KA3021D 查看數據表（PDF） - Fairchild Semiconductor

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KA3021D

4-Channel Motor Driver

Fairchild Semiconductor 

KA3021D

Pin Definitions

Pin Number

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Pin Name

DO1−

DO1+

IN1

IN1.1

OPIN+

OPIN−

MUTE1, 4

GND

OPOUT

VCC2

NC

DO2+

DO2−

GND

REV

FWD

DO3−

DO3+

CTL

IN3

VCC3

VCC1

REF

IN4.1

IN4

DO4+

DO4−

GND

I/O

Pin Function Description

O

Drive1 output (−)

O

Drive1 output (+)

I

Drive1 input

I

Drive1 input gain adjust

I

Op-amp input (+)

I

Op-amp input (−)

I

CH1, 4 mute

-

Ground

O

Op-amp output

I

Power supply for CH2 and signal

-

No connection

O

Drive2 output (+)

O

Drive2 output (−)

-

Ground

I

CH2 reverse

I

CH2 forward

O

Drive3 output (−)

O

Drive3 output (+)

I

CH2 motor speed control

I

Ch3 input

I

Power supply for CH3

I

Power supply for CH1,4

I

Bias voltage input

I

Drive4 input gain adjust

I

Drive4 input

O

Drive4 output (+)

O

Drive4 output (−)

-

Ground

3

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