LB1945D

No.7633-3/9

Pin Assignment

Pin Functions

Pin No.

Pin

Description

22

VBB1

Output stage power supply voltage

5

VBB2

High side diode cathode connection

24

6

E1

E2

The set current is controlled by inserting resistors RE between these pins and ground.

27

28

2

1

OUTA

OUTA

OUTB

OUTB

Output pins

15

GND

Ground

14

S-GND

Sense ground

4, 25

SUBGND

IC sub-ground

23

7

D-GND

Low side built-in diode ground (anode side)

8

CR

Chopping is performed at the period of a triangle wave set by the RC circuit connected to this pin.

The triangle wave off time is the noise cancellation time.

16

13

VREF1

VREF2

Output current settings.

(The output current is determined by providing an input in the range 1.5V to 5V.)

20

9

PHASE1

PHASE2

Output phase switching inputs

High-level input: OUTA = high, OUTA = low

Low-level input: OUTA = low, OUTA = high

19

10

ENABLE1

ENABLE2

Output on/off control inputs

High-level input: Output off

Low-level input: Output on

17, 18

12, 11

IA1, IA2

IB1, IB2

Output current setting digital inputs.

The output current is set to 1/3, 2/3 or 1 by input high/low levels to these pins.

21

VCC

Logic block power supply voltage

28

LB1945D

Top view

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

ILB01555