Datasheet

Datasheet

7/22

TSZ02201-0M2M0BC12090-1-2

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

18.Apr.2013 Rev.002

www.rohm.com

TSZ22111・15・001

BU24038GW

●Description of Blocks

Current Driver (9ch 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 the 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)Resistor 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 Control1

The constant current drive is executed by the output current value which is controlled by the register setting. Constant

current direction and turning ON/OFF are controlled by IN pin.

(ⅲ) External Pin Control2

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

register setting. Constant current driving ON/OFF is controlled by IN pin.

Host

Current value

Direction

ON/OFF

CSB

SCLK

SDATA

3

VCM

Control

Logic

Current control

DAC

C.C.

Current value

CSB

SCLK

SDATA

3

VCM

Control

Logic

SIF

Current control

DAC

C.C.

Host

IN

Direction

ON/OFF

Current value

Direction

CSB

SCLK

SDATA

3

VCM

Control

Logic

Current control

DAC

C.C.

Host

IN

ON/OFF

2

SIF

SIF