Datasheet

Datasheet

6/20

TSZ02201-0M2M0BC12010-1-2

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

2.May.2013 Rev.003

www.rohm.com

TSZ22111・15・001

BU24031GW

●Description of Blocks

Current Driver (5ch Driver)

Built-in constant current driver.

The voltage of RNF pin and the external resistor (RRNF) determine the amount of output current. The internal

high-precision amplifier (CMOS gate input) is used for constant current control. If any resistance component exists in

the wirings of RNF pin and the external resistor (RRNF), the precision can be reduced. To avoid this, pay utmost

attention to the wirings.

(1) Control

(ⅰ)Register Control

The constant current drive is executed by the output current value, the current direction and the current ON/OFF which

are controlled by the register settings.

(ⅱ)External Pin Control

The constant current drive is executed by the output current value and the current direction which are controlled by the

register settings. Constant current driving ON/OFF is controlled by IN5 pin.

Host

Current value

Direction

ON/OFF

CSB

SCLK

SDATA

3

VCM

Control

Logic

SIF

Current control

DAC

C.C.

Current value

Direction

CSB

SCLK

SDATA

3

VCM

Control

Logic

Current control

DAC

C.C.

Host

IN5

ON/OFF

SIF