1/17

www.rohm.com

2009.05 - Rev.A

© 2009 ROHM Co., Ltd. All rights reserved.

Single-chip built-in FET type Switching Regulator Series

Output 1.5A or Less High Efficiency

Step-down Switching Regulators

with Built-in Power MOSFET

BD9102FVM, BD9104FVM, BD9106FVM

●

Description

ROHM’s high efficiency step-down switching regulator (BD9102FVM, BD9104FVM, BD9106FVM) is a power supply

designed to produce a low voltage including 1.24 volts from 5 volts power supply line. Offers high efficiency with our

original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster

transient response to sudden change in load.

●

Features

1) Offers fast transient response with current mode PWM control system.

2) Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET)

and SLLM

3) Incorporates soft-start function.

4) Incorporates thermal protection and ULVO functions.

5) Incorporates short-current protection circuit with time delay function.

6) Incorporates shutdown function

7) Employs small surface mount package MSOP8

●

Use

Power supply for HDD, power supply for portable electronic devices like PDA, and power supply for LSI including CPU and

ASIC

●

Lineup

Parameter

BD9102FVM

BD9104FVM

BD9106FVM

Vcc voltage

4.0～5.5V

4.5～5.5V

4.0～5.5V

Output voltage

1.24V±2%

3.30V±2%

Output current

0.8A Max.

0.9A Max.

0.8A Max.

UVLO Threshold voltage

2.7V Typ.

4.1V Typ.

3.4V Typ.

Short-current protection with time delay function

built-in

built-in

built-in

Soft start function

built-in

built-in

built-in

Standby current

0μA Typ.

0μA Typ.

0μA Typ.

Operating temperature range

-25～+85℃

-25～+85℃

-25～+85℃

Package

MSOP8

MSOP8

MSOP8

●

Absolute Maximum Rating (Ta=25℃)

Parameter

Symbol

Limits

Unit

VCC voltage

-0.3～+7

*1

V

PVCC voltage

-0.3～+7

*1

V

EN voltage

EN

-0.3～+7

V

SW,ITH voltage

SW,ITH

-0.3～+7

V

Power dissipation 1

Pd1

387.5

*2

mW

Power dissipation 2

Pd2

587.4

*3

mW

Operating temperature range

Topr

-25～+85

℃

Storage temperature range

Tstg

-55～+150

℃

Maximum junction temperature

Tjmax

+150

℃

*1

Pd should not be exceeded.

*2

Derating in done 3.1mW/℃ for temperatures above Ta=25℃.

*3

Derating in done 4.7mW/℃ for temperatures above Ta=25℃,Mounted on 70mm×70mm×1.6mm Glass Epoxy PCB

No.09027EAT34