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WT6621
Dual USB Power Control Switch
Version1.0
27 March, 2000
Weltrend Semiconductor, Inc. All Rights Reserved
Absolute Maximum Ratings
Supply voltage(Vin)
+6.0V
Output voltage(Vo)
+6.0V
Output current(Io)
internallly limited
Fault Flag voltage(VFG)
+6.0V
Fault Flag current(IFG)
50mA
Control Input(VEN)
-0.3V to 12V
Storage Temperature(TS)
-65
°C to +150°C
Lead Temperature(Soldering 5 sec.)
260
°C
Operating Ratings
Supply voltage(VIN)
+4V to +5.5V
Ambient Operating Temperature(TA)
-40
°C to +85°C
Supply Voltage (VIN)
+3V to 5.5V
Continuous output current, Io
0.6A Max.
ELECTRICAL CHARACTERISTICS
VIN=5.0V + 5% , Ta=25 OC)
Parameter
Condition
Min
Typ
Max
Units
Switch off, Open load
0.75
2
uA
Supply Current
Switch on, Open load
110
150
uA
Low to high transition
2.1
2.4
V
Enable Input Treshold
voltage
High to low transition
0.8
1.6
V
Enable Input current
VEN = 0 to 5.5V
1
uA
Switch Reistnce
VIN = 5V, Iout=500mA
100
140
mOhm
Output Turn on delay
RL=10 Ohm each Output
0.5
ms
Output Turn on Rise Time RL=10 Ohm each Output
1
ms
Output Turn off Delay
RL=10 Ohm each Output
1
20
us
Output Turn off Fall Time RL=10 Ohm each Output
1
20
us
Continous Load Current
Each output
500
mA
Short Circuit Current Limit Each output, Vout = 4.0V
0.5
0.75
1.25
A
Current limit threshold
Ramp Load applied to Vout<4.0V
0.75
1.25
A
Tj increasing
135
C
Overtemperature
Shutdown Threshold
Tj decreasing
115
C
VIN increasing
2.5
V
UVLO Threshold
VIN dcreasing
2.3
V
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