115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

2916

DUAL FULL-BRIDGE

MOTOR DRIVER

3

24

23

22

21

20

19

18

17

16

15

14

13

GROUND

GROUND

2B

OUT

2

E

2A

OUT

1A

OUT

1

E

1B

OUT

01

I

LOAD SUPPLY

Dwg. PP-047

1

2

3

4

5

6

7

8

9

12

11

10

9

GROUND

GROUND

02

I

12

I

2

RC

1

RC

11

I

LOGIC SUPPLY

1

2

2

1

GND

GND

GND

GND

7

8

9

10

11

12

13

14

15

16

17

29

30

39

38

37

36

35

34

33

32

31

Dwg. PP-006A

1

2

PWM 1

PWM 2

1

2

NC

NC

50

75

100

125

150

5

1

0

TEMPERATURE IN °C

4

3

2

25

Dwg. GP-035B

R

= 6.0°C/W

SUFFIX 'B', R

= 40°C/W

SUFFIX 'LB', R

= 55°C/W*

SUFFIX 'EB', R

= 30°C/W

JT

JA

JA

JA

*Measured on a single-layer board, with 1 sq. in. of 2 oz copper area.

For additional information, refer to the Allegro Web site.

PWM CURRENT-CONTROL CIRCUITRY

TRUTH TABLE

PHASE

H

H

L

L

L

H

Copyright © 1994, 2003, 2007 Allegro MicroSystems, Inc.

Dwg. EP-007B

V

BB

SENSE

ONE

SHOT

SOURCE

DISABLE

RC

–

+

10

E

OUT A

OUTB

'B' PACKAGE,

CHANNEL 1

PIN NUMBERS

SHOWN.

RC

RS

RT

CC

CT

24

20 k

40 k

10 k

21

1

23

22

14

20

17

15