w l2803 k ultra low dropout , 800m a, cmos ldo descriptions the WL2803K series are ultra low dropout, low quiescent current, high psr r cmos ldo . the dropout voltage is 260m v (typ.) at 800m a load current . using cmos construction, the quiescent current consume d by the WL2803K is typically 150 u a over the entire input voltage range, making it attractive for consumer , networking applications that demand high output current. the WL2803K series are available in wide output voltage range version from 1.2v to 3.3 v with 0.1v step. standard output voltages are 1.8v, 3.3v. other output voltage options are available upon request. the WL2803K series offer thermal shutdown ( otp) and current limit functions, to assure the stability of chip and power system at wrong condi tion, and it uses trimming technique to guarantee output voltage accuracy within 2% . the WL2803K regulators are availab le in sot - 89 - 5 l packages . standard products are pb - free and halogen - free . features ? input voltage : 2.5v~ 5.5 v ? output voltage : 1. 8 v , 3. 3v (or upon request) ? o utput current : 800m a ? psrr : 6 5 db @ 1 k hz ? dropout voltage : 26 0m v @ i out =0.8 a ? output noise : 100uv ? quiescent current : 150 a typ. applications ? lcd tv ? stb ? computer, graphic card ? network communication equipments ? others portable elec tronics device s sot - 89 - 5 l pin configuration (top view) 2803k = device code ** = voltage code (33: 3.3v) yy = year code ww = week code marking order information for d etail information, p lease refer to page 9. 1 2 3 v i n g n d e n 5 4 n c v o u t 1 2 3 5 4 2 8 0 3 k * * y y w w 1 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 1 2 3 v i n g n d e n 5 4 n c v o u t 1 2 3 5 4 2 8 0 3 k * * y y w w
typical application block diagram pin description pin symbol description 1 vin input 2 gnd ground 3 en enable, active high 4 nc not connect 5 vout output 1 2 3 5 4 v i n o n o f f v o u t 4 . 7 u f 4 . 7 u f v r e f g n d v o u t v i n e n c u r r e n t l i m i t e n a b l e c o n t r o l o t p w l2803 k 2 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 1 2 3 5 4 v i n o n o f f v o u t 4 . 7 u f 4 . 7 u f v r e f g n d v o u t v i n e n c u r r e n t l i m i t e n a b l e c o n t r o l o t p
absolute maximum ratings note: these are stress ratings only. stresses exceeding the range specified un der 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 reliab ility. *1: surface mounted on fr - 4 board using 1 square inch pad size , dual side , 1oz copper *2: surface mounted on fr - 4 board using minimum pad size, 1oz copper * 3: power dissipation is calculate by p d = (v in - v out ) x i out recommend operating ra tings parameter symbol value unit input voltage r ange v in - 0.3 6.5 v output voltage r ange v out - 0.3 v in v power dissipation * 1 * 3 p d 1. 0 w power dissipation * 2 * 3 0. 5 w thermal resistance * 1 r ja 125 o c/ w thermal resistance * 2 250 o c/w junction temperature t j 150 o c lead temperature(10s) t l 260 o c storage temperature tstg - 55 ~ 150 o c esd ratings hbm 8000 v mm 400 v pa rameter symbol value unit operating supply voltage v in 2.5 5.5 v operating temperature range topr - 40 85 o c w l2803 k 3 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
electronics c haracteristics (ta=25 o c, v in =v out +1v, c in =c out =4.7 uf, unless otherwise noted) parameter symbol condition min. typ. max. unit output voltage v out v out <1.5v, v in =2.5v, i out =1ma v out - 30 mv v out v out + 30mv v v out R 1.5v , i out =1ma v out * 0.98 v out v out * 1.02 dropout voltage v drop v out = v out * 0.98, i out = 1 a 25 0 450 mv current limit i lim v in =5v 1.2 a line regulation v line v out = 3.3 v , v in = 4.3 ~ 6.0 v, i out =1ma 5 10 mv load regulation v load v out = 3.3 v , i out =1~ 8 0 0ma 10 30 mv quiescent current i q v out = 3.3 v, i out =0 150 200 u a power supply ripple rejection psrr v in =(v out +1v) dc +0.2 v p - p f = 1k hz ,i out =1 0ma 6 5 db v in =(v out +1v) dc +0.2 v p - p f=10khz, i out =10ma 5 8 output n oise v oltage e no 10hz to 100khz, c out = 4.7 f 100 v p - p 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, i out =0ma 0.4 v thermal shutdown threshold t sd 165 o c thermal shutdown hysteresis t sd 30 o c w l2803 k 4 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical characteristics ( ta=25 o c, v in =v ou