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www.rohm.com

2010.04 - Rev.C

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c

2010 ROHM Co., Ltd. All rights reserved.

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

Output 1.5A or Less High Efficiency

Step-down Switching Regulator

with Built-in Power MOSFET

BD9150MUV

●

Description

ROHM’s high efficiency dual step-down switching regulator BD9150MUV is a 2ch output power supply designed to produce

a low voltage including 3.3,1.2 volts from 5.0 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 (Pch/Nch FET)

and SLLM

3) 2ch output power supply.

4) Each of EN controls 2ch output.

5) Incorporates soft-start function.

6) Incorporates ULVO functions.

7) Incorporates thermal protection and short-current protection circuit with time delay function.

8) Incorporates shutdown function Icc=0μA(Typ.)

9) Output current max 1.5A/1.5A.

10) Employs small surface mount package : VQFN020V4040

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Use

Power supply for LSI including DSP, Micro computer and ASIC

●

Absolute Maximum Rating (Ta=25℃)

Parameter

Symbol

Limit

Unit

Vcc Voltage

-0.3～+7 *

1

V

EN Voltage

-0.3～+7

V

-0.3～+7

V

SW Voltage

-0.3～+7

V

-0.3～+7

V

Power Dissipation

Pd1

0.34*

2

W

Pd2

0.70 *

3

W

Pd3

1.21 *

4

W

Pd4

3.56*

5

W

Operating Temperature Range

Topr

-40～+85

℃

Storage Temperature Range

Tstg

-55～+150

℃

Maximum Junction

Tjmax

+150

℃

*1

Pd should not be exceeded.

*2

IC only

*3

1-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm

2

*4

4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm

*5

4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 5505mm

No.10027ECT13