preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com ? page 1 500ma positive voltage regulators (preliminary) SE8119 features low dropout performance. guaranteed 500ma output current. wide input supply voltage range. over-temperature and over-current protection. rugged 3kv esd withstand capability. available in sot-89-3l packages. description the SE8119 series of high performance low dropou t voltage regulators are designed for applications tha t require efficient conversion and fast transien t response. pin configuration 1 2 3 sot-89 top view absolute maximum rating symbol parameter maximum units v in input supply voltage 9 v t j operating junction tem perature range 0 to 125 c t stg storage temperature range -40 to 150 c t lead lead temperature (soldering 10 sec) 260 c application pc-camera active scsi terminators. high efficiency linear regulators. 5v to 3.3v linear regulators motherboard clock supplies. ordering information SE8119 _ _ _ pin (1=>3): 1. g: out/gnd/in 2. n: gnd/in/out package type: 1. k: sot-89-3l output voltage: a: v out = 3.3v typical application
preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com ? page 2 500ma positive voltage regulators (preliminary) SE8119 electrical characteristic v in,max 8v, 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 (1) SE8119t33 3.234 3.3 3.366 v v sr line regulation (1) v out + 1.5v < v in < 8v i out = 10ma -- 0.3 -- % v lr load regulation (1) (v in - v out ) = 1.5v 10ma i out 500ma -- 0.4 -- % i q quiescent current -- 10 -- ma v d dropout voltage (2) i out = 500ma -- 1.0 -- v i o minimum load current -- 4 -- ma i cl current limit -- 0.8 -- a t c temperature coefficient -- 0.07 -- %/c otp thermal protection -- 175 -- 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 = 22 f (tantalum), (v in - v out ) = 3v, i out = 500ma -- 35 -- db notes: 1. low duty cycle pulse testing with which t j remains unchanged. 2. ? v out = 1%.
preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com ? page 3 500ma positive voltage regulators (preliminary) SE8119 application hints like any linear voltage regulator, SE8119 requires external capacitors to ensure stability. the external capacitors must be carefully selected to ensure performance. thermal considerations it is important that the thermal limit of the package is not exceeded. the SE8119 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 application 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 around 150c/w for SE8119. SE8119 is designed to enter thermal protection at 175c. for example, if t a is 25c then the maximum p d is limited to about 1.0w. in other words, i f i out(max) = 500ma, then [v in ? v out ] can no t exceed 2.0v. input capacitor a n input capacitor of at least 10 f is required. ceramic or tantalum can be used. the value can be increase without upper limit. output capacitor a n output capacitor is re quired 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 22 f bu t may be increase without limit.
preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com ? page 4 500ma positive voltage regulators (preliminary) SE8119 load transients c out = 22 f, c in = 10 f i load = 10ma ? 0.5a output voltage vs. junction temperature 3.10 3.15 3.20 3.25 3.30 3.35 3.40 -25 0 25 50 75 100 125 150 junction temperature (c) output voltage dropout voltage vs output current 1.022 1.023 1.024 1.025 1.026 1.027 1.028 1.029 1.03 0 100 200 300 400 500 output current (ma) dropout voltage (v) line transients c in = 0.1 f, c out =1 f v in = 4.5v ? 5.5 v
preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com ? page 5 500ma positive voltage regulators (preliminary) SE8119 customer support seaward electronics incorporated ? china rm 1605, building 1, international pioneering park, #1 shangdi xinxi rd 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, minquan 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 - 1/23/2006 outline drawing for sot-89-3l a b c d e f g h i j k l m sot-89 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
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