WS3202K over voltage and over current protection ic descriptions the WS3202K is an over-voltage-protection (ovp) and over-current-protection (ocp) device. the device will switch off internal mosfet to disconnect in to out to protect load when any of input voltage, input current over the threshold. the over temperature protection (otp) function mo nitors chip temperature to protect the device. the WS3202K is available in sot-89-3l package. standard products are pb-free and halogen-free. features high voltage technology maximum input voltage : 30v maximum output current : 2a output power on time : 8ms (typ.) ovp threshold : 6.1v (typ.) ovp response time : <1us ocp threshold : 2a (min.) output discharge package : sot-89-3l applications gps pmp mid pad digital cameras digital videos sot-89-3l pin configuration (top view) ws3202 = device code yy = year ww = week marking order information device package shipping WS3202K-3/tr sot-89-3l 1000/reel&tape 123 ws3202 yyww 1 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical applications block diagram pin descriptions pin no. symbol descriptions 1 out output pin, connect to load 2 gnd power ground 3in input pin, connect to ac adaptororvbus.a1uflow esr ceramic capacitor or larger must be connected as close as to this pin. it is recommended to use 50v capacitor or according to application. WS3202K 2 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
absolute maximum ratings parameter symbol value unit input voltage (in pin) v in -0.3 ~ 30 v output voltage (out pin) v out -0.3 ~ 6.5 v output current i out 2.0 a 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 8 kv mm 1 kv note: these are stress ratings only. stresses exceeding the range specified under 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 implie d and prolonged exposure to extreme conditions may affect device reliability. *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 calculated by p d =(v in -v out )xi out recommend operating conditions (ta=25 o c, unless otherwise noted) parameter symbol value unit input voltage v in 3~26 v output current i out 1.5 a ambient operating temperature topr -40 ~ 85 o c WS3202K 3 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
electronics characteristics (ta=25 o c, unless otherwise noted) *3: single pulse, pulse width=10ms parameter symbol test conditions min. typ. max. unit dc characteristics and power-on-reset input quiescent current i q v in =5v, i out =0a 280 350 ua in-to-out on resistance * 3 r on v in =5v, i out =0.7a 190 220 m output discharge resistance r discharge 500 under voltage lock out threshold uvlo v in increasing from 0~3v 2.3 2.8 v under voltage lock out hysteresis v hys-uvlo v in decreasing from 3~0v 200 250 300 mv output power-on time t on v in = 0 -> 5v to output on 6 8 10 ms input over-voltage-protection (ovp) ovp threshold v ovp v in increasing from 5~7v 5.8 6.1 6.4 v ovp hysteresis v hys-ovp v in decreasing from 7~5v 200 300 400 mv ovp active time t ovp v in = 5 -> 10v 1 us ovp recovery time t on(ovp) v in =10->5vtooutputon 6 8 10 ms input over-current-protection (ocp) ocp threshold i ocp 2.0 2.5 3.3 a ocp active time t ocp 176 us ocp recovery time t on(ocp) 1s over-temperature-protection (otp) otp threshold 165 o c otp hysteresis 40 o c WS3202K 4 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical characteristics (ta=25 o c, unless otherwise noted) ovp threshold vs. temperature uvlo threshold vs. temperature output voltage vs. output current ocp threshold vs. temperature in-to-out on resistance vs. temperature on resistance vs. output current -50 -25 0 25 50 75 100 125 5.7 5.8 5.8 5.9 6.0 6.1 6.2 v in decreasing ovp threshold, v ovp (v) temperature, t a ( o c) v in increasing -50 -25 0 25 50 75 100 125 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 ocp threshold, i ocp (a) temperature, t a ( o c) -50 -25 0 25 50 75 100 125 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 v in decreasing uvlo threshold, v uvlo (v) temperature, t a ( o c) v in increasing -50 -25 0 25 50 75 100 125 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24 0.26 0.28 0.30 i out = 0.7a dc on resistance, r on ( ) temperature, t a ( o c) 0 500 1000 1500 2000 2500 3.0 3.5 4.0 4.5 5.0 5.5 6.0 t a =-40 o c t a =85 o c t a =25 o c output voltage, v out (v) load current, i out (ma) v in =5v i out =dc current 0 500 1000 1500 2000 2500 0.12 0.14 0.16 0.18 0.20 0.22 0.24 0.26 0.28 0.30 0.32 0.34 t a =-40 o c t a =85 o c v in =5v i out =dc current t a =25 o c on resistance, r on ( ) load current, i out (ma) WS3202K 5 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
normally power on ovp active time ocp active time power on with input overvoltage ovp recovery time ocp recovery time WS3202K 6 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
normally power off WS3202K 7 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
package outline dimensions sot-89-3l 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 e1.500typ. e1 3.000 typ. l 0.900 - 1.200 WS3202K 8 of 8 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
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