Data Sheet

340kHz, 3A Synchronous DC-DC Buck Converter

AP3503

May. 2012

Rev. 1. 7

BCD Semiconductor Manufacturing Limited

4

Absolute Maximum Ratings (Note 1)

Parameter

Symbol

Value

Unit

IN Pin Voltage

-0.3 to 20

V

EN Pin Voltage

V

SW Pin Voltage

21

V

BS Pin Voltage

V

FB Pin Voltage

-0.3 to 6

V

COMP Pin Voltage

-0.3 to 6

V

SS Pin Voltage

-0.3 to 6

V

Thermal Resistance

θ

JA

60

ºC/W

Operating Junction Temperature

150

ºC

Storage Temperature

-65 to 150

ºC

Lead Temperature (Soldering, 10sec)

260

ºC

ESD (Human Body Model)

2000

V

ESD (Machine Model)

200

V

Note 1: Stresses greater than 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 under “Recommended Operating Conditions” is not implied. Exposure to “Absolute

Maximum Ratings” for extended periods may affect device reliability.

Recommended Operating Conditions

Parameter

Symbol

Min

Max

Unit

Input Voltage

4.5

18

V

Operating Ambient Temperature

-40

85

ºC