RT9205/ACS Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Fabricante

RT9205/ACS

5V/12V Synchronous Buck PWM DC-DC Controller

Richtek Technology 

RT9205/A

Preliminary

Layout Placement

+ COUT

100 0µF

C V CC

1 µF

GND

VCC

BOOT

RT9205/A

CBOOT

0. 1µ F

MU

D

L

G

S

5µ H

ML

D

C1

+ C2

1µF

470 µF

G

S

GND Return

Layout Notes

1. Put C1 & C2 to be near the MU drain and ML source nodes.

2. Put RT9205/A to be near the COUT

3. Put CBOOT as close as to BOOT pin

4. Put CVCC as close as to VCC pin

Function Block Diagram

VCC

DRV

FBL

FB

VCC

LDO _

0.8V

Ref erenc e

Pow er

on Reset

UVP

1V

OVP

Soft Start

6.0V

Regulator

0.5 V

0.8V

Error Amp

UVP

SS

PWM

Control

Logic

VCC

GND

300 kHz

Oscillator

BOOT

UGATE

LGATE

www.richtek.com

4

DS9205/A-03 May 2003

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