RT9259A View Datasheet(PDF) - Richtek Technology

Part Name

Description

Manufacturer

RT9259A

12V Synchronous Buck PWM DC-DC and Linear Power Controller

Richtek Technology 

RT9259A

Function Block Diagram

VREF

FBL

DRV

Voltage

Reference

REF_OUT

0.8V

VREF1

VCC12

-

+

+

Inhibit

0.4V

-

+

-

VREF2

+

Bias

Power

On Reset

5V

Regulator

5VDD

POR

OC +

Soft-Start

-

&

Fault Logic

0.4V 40uA

SSE

PH_M

-

+

1.5V

RT_DIS

GND

Shutdown

Oscillator

SSE

+

+ EA

-

+

-

PWM

Inhibit

Driver

Logic

FB

COMP

VCC12

OCSET

BOOT

UGATE

PHASE

LGATE

PGND

www.richtek.com

4

DS9259A-02 March 2007

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