KA3050 查看數據表（PDF） - Fairchild Semiconductor

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KA3050

Camera Motor Drive and Control IC

Fairchild Semiconductor 

SC1

L

L

L

L

L

L

L

L

H

H

H

H

H

H

H

H

3. Ired Drive Block

INPUT

SC2

SC3

L

L

L

L

L

H

L

H

H

L

H

L

H

H

H

H

L

L

L

L

L

H

L

H

H

L

H

L

H

H

H

H

IRI

31

MC1~MC4

IRED Control Block

SC1~SC4

KA3050

VCOIL OUTPUT VOLTAGE [V]

SC4

L

1.80

H

1.99

L

2.18

H

2.37

L

2.56

H

2.75

L

2.94

H

3.13

L

3.32

H

3.51

L

3.70

H

3.89

L

4.08

H

4.27

L

4.46

H

4.65

IRO

23

IRED

26

FBR

RC

The block drives infrared emitting diode (IRED).

The FBR voltage (VFBR) is controlled by MC codes and SC codes.

The IRED current ( IIRED ) is determined by VFBR and resistor Rc.

i.e.,

IIRED = VFBR / RC

13

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