WL2851E will semiconductor ltd. 1 apr 2016 C rev.1. 6 WL2851E high input voltage, low quiescent current ldo descriptions the WL2851E series is a high accuracy, high input voltage low quiescent current, high speed, and low dropout liner regulator with high ripple rejection. the device is manufactured with bi - cmos process. the WL2851E offers over - current limit and over temperature protection to ensure the device working in well conditions. the WL2851E regulators are available in standard sot - 23 - 5 l packages. standard products are pb - free and halogen - fre e. features ? supply v oltage : 4.75v~ 4 0v ? output r ange : 1.8v~5. 7 v ? output accuracy : <+/ - 2% ? output c urrent : 150 ma @ ( v in - v out =2v ) (typ.) ? psrr : 60db @ 100hz ? dropout v oltage : 240 mv @ i out = 3 0ma ? quiescent c urrent : 10a@v in =7v(typ.) ? recommend c apacitor : 1 0uf http://www.sh - willsemi.com sot - 23 - 5l pin configuration (top view) for detail marking information, please see page 8 . mar king order information for detail order information, please see page 8 . v i n g n d n c v o u t n c 1 2 3 4 5 * * * * * * * *
WL2851E will semiconductor ltd. 2 apr 2016 C rev.1. 6 typical application locate cin and cout as close to the vin pin and vout pin as possible. pin description b lock diagram pin symbol description 1 v in voltage in put 2 gnd ground 3 nc not connect 4 nc not connect 5 v out voltage out put 1 2 3 4 5 v i n 1 0 u f v o u t 1 0 u f v r e f g n d v o u t c u r r e n t l i m i t o t p v i n
WL2851E will semiconductor ltd. 3 apr 2016 C rev.1. 6 absolute maximum ratings recommend operating ratings electronics characteristics (ta=25 o c, v in =12v, c in =c ou t =10uf, unless otherwise noted) symbol parameter test condition WL2851E spec unit min. typ. max. v in input range i out =10ma 4.75 4 0 v v out output range i out =10ma v out *0.98 v out v out *1.02 v v out output voltage v in =12v,i out =10ma 3.234 3.3 3.366 v 4.9 5.0 5.1 v i out_pk maximum output current v in =12v, r l =1 180 280 460 ma i q quiescent current v in =7v, no load 10 15 a v in =24v, no load 11 16 v in =40v, no load 13 20 v drop dropout voltage i out =1ma 8 12 mv i out = 3 0ma 240 40 0 v line li ne regulation v in =7 -- 24v,v out =5v i out =1ma 0.02 %/v v in =7 -- 45v,v out =5v i out =1ma 0.1 v load load regulation v in =12v, i out =1 -- 100ma 0.6 % e no output noise i out =10ma - 100 +100 v psrr ripple rejection v in =10v v pp =0.5v i out =1ma f=100hz 60 db f=1khz 45 f=10khz 35 t sd thermal protection v in =12v, i out =1ma 165 t sd_hys thermal protection hys v in =12v, i out =1ma 30 vo/t temperature cofficient v in =12v, i out =1ma 0.5 mv/ parameter value unit power dissipation internal limited mw v in range - 0.3 45 v v out range - 0.3 6.5 v lead temperature range 260 o c storage temperature range - 55 ~ 150 o c operating junction temperature ra nge 150 o c esd mm 400 v esd hbm 4k v parameter value unit operating supply voltage 4.75 4 0 v operating temperature range - 40 85 o c thermal resistance, r ja 150 o c/w
