MB3802
7. Low-side Switch
VINA
VINB
SWINA
SWOUTA
GND
SWINB
SWOUTB
DLYA DLYB
RA
RB
Load A
Load B
VSB
3 V to 5 V
VSA
3 V to 5 V
VIN = 3 V,VS = 3 V
Switch-ON time
Switch-OFF time
80 µs
5.0 ms
RA and RB = 10 MΩ
VIN = 5 V,VS = 5 V
45 µs
3.5 ms
Notes:
1. Make this connection to control the switch ON/OFF at the lower load side.
2. To assist the switch-OFF circuit operation driven by the SWIN power supply, connect high
resistances (RA and RB = 5 to 10 MΩ) to the DLY pins without overloading the DC/DC converter.
3. At this connection, the switch-OFF time is longer than the switch-ON time.
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