Document Number: 66550

S11-1638-Rev. B, 15-Aug-11

www.vishay.com

3

Vishay Siliconix

SiC403

This document is subject to change without notice.

FUNCTIONAL BLOCK DIAGRAM

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is

not implied. Exposure to absolute maximum rating/conditions for extended periods may affect device reliability.

Note:

For proper operation, the device should be used within the recommended conditions.

Gate Drive

Control

On-Time

Generator

+

-

Zero Cross

Detector

FB Comparator

Soft Start

Reference

26

29

4, 30,

PAD 1

Control and Status

EN/PSV

1

31

2

3

FB

Valley1-Limit

Bypass Comparator

A

B

Y

LDO

32

ENL

MUX

DL

27

8

BST

LX

15 to 22

13, 23 to 25,

28, PAD 3

6, 9-11, PAD 2

5

FBL

7

SS

Parameter

Symbol

Min.

Max.

Unit

- 0.3

+ 30

V

- 2

+ 30

- 0.3

+ 30

- 0.3

- 0.3

+ 6

- 0.3

+ 0.3

- 0.3

- 0.3

- 0.3

+ 35

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Input Voltage

328

V

35.5

0.75

5.5

THERMAL RESISTANCE RATINGS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Storage Temperature

- 40

+ 150

°C

Maximum Junction Temperature

-

150

Operation Junction Temperature

- 25

+ 125