WS4603E 80m , adjustable current limit , power distribution switch descriptions the WS4603E is high - side switch with ultra - low on r esistance p - mosfet. integrated current - limit function can limit inrush current for heave capacitive load, over load curren t, and short - circuit current to protect power source. the WS4603E is also integrated reverse protection function to eliminate any reverse current flow across the switch when the device is off. output auto - discharge while the device shutdown made output v oltage off quickly. thermal shutdown function can protect the device and load. the WS4603E is available in sot - 23 - 5l pac kage. standard product is pb - free and halogen - free. features ? input voltage range : 2.5~5.5 v ? main switch r on : 80m @ v in =5v ? adj . current limit range : 0.4 ~2 a (typ.) ? current limit accurate : +/ - 20% ? auto discharge ? reverse block (no body diode ) ? over temperature protection applications ? usb peripherals ? usb dongle ? usb 3g data card ? 3.3v or 5v power switch ? 3.3v or 5v power distribution sot - 23 - 5l pin configuration (top view) 4603 = device code yy = year code ww = week code marking order i nformation device package shipping ws4603 e - 5/tr s ot - 23 - 5l 3000/reel&tape 1 2 3 4 5 out gnd en in iset 1 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 1 2 3 4 5 out gnd en in iset
i n o u t c u r r e n s e n s e d r i v e r u v l o + - i n o u t r e v e r s e v o l t a g e p r o t e c t i o n t h e r m a l p r o t e c t i o n c u r r e n t l i m i t e n g n d c u r r e n t l i m i t s e t t i n g i s e t typical applications pin descriptions pin number symbol descriptions 1 out output pin 2 gnd ground pin 3 iset current limit programming pin. connect a resistor rset from this pin to gnd to program the current limi t: i lim (a)=6800/rset (ohm) 4 en enable pin, active high 5 in input pin block diagram 1 2 4 3 5 out gnd en in v in v out off on c in 1 uf c out 1 uf iset r set WS4603E 2 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification i n o u t c u r r e n s e n s e d r i v e r u v l o + - i n o u t r e v e r s e v o l t a g e p r o t e c t i o n t h e r m a l p r o t e c t i o n c u r r e n t l i m i t e n g n d c u r r e n t l i m i t s e t t i n g i s e t 1 2 4 3 5 out gnd en in v in v out off on c in 1 uf c out 1 uf iset r set
absolute maximum ratings 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 specifica tion is not implied and prolonged exposure to extreme conditions may affect device reliability. recommend operating conditions parameter symbol value unit in pin voltage r ange v in - 0.3 6.5 v out pin voltage range v out - 0.3~6.5 v iset pin voltage ran ge v flg - 0.3~6.5 v en pin voltage range v en - 0.3~6.5 v junction temperature t j - 40~150 o c lead temperature(soldering, 10s) t l 260 o c storage temperature tstg - 55 ~ 150 o c in, out pin esd ratings hbm 8000 v mm 400 v iset , en pin esd ratings hbm 4000 v mm 400 v parameter symbol value unit supply input voltage r ange v in 2.5 5.5 v operating ambient temperature t a - 40 85 o c thermal resis tance r ja 250 o c/w WS4603E 3 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
electronics characteristics (ta=25 o c, v in= 5v, c in =c out =1uf, unless otherwise noted) parameter symbol conditions min. typ. max. units quiescent supply current i q i out =0, v in =v en = 5v 48 60 ua shutdown current i sd v en =0v 1 ua reverse current i rev v in =v en =0v, v out =5v, current flow to v in 1 ua main - fet on resistance (1) r on v in =v en =5v, i out =500ma 80 m auto - discharge fet on resistance r dchg v en =0v, v in =v out =5v 65 over - current trip threshold i oc rset=6.8k 0.8 1 1.2 a short - circuit output current i o s v out shorted to gnd , rset = 6.8k 0. 