AP5725

WHITE LED STEP-UP CONVERTER

AP5725 Rev. 1

3 of 16

JUNE 2009

www.diodes.com

Block Diagram

1.2MHz

Oscillator

RAMP

Generator

Σ

-

+

0.25V

VIN

3

FB

Rc

Cc

Comparator

A2

CONTROL

LOGIC

A1

1

Driver

SW

Q1

2 GND

4

EN

Enable

6

OTP

5

OVP

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

VIN Pin Voltage

-0.3~7

V

SW Voltage

-0.3~34

V

OVP Pin Voltage

-0.3~35

V

Feedback Pin Voltage

-0.3~7

V

EN

EN

-0.3~7

V

Maximum Junction Temperature

150

Lead Temperature

300

Storage Temperature Range

-65 to +150

Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be

exceeded under any condition.