© Koninklijke Philips Electronics N.V. 2002.

Printed in The Netherlands

All rights are reserved. Reproduction in whole or in part is prohibited without the prior

written consent of the copyright owner.

The information presented in this document does not form part of any quotation or

contract, is believed to be accurate and reliable and may be changed without notice. No

liability will be accepted by the publisher for any consequence of its use. Publication

thereof does not convey nor imply any license under patent- or other industrial or

intellectual property rights.

Date of release: 5 November 2002

Document order number: 9397 750 10578

Contents

Philips Semiconductors

PIP401

OR-ing Intelligent Switch

1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

4

Ordering information . . . . . . . . . . . . . . . . . . . . . 1

5

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2

6

Pinning information . . . . . . . . . . . . . . . . . . . . . . 2

7

Functional description . . . . . . . . . . . . . . . . . . . 2

7.1

Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . 3

7.2

Voltage drop monitoring . . . . . . . . . . . . . . . . . . 3

7.2.1

Comparator. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

7.2.2

Remote sense input . . . . . . . . . . . . . . . . . . . . . 3

7.3

Driver and series power switch . . . . . . . . . . . . . 4

7.3.1

Soft turn-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

7.3.2

Low voltage drop . . . . . . . . . . . . . . . . . . . . . . . 4

7.3.3

Low current operation . . . . . . . . . . . . . . . . . . . . 4

7.3.4

Fast turn-off with no reverse current . . . . . . . . . 4

7.4

Overtemperature flag . . . . . . . . . . . . . . . . . . . . 5

8

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6

9

Thermal characteristics. . . . . . . . . . . . . . . . . . . 7

9.1

Transient thermal impedance . . . . . . . . . . . . . . 7

10

Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 8

11

Application information. . . . . . . . . . . . . . . . . . . 9

11.1

Parallel redundant operation. . . . . . . . . . . . . . . 9

11.2

Fault condition. . . . . . . . . . . . . . . . . . . . . . . . . 10

11.3

Overtemperature detection . . . . . . . . . . . . . . . 11

11.3.1

On-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

11.3.2

Off-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

12

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 13

13

Revision history . . . . . . . . . . . . . . . . . . . . . . . . 14

14

Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 15

15

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

16

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15