WL2851E will semiconductor ltd. 4 apr 2016 C rev.1. 6 t ypical characteristics (ta=25 quiescent current vs. input voltage quiescent current vs. input voltage output voltage vs. temperature output voltage vs. temperature output voltage vs. load current output voltage vs. load current 0 5 10 15 20 25 30 35 40 45 0 2 4 6 8 10 12 14 16 18 20 v out = 3.3v quiescent current ( ua ) input voltage ( v ) 0 5 10 15 20 25 30 35 40 45 0 2 4 6 8 10 12 14 16 18 20 v out = 5.0v quiescent current ( ua ) input voltage ( v ) -40 -20 0 20 40 60 80 100 120 140 160 3.00 3.05 3.10 3.15 3.20 3.25 3.30 3.35 3.40 3.45 3.50 v in = 6 v v in = 12 v v in = 24 v v in = 30 v output voltage ( v ) temperature ( o c ) i o = 1 ma v out = 3.3v -40 -20 0 20 40 60 80 100 4.65 4.70 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 i o = 1 ma v out = 5.0v output voltage ( v ) temperature ( o c ) v in = 6 v v in = 12 v v in = 24 v v in = 30 v 0 50 100 150 200 250 300 350 400 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 output voltage(v) load current ( ma ) -40 o c v in = 5 v v in = 12 v v in = 30 v 0 50 100 150 200 250 300 350 400 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 output voltage(v) load current ( ma ) 25 o c v in = 5 v v in = 12 v v in = 30 v
WL2851E will semiconductor ltd. 5 apr 2016 C rev.1. 6 output voltage vs. load current dropout voltage vs. output current psrr vs. frequency psrr vs. frequency psrr vs. frequency psrr vs. frequency 0 50 100 150 200 250 300 350 400 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 output voltage(v) load current ( ma ) 85 o c v in = 5 v v in = 12 v v in = 30 v 0 20 40 60 80 100 120 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 v out = 3.3v dropout voltage ( v ) output current ( ma ) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 i o = 1 ma v out = 3.3v v in = 12 vdc + 0.5 v p-pac psrr(db) frequency(hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 i o = 1 ma v out = 5.0v v in = 12 vdc + 0.5 v p-pac psrr(db) frequency(hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 i o = 1 ma v out = 3.3v v in = 24 vdc + 0.5 v p-pac psrr(db) frequency(hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 i o = 1 ma v out = 5.0v v in = 24 vdc + 0.5 v p-pac psrr(db) frequency(hz)
WL2851E will semiconductor ltd. 6 apr 2016 C rev.1. 6 psrr vs. frequency psrr vs. frequency quiescent current vs. output current 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 i o = 1 ma v out = 3.3v v in = 30 vdc + 0.5 v p-pac psrr(db) frequency(hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 i o = 1 ma v out = 5.0v v in = 30 vdc + 0.5 v p-pac psrr(db) frequency(hz) 1 10 100 1000 10000 100000 0 2 4 6 8 10 12 14 16 18 20 22 24 i q (ua) i out (ua) v cc =5v v cc =10v v cc =20v v cc =30v
WL2851E will semiconductor ltd. 7 apr 2016 C rev.1. 6 startup from power on startup from power on shutdown from power off shutdown from power off v i n = 1 2 v v o u t = 3 . 3 v i o = 1 m a v i n = 1 2 v v o u t = 5 . 0 v i o = 1 m a v i n = 1 2 v v o u t = 3 . 3 v i o = 1 m a v i n = 1 2 v v o u t = 5 . 0 v i o = 1 m a
WL2851E will semiconductor ltd. 8 apr 2016 C rev.1. 6 order information marking: wb* = device code ea = package code y = year w = week ordering no. vout (v) package operating temperature marking shipping WL2851E33 - 5/tr 3.3 sot - 23 - 5l - 40~+85c wb33 eayw tape and reel, 3000 WL2851E50 - 5/tr 5.0 sot - 23 - 5l - 40~+85c wb50 eayw tape and ree l, 3000
WL2851E will semiconductor ltd. 9 apr 2016 C rev.1. 6 package outline dimensions sot - 23 - 5l symbol dimensions in millimeters min. typ. max. a - - 1.25 0 a1 0.00 0 - 0.1 5 0 a2 1.0 0 0 1.10 0 1. 20 0 b 0.3 6 0 - 0.50 0 c 0.1 4 0 - 0.20 0 d 2.82 6 2.9 26 3.02 6 e 1.5 26 1.6 26 1.7 26 e1 2.6 00 2.8 00 3.000 e 0.900 0.950 1.000 e1 1.80 0 1.9 0 0 2.00 0 l 0.3 5 0 0.45 0 0.60 0 0 o - 8 o
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