○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays

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TSZ02201-0M2M0BC12090-1-2

© 2013 ROHM Co., Ltd. All rights reserved.

18.Apr.2013 Rev.002

TSZ22111・14・001

www.rohm.com

Datasheet

System Lens Drivers

μ-step System Lens Driver

for Digital Still Cameras

BU24038GW

●General Description

BU24038GW is a system Lens Driver that uses μ-step

driving to make the configuration of the sophisticated,

high precision and low noise lens driver system possible.

This IC has a built-in driver for both DC motor and voice

coil motor and a μ-step controller that decreases CPU

power. Therefore, multifunctional lens can be applied.

●Features

Built-in 9 channels Driver block

1ch-8ch: Voltage control type H-bridge

(Adaptable to STM 3systems)

9ch: Current control type H-bridge

Built-in 3 channels PI driving circuit

Built-in 4 channels Waveforming circuit

Built-in PLL circuit

●Applications

Digital still cameras

●Key Specifications

Digital Power Supply Voltage:

2.7V to 3.6V

Driver Power Supply Voltage:

2.7V to 5.5V

Output Current (1ch-9ch):

±500mA(Max)

Input Clock Frequency:

1MHz to 28MHz

FET ON Resistance (1ch-8ch):

1.5

Ω(Typ)

FET ON Resistance (9ch):

1.0

Ω(Typ)

Operating Temperature Range:

-20℃ to +85℃

●Package

USCP75M3

3.80mm x 3.80mm x 0.85mm

●Typical Application Circuit

Example1

5ch

Driver

DVSS

OUT5A

OUT5B

DVDD

6ch/7ch

Driver

OUT6A

OUT6B/7B

MVCC12

OUT1A

OUT1B

OUT2A

OUT2B

OUT3A

OUT3B

MVCC34

MVCC567

VDDAMP

M

OUT4A

OUT4B

MVCC8

MGND12

MGND34

MGND8

MGND9

MGND567

M

2ch

Driver

3ch

Driver

4ch

Driver

1ch

Driver

8ch

Driver

OUT8A

OUT8B

OUT9A

OUT9B

RNF9

9ch

Driver

Photo interrupter

M

OUT7A

Main Host

Logic