WL2703D 300ma, low noise, high psrr dual output ldo descriptions the WL2703D series are dual output low dropout linear regulators and optimized to provide a high performance solution for battery power system to deliver low quiescent current. the WL2703D series are designed for portable equipments applications to deliver ultra low output noise and high psrr. the devices offer a new level of cost effective performance in cellular phones, laptop and notebook computers, and other portable devices. the WL2703D series are designed to make use of low cost ceramic capacitors which ensure the stability of the output current, and enhance the efficiency in order to prolong the battery life of those portable devices. the WL2703D regulators are available in dfn1820 packages with pb-free and halogen-free. features input voltage : 2.5v ~ 5.5v output voltage : 1.2v ~ 3.3v : (upon request) maximum output current : 300ma : (limited by p d ) psrr : 70db @ 1khz output noise : 100uv quiescent current : 120a shut-down current : < 0.1a dropout voltage : 120mv @ 200ma recommend capacitor : 1uf over temperature protection applications mp3/mp4 players cellphones, radiophone, digital cameras bluetooth, wireless handsets others portable electronics device dfn1820-6l pin configuration (top view) for detail marking information, please see page 10. marking order information for detail order information, please see page 10. gnd 123 4 5 6 wd
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typical application block diagram pin description pin symbol description 1 en2 ldo2 enable (active high) 2 vin power supply 3 en1 ldo1 enable (active high) 4 gnd ground 5 out1 ldo1 output 6 out2 ldo2 output 123 4 5 6 en2 vin en1 gnd out1 out2 1uf 1uf 1uf vin off on off on WL2703D 2 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
absolute maximum ratings note: these are stress ratings only. stresses exceeding the range specified under absolute maximum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. electronics characteristics ( v in = v en =v out +1v or 2.5v, c in =c out =1uf, t a =25c, unless otherwise noted ) parameter symbol value unit power dissipation p d 300 mw input voltage range v in -0.3 6.0 v enable voltage range v en -0.3 v in v output voltage range v out -0.3 v in v lead temperature t l 260 o c operating temperature t opr -40 85 o c storage temperature t stg -55 ~ 150 o c junction temperature t j 150 o c parameter symbol condition min. typ. max. unit input voltage v in 2.5 5.5 v output voltage v out i out =1ma ref to page 10 v output accuracy ? v out i out =1ma 2 % output current i out v in = v en =v out +1v or 2.5v 300 ma current limit i lim 400 ma v out = v out *0.98, i out =200ma 120 200 mv dropout voltage v drop v out = v out *0.98, i out =300ma 190 300 mv line regulation ? v line v out +1vv in 5.5v, i out =1ma 5 mv load regulation ? v load v in =v out +1v, i out =1 ~ 300ma 30 mv quiescent current (single ldo) i q v in = v en =v out +1v or 2.5v , i out =0ma 120 155 a shutdown current i shdn v en =0v 0.1 1.0 a power supply rejection rate psrr f=1khz, i out =30ma, 0.5vp-p 70 db en logic high voltage v enh start up 1.2 v en logic low voltage v enl shutdown 0.4 v en input current i en v en = 0 to 5.5v 0.8 a output noise voltage e no 10hz to 100khz, i out =200ma, c out =1 f 100 v rms thermal shutdown temperature t sd 150 o c thermal shutdown hysteresis t sd 30 o c WL2703D 3 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical characteristics ( v in = v en =v out +1v or 2.5v, c in =c out =1uf, t a =25c, unless otherwise noted ) output voltage vs. input voltage output voltage vs. output current output voltage vs. output current output voltage vs. input voltage output voltage vs. output current output voltage vs. output current 01234567 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 output voltage(v) input voltage(v) v out =2.8v,i out =0ma v out =2.8v,i out =100ma v out =2.8v,i out =300ma 01234567 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 output voltage(v) input voltage(v) v out =1.8v,i out =0ma v out =1.8v,i out =100ma v out =1.8v,i out =300ma 0 200 400 600 800 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 output voltage(v) output current(ma) v out =2.8v,v in =3.8v v out =2.8v,v in =5.0v v out =2.8v,v in =5.5v 0 200 400 600 800 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 output voltage(v) output current(ma) v out =1.8v,v in =2.8v v out =1.8v,v in =5.0v v out =1.8v,v in =5.5v 0 100 200 300 400 500 600 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 output voltage(v) output current(ma) t a = -40 0 c v in = 5.5v v out =1.8v 0 100 200 300 400 500 600 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 output voltage(v) output current(ma) t a = -40 0 c v in = 5.5v v out = 2.8v WL2703D 4 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
output voltage vs. output current output voltage vs. output current output voltage vs. ambient temperature output voltage vs. output current output voltage vs. output current output voltage vs. ambient temperature -50 -25 0 25 50 75 100 2.700 2.725 2.750 2.775 2.800 2.825 2.850 output voltage(v) temperature(c 0 ) i out =30ma v out =2.8v -50-25 0 255075100 1.700 1.725 1.750 1.775 1.800 1.825 1.850 output voltage(v) temperature(c 0 ) i out =30ma v out =1.8v 0 100 200 300 400 500 600 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 output voltage(v) output current(ma) t a = 25 0 c v in = 5.5v v out = 1.8v 0 100 200 300 400 500 600 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 output voltage(v) output current(ma) t a = 85 0 c v in = 5.5v v out = 1.8v 0 100 200 300 400 500 600 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 output voltage(v) output current(ma) t a = 25 o c v in = 5.5v v out = 2.8v 0 100 200 300 400 500 600 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 output voltage(v) output current(ma) t a = 85 0 c v in = 5.5v v out = 2.8v WL2703D 5 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
quiescent current vs. input voltage dropout voltage vs. output current turn on speed with en quiescent current vs. ambient temperature psrr vs. frequency turn on speed with en 01234567 0 20 40 60 80 100 120 140 160 i q (ua) input voltage(v) v out =1.8v,i out =0ma v out =2.8v,i out =0ma -50 -25 0 25 50 75 100 0 25 50 75 100 125 150 i q (ua) temperature(c 0 ) v out =2.8v v out =1.8v 0 50 100 150 200 250 300 0 40 80 120 160 200 240 280 t a = -40 o c t a = 25 o c t a = 85 o c dropout voltage(v) output current(ma) v out =2.8v 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 psrr(db) frequency(hz) v in =3v dc + 0.5vp-p v out = 1.8v i out = 30ma WL2703D 6 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
turn on speed with en turn off speed with en turn off speed with en turn on speed with en turn off speed with en turn off speed with en WL2703D 7 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
input transient response load transient response input transient response load transient response WL2703D 8 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
package outline dimensions dfn1820-6l dimensions in millimeters symbol min. typ. max. a 0.450 0.500 0.550 a1 0.000 - 0.050 a3 0.150 ref. d 1.724 1.800 1.876 e 1.924 2.000 2.076 d1 1.300 1.400 1.500 e1 0.800 0.900 1.000 k 0.200 min. b 0.180 0.230 0.280 e 0.500 typ. l 0.174 0.250 0.326 WL2703D 9 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
order information remark: 1. marking: y = year ww = week output voltage(v) ordering no. out1 out2 package marking shipping WL2703D01-6/tr 1.8 2.8 dfn1820-6l wd01 ayww 3000/tape&reel WL2703D 10 of 10 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
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