4 5 a over - current threshold range ioc(min) 0.4 a ioc(max) 2 a short circuit current limiting response time t short v out shorted to gnd , c l =1uf 3 us en input low volt age v il v in =5v 0.4 v en input high voltage v ih v in =5v 2.0 v out pin turn - on time after en on t on c l =1uf, r l =5ohm 20 us over - temperature shutdown threshold t sd 160 o c over - temperature threshold hy steresis t hys 35 o c under voltage lock out threshold v uvlo 2.2 v under voltage lock out hysteresis v uvlo - hys 200 mv (1) pulse test, t p =380us WS4603E 4 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical characteristics (ta=25 o c, unless otherwise noted) 100 150 200 250 300 350 400 450 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v out (v) i out (ma) v in =5v r set =17k 0 200 400 600 800 1000 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v out (v) i out (ma) v in =5v r set =6.8k output voltage vs. output current output voltage vs. output current 0 400 800 1200 1600 2000 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v out (v) i out (ma) v in =5v r set =3.4k 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.25 0.30 0.35 0.40 0.45 0.50 0.55 r set =17k current limit(a) input voltage(v) output voltage vs. output current current limit vs. input voltage 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 r set =6.8k current limit(a) input voltage(v) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 r set =3.4k current limit(a) input voltage(v) current limit vs. input voltage current limit vs. input voltage WS4603E 5 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 100 150 200 250 300 350 400 450 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v out (v) i out (ma) v in =5v r set =17k 0 200 400 600 800 1000 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v out (v) i out (ma) v in =5v r set =6.8k 0 400 800 1200 1600 2000 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v out (v) i out (ma) v in =5v r set =3.4k 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.25 0.30 0.35 0.40 0.45 0.50 0.55 r set =17k current limit(a) input voltage(v) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 r set =6.8k current limit(a) input voltage(v) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 r set =3.4k current limit(a) input voltage(v)
2.5 3.0 3.5 4.0 4.5 5.0 5.5 50 60 70 80 90 100 110 120 r on (m ? ) input voltage(v) i out =0.5a r set =6.8k -50 -25 0 25 50 75 100 125 50 60 70 80 90 100 110 r on (m ? ) temperature(c 0 ) v in =5v r set =6.8k i out =0.5a on resistance vs. input voltage on resistance vs. temperature -50 -25 0 25 50 75 100 125 0.25 0.30 0.35 0.40 0.45 0.50 0.55 v in =5v r set =17k current limit(a) temperature(c 0 ) -50 -25 0 25 50 75 100 125 0.80 0.85 0.90 0.95 1.00 1.05 1.10 v in =5v r set =6.8k current limit(a) temperature(c 0 ) current limit vs. temperature current limit vs. t emperature -50 -25 0 25 50 75 100 125 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 current limit(a) temperature(c 0 ) v in =5v r set =3.4k 2.5 3.0 3.5 4.0 4.5 5.0 5.5 30 35 40 45 50 55 60 quiescent current(ua) input voltage(v) r set =6.8k no load current limit vs. temperature quiescent current vs. input voltage WS4603E 6 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification 2.5 3.0 3.5 4.0 4.5 5.0 5.5 50 60 70 80 90 100 110 120 r on (m : ) input voltage(v) i out =0.5a r set =6.8k -50 -25 0 25 50 75 100 125 50 60 70 80 90 100 110 r on (m : ) temperature(c 0 ) v in =5v r set =6.8k i out =0.5a -50 -25 0 25 50 75 100 125 0.25 0.30 0.35 0.40 0.45 0.50 0.55 v in =5v r set =17k current limit(a) temperature(c 0 ) -50 -25 0 25 50 75 100 125 0.80 0.85 0.90 0.95 1.00 1.05 1.10 v in =5v r set =6.8k current limit(a) temperature(c 0 ) -50 -25 0 25 50 75 100 125 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 current limit(a) temperature(c 0 ) v in =5v r set =3.4k 2.5 3.0 3.5 4.0 4.5 5.0 5.5 30 35 40 45 50 55 60 quiescent current(ua) input voltage(v) r set =6.8k no load
package outline dimensions sot - 23 - 5l symbol dimensions in millimeter min. typ. max . a 1.050 - 1.250 a1 0.000 - 0.100 a2 1.050 - 1.150 b 0.300 - 0.500 c 0.100 - 0.200 d 2.820 2.900 3.020 e 1.500 1.600 1.700 e1 2.650 2.800 2.950 e 0.950(bsc) e1 1.800 - 2.000 l 0.300 - 0.600 0 - 8 WS4603E 7 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
|
