WL2801E low noise, high psrr, high speed, cmos ldo descriptions the WL2801E series is a high accuracy, low noise, high speed, low dropout cmos linear regulator with high ripple rejection. the devices offer a new level of cost effective performance in cellular phones, laptop and notebook computers, and other portable devices. the current limiter's fold-back circuit also operates as a short circuit protection and an output current limiter at the output pin. the WL2801E regulators are available in standard sot-23-5l packages. standard products are pb-free and halogen-free. features input voltage : 2.7v~5.5v output range : 1.2v~3.3v output current : 200ma (up to 300ma typ.) psrr : 75db @ 217hz dropout voltage : 170mv @ i out =200ma quiescent current : 70a typ. shut-down current : < 0.1a recommend capacitor : 1uf applications mp3/mp4 players cellphones, radiophone, digital cameras bluetooth, wireless handsets others portable electronics device sot-23-5l pin configuration (top view) **** for detail marking information, please see page 9. marking order information for detail order information, please see page 9. vin gnd en nc vout 2 3 4 5 1 1 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical application block diagram pin description pin symbol description 1 vin input 2 gnd ground 3 en enable (active high) 4 nc not connected 5 vout output 2 3 4 5 1 off on vin vout 1uf 1uf WL2801E 2 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
absolute maximum ratings recommend operating ratings electronics characteristics (ta=25 o c, v in =v out +1v, c in =c out =1uf, unless otherwise noted) parameter value unit power dissipation internal limited mw v in range -0.3 * 6.5 v v en range -0.3 * v in v v out range -0.3 * v in v lead temperature range 260 o c storage temperature range -55 ~ 150 o c operating junction temperature range 150 o c parameter value unit operating supply voltage 2.7 * 5.5 v operating temperature range -40 * 85 o c thermal resistance, r ja 250 o c/w parameter symbol condition min. typ. max. unit v out <2v, v in =2.7v, i out =1ma 0.97 v out v out 1.03 v out output voltage v out v out 1 2v, i out =1ma 0.98 v out v out 1.02 v out v current limit i lim v en =v in ref. to output voltage vs. output current chart ma v out =2.8v, i out =200ma 170 200 dropout voltage v drop v out =2.8v, i out =300ma 250 300 mv line regulation ? v line v in =2.7~5.5v, i out =1ma 0.01 0.15 %/v load regulation ? v load v out =2.8v , i out =1~300ma 20 30 mv quiescent current i q v out =2.8v, i out =0 70 100 a short current i short v en =v in, v out short to gnd with 1 170 ma shut-down current i shdn v en =0v 0.1 1.0 a v in =(v out +1v) dc +0.5v p-p f=217hz ,iout=10ma 75 power supply rejection rate psrr v in =(v out +1v) dc +0.5v p-p f=10khz, iout=10ma 65 db en logic high voltage v enh v in =5.5v, i out =1ma 1.2 v en logic low voltage v enl v in =5.5v, v out =0v 0.4 v en input current i en v en = 0 to 5.5v 1.0 a output noise voltage e no 10hz to 100khz, c out =1 f 100 v rms WL2801E 3 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical characteristics (ta=25 o c, v in =v out +1v, c in =c out =1uf, unless otherwise noted) quiescent current vs. supply voltage output voltage vs. supply voltage output voltage vs. output current quiescent current vs. supply voltage output voltage vs. supply voltage output voltage vs. output current 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 10 20 30 40 50 60 70 80 90 quiescent current (ua) input voltage (v) v out =2.8v i o =0ma 0.00.51.01.52.02.53.03.54.04.55.05.5 0 10 20 30 40 50 60 70 80 quiescent current(ua) input voltage(v) v out =1.2v i o =0ma 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 i o =1ma i o =200ma output voltage(v) input voltage(v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 i o =1ma i o =200ma output voltage(v) input voltage(v) 0 200 400 600 800 1000 1200 1400 0.0 0.5 1.0 1.5 2.0 2.5 3.0 t a = -40 o c output voltage (v) output current (ma) vin = 3.8v vin = 4.2v vin = 5.5v 0 100 200 300 400 500 600 700 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 t a = -40 o c output voltage (v) output current (ma) vin = 2.7v vin = 4.2v vin = 5.5v WL2801E 4 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
output voltage vs. output current output voltage vs. output current psrr output voltage vs. output current output voltage vs. output current psrr 0 200 400 600 800 1000 1200 1400 0.0 0.5 1.0 1.5 2.0 2.5 3.0 t a = 25 o c output voltage (v) output current (ma) vin = 3.8v vin = 4.2v vin = 5.5v 0 100 200 300 400 500 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 t a = 25 o c output voltage (v) output current (ma) vin = 2.7v vin = 4.2v vin = 5.5v 0 200 400 600 800 1000 1200 1400 0.0 0.5 1.0 1.5 2.0 2.5 3.0 t a = 85 o c output voltage (v) output current (ma) vin = 3.8v vin = 4.2v vin = 5.5v 0 100 200 300 400 500 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 t a = 85 o c output voltage (v) output current (ma) vin = 2.7v vin = 4.2v vin = 5.5v 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 v in = 3.8v+0.5v p-p v out = 2.8v i out = 10ma psrr(db) frequency(hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 v in = 3.0v+0.5v p-p v out = 1.2v i out = 10ma psrr(db) frequency(hz) WL2801E 5 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
output voltage vs. temperature start up shutdown output voltage vs. temperature start up shutdown 0 50 100 150 200 250 300 0 50 100 150 200 250 300 v out =2.8v vdrop(mv) output current(ma) -50 -25 0 25 50 75 100 125 150 2.5 2.6 2.7 2.8 2.9 3.0 3.1 v in = 3.8v i out = 1ma output voltage (v) temperature (c o ) WL2801E 6 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
load step line step load step line step WL2801E 7 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
packaging information sot-23-5l dimensions in millimeters symbol min. typ. max. a 1.050 - 1.250 a1 0.000 - 0.100 a2 1.050 - 1.150 b 0.300 0.4 0.500 c 0.100 - 0.200 d 2.820 2.9 3.020 e 1.500 1.6 1.700 e1 2.650 2.8 2.950 e 0.950 (basic) e1 1.800 1.9 2.000 l 0.300 0.45 0.600 0 o - 8 o WL2801E 8 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
order information marking: we** = device code yy = year ww = week ordering no. vout (v) package operating temperature marking shipping WL2801E12-5/tr 1.2 sot-23-5l -40~+85 c we12 yyww tape and reel, 3000 WL2801E13-5/tr 1.3 sot-23-5l -40~+85 c we13 yyww tape and reel, 3000 WL2801E15-5/tr 1.5 sot-23-5l -40~+85 c we15 yyww tape and reel, 3000 WL2801E18-5/tr 1.8 sot-23-5l -40~+85 c we18 yyww tape and reel, 3000 WL2801E25-5/tr 2.5 sot-23-5l -40~+85 c we25 yyww tape and reel, 3000 WL2801E28-5/tr 2.8 sot-23-5l -40~+85 c we28 yyww tape and reel, 3000 WL2801E30-5/tr 3.0 sot-23-5l -40~+85 c we30 yyww tape and reel, 3000 WL2801E33-5/tr 3.3 sot-23-5l -40~+85 c we33 yyww tape and reel, 3000 WL2801E 9 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
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