Pin Assignment

No. 7677-3/6

LB11651H

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Top view

15

16

17

18

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

LB11651H

Truth Table

X: H or L

PHASE

BRAKE

ST

PWM

OA

OB

Operating mode

H

L

H

H

H

L

Forward

L

L

H

H

L

H

Reverse

X

L

H

L

OFF

OFF

Output off

X

H

H

X

H

H

Brake

X

X

L or OPEN

X

OFF

OFF

Standby mode (circuits off)

Pin Functions

Pin No.

Pin

Pin function

1

OA

Output

36

OB

Output

10

VHS

High side current sensing (Insert an external resistor between VM and VHS. When the voltage across this resistor reaches 0.5 V,

the outputs are turned off.)

8

VLS

Low side current sensing (Insert an external resistor between VLS and ground. When the voltage across this resistor reaches

0.5 V, the outputs are turned off.)

13

C

Connection for an external filter capacitor that prevents incorrect operation of the current sensing output shutdown and thermal

shutdown circuits.

9

VM

Motor system power supply

11

Logic system power supply

24

PHASE

Forward/reverse switching pin

25

BRAKE

Brake control input. A high input switches the IC to brake mode.

12

ST

Standby mode control. The IC operates in standby mode when this pin is low or open.

23

PWM

PWM input. High: on

Low: off

27

R

26

GND

Ground

28

DiGND

Lower side regeneration diode ground connection

Other pins

N.C.

No connect pins