AP1533

PWM CONTROL 1.8A STEP-DOWN CONVERTER

AP1533 Rev. 4

3 of 9

JULY 2009

DS31192

www.diodes.com

Block Diagram

Oscillation

Circuit

Reference

Voltage Source

PWM-Switched

Control Circuit

+

-

EN

90uA

OCSET

FB

Thermal

Shutdown

Output

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

ESD HBM Human Body Model ESD Protection

8

KV

ESD MM

Machine Model ESD Protection

500

V

V

Feedback Pin Voltage

V

EN Pin Voltage

V

Switch Pin Voltage

V

Power Dissipation

Internally limited

mW

Operating Junction Temperature Range

-20 to +125

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 conditions.

Recommended Operating Conditions

Symbol

Parameter

Min

Max

Unit

Input Voltage

4

23

V

Output Current

0

1.8

A

Operating Ambient Temperature

-25

85