AP1509 View Datasheet(PDF) - Diodes Incorporated.

Part Name

Description

MFG CO.

AP1509

150KHz, 2A PWM BUCK DC/DC CONVERTER

Diodes Incorporated. 

AP1509

150KHz, 2A PWM BUCK DC/DC CONVERTER

Pin Descriptions

Pin Name

VIN

Output

GND

FB

SD

Description

Operating voltage input

Switching output

Ground

Output voltage feedback control

ON/OFF Shutdown

Functional Block Diagram

SD

Current

Source

bias

1.235V

Reference

2.5V

Regulator

Start

up

200mV

220mV

+

Com_p

VIN

Comp

+

+

Frequecy

FB

_Amp

compen-

sation

Comp

+

Pre-

driver

2A

Switch

150kH

OSzC.

Thermal

Shutdown

Output

GND

AP1509

Document number: DS31016 Rev. 4 - 2

3 of 13

www.diodes.com

June 2010

© Diodes Incorporated

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