BD8964FVM(2009) Ver la hoja de datos (PDF) - ROHM Semiconductor

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BD8964FVM
(Rev.:2009)

Low Noise High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

ROHM Semiconductor 

Single-chip Type with Built-in FET Switching Regulator Series

Low Noise High Efficiency

Step-down Switching Regulator

with Built-in Power MOSFET

BD8964FVM

No.09027EAT23

●Description

ROHM’s high efficiency step-down switching regulator BD8964FVM is a power supply designed to produce a low voltage

including 1 volts from 5/3.3 volts power supply line. Offers high efficiency with 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)

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 LSI including DSP, Micro computer and ASIC

●Line up

Parameter

VCC Voltage

PVCC Voltage

Symbol

VCC

PVCC

Limits

Unit

-0.3～+7 *1

V

-0.3～+7 *1

V

EN Voltage

VEN

-0.3～+7

V

SW,ITH Voltage

Power Dissipation 1

Power Dissipation 2

VSW,VITH

Pd1

Pd2

-0.3～+7

V

387.5*2

mW

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.

●Operating Conditions (Ta=25℃)

Parameter

VCC Voltage

PVCC Voltage

EN Voltage

Output voltage Setting Range

SW average output current

＊4 Pd should not be exceeded.

Symbol

VCC *4

PVCC *4

VEN

VOUT

Isw *4

Limits

Unit

Min.

Typ.

Max.

4.0

5.0

5.5

V

4.0

5.0

5.5

V

0

-

VCC

V

1.0

-

1.8

V

-

-

1.2

A

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

1/13

2009.05 - Rev.A

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