KA3050

11

Application Information

1. Zoom And Reel Motor Drive Block (1.5-Channel Dc Motor Drive Block)

This block diagram describes the driver of zoom and reel motor in camera systems.

The drive block is controlled by MC1~4 and SC1~4, which are come from micro controller.

Follow is the control logic table.

INPUT

OUTPUT

L

LL

H

LLLL

LH

-

LH

L

H

L

-

LH

H

L

L

-

HL

H

-

HL

HH

L

-

L

H

HHH

-

L

L

DC Motor Control

Block

20

21

22

DM

3

DM

2

DM

1

MC

SC

M

M

V

E