BD2270HFV View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BD2270HFV

MOSFET Controller IC for Load Switching

ROHM Semiconductor 

BD2270HFV

●Application Circuit

1. Configuration of 3.3V load switch

3.3V

VIN_SWITCH

VOUT_SWITCH

3.3V

Load

Technical Note

VCC GATE DISC

ON/OFF

AEN

GND

BD2270HFV

Fig.35 Configuration of 3.3V Load Switch

2. Configuration of 5V load switch

5V

5V

Load

VCC GATE DISC

ON/OFF

AEN

GND

BD2270HFV

Fig.36 Configuration of 5V Load Switch

A 5V load switch can be configured like the 3.3V load switch. However, if the external N-channel MOSFET is low VGSS, clamp it

with Zener diode and the like.

3. Configuration of low-voltage load switch

1.2V

3.3V

1.2V

Load

VCC GATE DISC

ON/OFF

AEN

GND

BD2270HFV

Fig.37 Configuration of Low-voltage Load Switch

Providing BD2270HFV drive power supply enables configuration of a low-voltage load switch.

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2009.04 - Rev.A

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