RT9221 데이터 시트보기 (PDF) - Richtek Technology

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RT9221

Programmable Synchronous PWM Buck Converter with 1.5V/2.5V Dual Low Dropout Linear Regulator Controller

Richtek Technology 

Function Block Diagram

RT9221

VCC CSN CSP

SHDN

VID4

VID3

VID2

VID1

VID0

1.25V REF

70mV

CURRENT LIMIT

DAC

OSCILLATOR

R

Q

S

VSEN

PGOOD

OPEN

DRAIN

_

200KHz

LEVEL SHIFT

AND DRIVER

SHOOT-

THROUGH

CONTROL

_

VCC

_

OVP

ERROR AMP

DRIVER

LDOS1

GATE1

GND

LINEAR

CONTROLLER

2.5V

1.265V

REF

LINEAR

CONTROLLER

1.5V

BSTH

DH

PGNDH

BSTL

DL

PGNDL

LDOV

GATE2 LDOS2 GND

DS9222-05 May 2001

www.richtek-ic.com.tw

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