RT8009 datasheet(3/13 Pages) RICHTEK | 1.25MHz, 600mA, High Efficiency PWM Step-Down DC/DC Converter

Part Name

Description

RT8009

1.25MHz, 600mA, High Efficiency PWM Step-Down DC/DC Converter ( 13 Page)

RICHTEK

3 page

RT8009

DS8009-03 March 2007

www.richtek.com

Function Block Diagram

Functional Pin Description

Pin Number

Pin Name

Pin Function

VIN

Power Input.

GND

Ground.

Chip Enable (Active High, do not leave EN pin floating, and VEN < VIN + 0.6V).

FB/VOUT

Feedback Input Pin.

Pin for Switching.

COMP

RS1

RS2

VIN

FB/VOUT

UVLO &

Power Good

Detector

REF

Slope

Compensation

Current

Sense

OSC &

Shutdown

Control

Zero

Detector

Current

Limit

Detector

Driver

Control

Logic

PWM

Comparator

Error

Amplifier

GND

1 2 3 4 5 6 7 8 9 10 11 12 13

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