IR43x1

© 2013 International Rectifier

Lead Definitions

Pin #

Symbol

Description

1

VAA

Floating input positive supply

2

GND

GND for internal shunt zener diodes to VAA and VSS

3

IN+

Analog non-inverting input

4

IN-

Analog inverting input

5

COMP

PWM comparator input

6

CSD

Shutdown timing capacitor / shutdown input

7

VSS

Floating input negative supply

8

VCC

Low side supply

9

COM

Low side supply return, internally connected to VN

10

VN

Negative power supply, internally connected to COM externally

11

VS

PWM output

12

VP

Positive power supply

13

VB

High side floating supply, referenced to VS

14

CSH

High side over current sensing input, referenced to VS

15

SUB

Internally connected to COM (Do not use as supply return)

Lead Assignments (Top View)

12

11

10

15

9

8

7

13

14

6

5

4

3

2

1

April 22, 2013