RT9205A Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Fabricante

RT9205A

Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller

Richtek Technology 

RT9205/A

Preliminary

COUT

1000uF

L

5uH

CVCC

1uF

GND

VCC

BOOT

RT9205/A

CBOOT

0.1uF

MU

D

G

S

ML

D

G

S

CIN1 CIN2

1uF 470uF

GND Return

Layout Placement

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

GND

VCC

+

LDO

-

0.8

Reference

Power on

Reset

Soft Start

-

+UVP

1V -

+OVP

-

0.5V +UVP

0.8V

+

- Error SS

Amplifier

+

+PWM

-

6.0V

Regulation

Control

Logic

VCC

300kHz

Oscillator

BOOT

UGATE

LGATE

www.richtek.com

4

DS9205/A-08 March 2007

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