Jul 2007

V0.24P

F72820

Table of Content

1.

General Description ..................................................................................................................... 1

2.

Feature List .................................................................................................................................. 1

3.

Pin Configuration ......................................................................................................................... 2

4.

Block Diagram.............................................................................................................................. 2

5.

Pin Description ............................................................................................................................. 3

6.

Function Description .................................................................................................................... 4

6.1

Bootstrap Operation ................................................................................................................. 4

6.2

Dual Power Operation.............................................................................................................. 4

6.3

Soft-Start .................................................................................................................................. 5

6.4

Over-current Protection............................................................................................................ 5

6.5

Under-voltage Protection ......................................................................................................... 6

6.6

Output Voltage Selection.......................................................................................................... 7

6.7

Converter Shut Down............................................................................................................... 7

6.8

PWM Controller Feedback Compensation............................................................................... 7

6.9

Typical Characteristic ............................................................................................................... 9

7.

Electrical Characteristic.............................................................................................................. 11

8.

Ordering Information .................................................................................................................. 12

9.

Package Dimensions (8-SOP/150 mil)....................................................................................... 13

10.

Application Circuit ...................................................................................................................... 14