KA3050 查看數據表（PDF） - Fairchild Semiconductor

零件编号

产品描述 (功能)

生产厂家

KA3050

Camera Motor Drive and Control IC

Fairchild Semiconductor 

KA3050

2. Af Motor And Ae Meter Drive Block (Stepping Motor Drive Block)

MC1~MC4

VSI

Stepping Motor

Control Block

SC1~SC4

SM1

18

SM2

17

SM3

16

SM4 SM5

15

14

The block diagram describes the driver of AF motor and AE meter in camera systems.

The drive output is selected by MC signals (MC1~4).

These MC codes are as follows.

MC1

H

INPUT

MC2

MC3

L

L

L

H

L

H

H

L

H

L

H

H

H

H

MC4

H

L

H

L

H

L

H

SM1

-

-

-

L

L

H

H

SM2

-

-

-

H

H

L

L

OUTPUT

SM3

-

-

-

L

H

L

H

The output voltage (VCOIL) is determined by SC1~4.

The VCOIL is potential difference between drive output and ground.

i.e.,

VCOIL = VSM - GND.

The VCOIL is selected by following table.

SM4

L

H

L

H

L

H

L

SM5

H

L

L

-

-

-

-

12

Share Link: