MB3802 데이터 시트보기 (PDF) - Fujitsu

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MB3802

Power Management Switch

Fujitsu 

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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