014 - 0.020 c 0.10 - 0.25 0.004 - 0.010 d 2.80 2.90 3.00 0.110 0.114 0.118 e 2.60 2.80 3.00 0.102 0.110 0.118 e1 1.50 1.60 1.70 0.059 0.063 0.067 e 0.95 bsc. 0.037 e1 1.90 bsc. 0.075 l 0.37 - - 0.015 - - l1 0.60 ref. 0.024 l2 0.25 bsc. 0.010 y - - 0.10 - - 0.004 r 0.10 - - 0.004 - - 0 o - 8 o 0 o - 8 o 1 7 o nom. 7 o nom. 2 5 o nom. 5 o nom.
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