RT9203 データシートの表示（PDF） - Richtek Technology

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RT9203

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

Richtek Technology 

RT9203/A

Preliminary

MU

COUT

D

1000uF

L

5uH

G

S

C1 C2

CVCC

1uF

GND

VCC

BOOT

RT9203/A

CBOOT

0.1uF

1uF 470uF

ML

D

GS

GND Return

Layout Placement

Layout Notes

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

2. Put RT9203/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

-

0.8

Reference

Power on

Reset

Soft Start

-

+UVP

1V -

+OVP

-

0.5V +UVP

0.8V

+

Error - Error SS

Amplifier

+

+PWM

-

6.0V

Regulation

Control

Logic

VCC

GND

300kHz

Oscillator

BOOT

UGATE

LGATE

www.richtek.com

4

DS9203/A-10 March 2007

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