wl2851 k will semiconductor ltd. 1 apr 2016 C rev . 1. 5 wl2851 k high input voltage , low quiescent current ldo descriptions the wl2851 k s eries is a high accuracy, high input voltage low quiescent current , high speed, and low dropout line r regulator with high ripple rejection. the device is manufactured with bi - cmos process. the wl2851 k offer s over - current limit and over temperature protection to ensure the device working in well conditions. the wl2851 k regulators are availab le in standard sot - 89 - 3 l packages . standard products are pb - free and halogen - free . features ? supply v oltage : 4.75 v~ 4 0 v ? output r ange : 1. 8 v~ 5.0 v ? output accuracy : <+/ - 2% ? o utput c urrent : 3 0ma (up to 5 0ma typ .) ? psrr : 60 db @ 100 hz ? dropout v oltage : 240 mv @ i out = 3 0ma ? quiescent c urrent : 10 a @ v in =7v( typ. ) ? recommend c apacitor : 10 uf http://www. sh - willsemi.com sot - 89 pin configuration (top view) for detail markin g information, please see page 8 . marking order information for detail orde r information, please see page 8 . 1 2 3 gnd vin vout 2851 k ** yyww
wl2851 k will semiconductor ltd. 2 apr 2016 C rev . 1. 5 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 gnd ground 2 v in voltage in put 3 v out voltage out put w l 2 8 5 1 g n d c 1 1 0 u f c 2 1 0 u f v o u t v i n v i n g n d v o u t v r e f v i n v o u t
wl2851 k will semiconductor ltd. 3 apr 2016 C rev . 1. 5 absolute maximum ratings recommend o perating ratings electronics c haracteristics (ta=25 o c, v in = 12 v, c in =c out =1 0 uf, unless otherwise noted) symbol parameter tes t condition wl2851 k 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 4.9 5.0 5.1 v 3.234 3.3 3.366 v i out _pk maximum output current v in = 12v, r l =1 180 280 460 ma i q quiescent curre nt v in =7v, no load 10 15 a v in =24v, no load 11 16 v in =40v, no load 13 20 v d rop dropout voltage i out =1ma 8 12 mv i out = 3 0ma 240 40 0 v line line 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 3 5 t sd thermal protect ion 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/ paramet er value unit power dissipation internal limited mw v in range - 0 .3 4 5 v v out range - 0 .3 6.5 v lead temperature range 260 o c storage temperature range - 5 5 ~ 150 o c operating junction temperature range 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
wl2851 k will semiconductor ltd. 4 apr 2016 C rev . 1. 5 t ypical characteristics ( ta=25oc, cin=cout=1 0 uf, unless otherwise noted ) 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 20 40 60 80 100 120 140 160 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 output voltage ( v ) load current ( ma ) -40 o c v out = 3.3 v v in = 6 v v in = 12 v v in = 24 v v in = 30 v 0 20 40 60 80 100 120 140 160 180 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 output voltage ( v ) load current ( ma ) -40 o c v out = 5.0 v v in = 6 v v in = 12 v v in = 24 v v in = 30 v
wl2851 k will semiconductor ltd. 5 apr 2016 C rev . 1. 5 output voltage vs. load current output voltage vs. load current output voltage vs. load current output voltage vs. load current dropout voltage vs. output current dropout voltage vs. output current 0 20 40 60 80 100 120 140 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 output voltage ( v ) load current ( ma ) 25 o c v out = 3.3v v in = 6 v v in = 12 v v in = 24 v v in = 30 v 0 20 40 60 80 100 120 140 160 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 output voltage ( v ) load current ( ma ) 25 o c v out = 5.0v v in = 6 v v in = 12 v v in = 24 v v in = 30 v 0 10 20 30 40 50 60 70 80 90 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 output voltage ( v ) load current ( ma ) 85 o c v out = 3.3v v in = 6 v v in = 12 v v in = 24 v v in = 30 v 0 10 20 30 40 50 60 70 80 90 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 output voltage ( v ) load current ( ma ) 85 o c v out = 5.0v v in = 6 v v in = 12 v v in = 24 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 ) 0 20 40 60 80 100 120 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 v out = 5.0v dropout voltage ( v ) output current ( ma )
wl2851 k will semiconductor ltd. 6 apr 2016 C rev . 1. 5 psrr vs. frequency psrr vs. frequency psrr vs. frequency psrr vs. frequency psrr vs. frequency psrr vs. frequency 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) 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)
wl2851 k will semiconductor ltd. 7 apr 2016 C rev . 1. 5 quiescent current vs. output current startup from power on startup from power on s hutdown from power o ff s hutdown from power o ff 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 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
wl2851 k will semiconductor ltd. 8 apr 2016 C rev . 1. 5 order information marking: 285 1 k ** = device code y y = year ww = week or dering no. vout (v) package operating temperature marking shipping wl2851 k33 - 3/tr 3.3 sot - 89 - 40~+85c 285 1 k33 yyww tape and reel, 1 000 wl2851 k50 - 3/tr 5.0 sot - 89 - 40~+85c 285 1 k50 yyww tape and reel, 1 000
wl2851 k will semiconductor ltd. 9 apr 2016 C rev . 1. 5 package outline dimensions sot - 89 - 3l symbol dimensions in millimeter min. typ. max. a 1.40 1.50 1.60 b 0.3 8 0.42 0. 47 b1 0.4 6 0.49 0.5 5 c 0. 40 - 0.44 d 4.40 4.50 4.60 d1 1.60 1.70 1.80 e 2. 4 0 2. 50 2.60 e1 4.05 - 4.25 e 1.50 typ. e1 3.00 typ. l 0. 89 - 1.20
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