t +1v, c in =c out = 4.7 uf, unless otherwise noted ) quiescent c urrent vs. supply voltage output v oltage vs. supply voltage output voltage vs. output current quiescent c urre nt vs. ambient temperature output v oltage vs. ambient temperature output voltage vs. output current 3.0 3.5 4.0 4.5 5.0 5.5 6.0 100 110 120 130 140 150 160 170 180 190 200 v out =3.3v i out =0ma quiescent current: i q (ua) input voltage: v in (v) -50 -25 0 25 50 75 100 125 150 0 50 100 150 200 250 300 v out =3.3v i out =0ma quiescent current: i q (ua) ambient temperature: t a ( o c) -50 -25 0 25 50 75 100 125 150 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 output voltage: v out (v) i out =1ma ambient temperature: t a ( o c) 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 i out =800ma output voltage: v out (v) input voltage: v in (v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 v in =3.8v v in =4.2v v in =5.5v output voltage: v out (v) output current: i out (a) t a = -40 o c 0.0 0.4 0.8 1.2 1.6 2.0 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 v in =3.8v v in =4.2v v in =5.5v output voltage: v out (v) output current: i out (a) t a = 25 o c w l2803 k 5 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 3.0 3.5 4.0 4.5 5.0 5.5 6.0 100 110 120 130 140 150 160 170 180 190 200 v out =3.3v i out =0ma quiescent current: i q (ua) input voltage: v in (v) -50 -25 0 25 50 75 100 125 150 0 50 100 150 200 250 300 v out =3.3v i out =0ma quiescent current: i q (ua) ambient temperature: t a ( o c) -50 -25 0 25 50 75 100 125 150 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 output voltage: v out (v) i out =1ma ambient temperature: t a ( o c) 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 i out =800ma output voltage: v out (v) input voltage: v in (v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 v in =3.8v v in =4.2v v in =5.5v output voltage: v out (v) output current: i out (a) t a = -40 o c 0.0 0.4 0.8 1.2 1.6 2.0 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 v in =3.8v v in =4.2v v in =5.5v output voltage: v out (v) output current: i out (a) t a = 25 o c
output voltage vs. output current psrr startup with en dropout voltage vs. output current psrr shutdown with en 0 200 400 600 800 1000 0 50 100 150 200 250 300 v out =3.3v t a = 85 o c t a = 25 o c t a = -40 o c dropout voltage: v drop (mv) output current: i out (ma) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 v in = 4.3v+0.2v p-p v out = 3.3v i out = 10ma power supply ripple rejection: psrr (db) ripple frequency (hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 power supply ripple rejection: psrr (db) ripple frequency (hz) v in = 2.8v+0.2v p-p v out = 1.8v i o = 10ma 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 v in =3.8v v in =4.2v v in =5.5v output voltage: v out (v) output current: i out (a) t a =85 o c w l2803 k 6 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 0 200 400 600 800 1000 0 50 100 150 200 250 300 v out =3.3v t a = 85 o c t a = 25 o c t a = -40 o c dropout voltage: v drop (mv) output current: i out (ma) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 v in = 4.3v+0.2v p-p v out = 3.3v i out = 10ma power supply ripple rejection: psrr (db) ripple frequency (hz) 10 100 1000 10000 0 10 20 30 40 50 60 70 80 90 100 power supply ripple rejection: psrr (db) ripple frequency (hz) v in = 2.8v+0.2v p-p v out = 1.8v i o = 10ma 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 v in =3.8v v in =4.2v v in =5.5v output voltage: v out (v) output current: i out (a) t a =85 o c
line regulation load regulation w l2803 k 7 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
package outline dimensions sot - 89 - 5 l symbol dimensions in millimeter min. typ. max. a 1.400 1.500 1.600 b 0.320 0.420 0.520 b1 0.400 0.490 0.580 c 0.350 - 0.440 d 4.400 4.500 4.600 d1 1.550 ref. e 2.300 2.450 2.600 e1 3.940 4.100 4.250 e 1.500 typ. e1 3.000 typ. l 0.900 - 1.200 w l2803 k 8 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
order information ordering no. v out (v) packa ge operating temperature shipping WL2803K 18 - 5 /tr 1.8 sot - 89 - 5 l - 40 ~ +85 c 1 0 00 / tape and reel WL2803K 33 - 5 /tr 3.3 sot - 89 - 5 l - 40 ~ +85 c 1 0 00 / tape and reel w l2803 k 9 of 9 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
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