revision 5/9/2012 pr eliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com .cn ? page 1 features ? low dropout performance. ? guaranteed 8 00ma output current. ? wide input supply voltage range. ? over - t emperature and over - current protection. ? rugged 3kv esd withstand capability. ? available in sot - 89- 3l and sot - 2 2 3 - 3l packages. description the se81 19 series of high performance low dropout voltage regulators are designed for applications that require efficient conversion and fast transient response. pin configuration application ? pc - camer a ? active scsi terminators. ? high efficiency linear regulators. ? 5v to 3.3v linear regulators ? motherboard clock supplies. typical application adjustable voltage regulator fixed voltage regulator SE8119-adj cout 22uf cin 10uf r1 124 r2 24.9 p1 p2 p3 vin>=3v vout=1.5v vref iadj SE8119-3.3v cout 22uf cin 10uf p1 p2 p3 vin>=4. 8v vout=3.3v io 2 out ref adj 2 1 r v =v (1+ )+i r r ordering/ marking information device marking information package information SE8119 ak xlf SE8119 akx l f /hf sot -8 9 a denotes 3.3v, k denotes sot - 89, x denotes pin options ( g:out/gnd/in n: gnd/in/out t:gnd/out/in) SE8119 adj lf SE8119 adj lf /hf adjustable output voltage. note: lf/hf mean for lead free or halogen free ,marking for special order
revision 5/9/2012 pr eliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com .cn ? page 2 absolute maximum rating symbol parameter m aximum units v in input supply voltage 9 v t j operating junction temperature range 0 to 125 c t stg storage temperature range - 40 to 150 c t lead lead temperature (soldering 10 sec) 260 c electrical characteristic v in,max 8 v , v in,min ? v out = 1.5v , i out = 10ma, c in = 10f, c out = 22f, t j = 0 ? 125c, unless otherwise specified. symbol parameter test condition min typ max units v o output voltage SE8119 - 3 . 3 3.234 3.3 3.366 v v ref reference voltage (adj. voltage version) (v in - v out ) = 1.5v i out = 10ma ( - 2%) 1.250 (+2%) v v sr line regulation v out + 1.5v < v in < 8 v i out = 10ma -- 0.3 -- % v lr load regulation (1) (v in - v out ) = 1.5v 10ma i out 8 00m a -- 1.2 -- % i q quiescent current -- 2.6 -- ma i adj adjust pin current -- 51 -- a ? i adj adjust pin current change v out + 1.5v < v in < 8 v 10ma i out 800m a -- 6 -- a v d dropout voltage (1), (2) i out = 8 00ma -- 1. 5 -- v i o minim um load current -- 0.4 -- ma v i cl current limit (1) -- 0.9 -- a t c temperature coefficient -- 0.0 5 -- %/c otp thermal protection -- 1 50 -- c v n rms output noise t a = 25c, 10hz f 10khz -- 0.003 -- %v o r a ripple rejection ratio f = 120hz, c out = 22f (tantalum), (v in - v out ) = 2 v, i out = 1 0 m a -- 58 -- db notes: 1. low duty cycle pulse testing with which t j remains unchanged. 2. ? v out = 1%. ordering/ marking information device marking information package v out se811 9txx lf se811 9 txx lf /hf sot -223 fixed output voltages; x deno tes voltage options ( 1.5v, 1.8v, 2.5v , 3.3v and 5.0v ). se811 9talf se811 9 ta lf /hf adjustable output voltage.
revision 5/9/2012 pr eliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com .cn ? page 3 application hints like any lin ear voltage regulator, se81 19 requires external capacitors to ensure stability. the external capacitors must be carefully selected to ensure performance. thermal considerations it i s important that the thermal limit of the package is not exceeded. the se8 119 has built - in thermal protection. when the thermal limit is exceeded, the ic will enter protection, and v out will be pulled to ground. the power dissipation for a given applica tion can be calculated as following: the power dissipation (p d ) is p d = i out * [v in ? v out ] the thermal limit of the package is then limited to p d(max) = [t j ? t a ]/ ja where t j is the junction temperature, ta is the ambient temperature, and ja is aroun d 150c/w for SE8119. SE8119 is designed to enter thermal protection at 1 50 c. for example, if t a is 25c then the maximum p d is lim ited to about 1.0w. in other words, if i out = 5 00ma, then [v in ? v out ] can not exceed 2 v. input capacitor an input capacitor of at least 10f is required. ceramic or tantalum can be used. the value can b e increase d w ithout upper limit. output capacitor an output capacitor is required for stability. it must be placed no more than 1 cm away from the v out pin, and connected directly between v out and gnd pins. the minimum value is 22f but may b e increase d withou t limit.
revision 5/9/2012 pr eliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com .cn ? page 4 psrr vs frequency 30.0 35.0 40.0 45.0 50.0 55.0 60.0 100 1000 10000 frequency (hz) psrr (db) output voltage vs junction temperature 3.290 3.300 3.310 3.320 3.330 3.340 3.350 3.360 25 45 65 85 105 125 junction temperature (c) output voltage (v) dropout voltage vs load current 0.9 1 1.1 1.2 1.3 1.4 1.5 0 200 400 600 800 load current (a) output voltage (v) output voltage vs load current 3.315 3.32 3.325 3.33 3.335 3.34 3.345 3.35 3.355 3.36 0 200 400 600 800 load current (ma) output voltage (v)
revision 5/9/2012 pr eliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com .cn ? page 5 outline drawing for sot - 89- 3l outline drawing for sot - 223 min max min max a 0.173 0.181 4.400 4.600 b 0.159 0.167 4.050 4.250 c 0.067 0.075 1.700 1.900 d 0.051 0.059 1.300 1.500 e 0.094 0.102 2.400 2.600 f 0.035 0.047 0.890 1.200 g h i 0.016 0.020 0.400 0.520 j 0.055 0.063 1.400 1.600 k 0.014 0.016 0.350 0.410 l m 3.00ref 1.50ref 0.118ref 0.059ref 0.70ref 10typ 0.028ref 10typ dim n inches mm dimensions a b c d e f g h i j k l m sot-89
revision 5/9/2012 pr eliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com .cn ? page 6 customer support seaward electronics incorporated ? china section b, 2nd floo r, shangdi scientific office complex, #22 xinxi road haidian district, beijing 100085, china tel: 86 - 10- 8289 - 5700 /01/05 fax: 86 - 10- 8289 - 5706 seaward electronics corporation ? taiwan 2f, #181, sec. 3, min q uan east rd, taipei, taiwan r.o.c tel: 886 - 2 - 2712 - 0307 fax: 886 - 2 - 2712 - 0191 seaward electronics incorporated ? north america 1512 centre pointe dr. milpitas, ca95035, usa tel: 1 - 408- 821 - 6600 last updated - 5/9/2012
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