RT9209A データシートの表示（PDF） - Richtek Technology

部品番号

コンポーネント説明

メーカー

RT9209A

Synchronous Buck PWM DC-DC with Enable & PGOOD

Richtek Technology 

RT9209/A

CVCC

1uF

COUT

1000uF

L

5uH

GND

VCC

BOOT

RT9209/A

CBOOT

0.1uF

MU

D

GS

Diode

CIN1 CIN2

1uF 470uF

Layout Placement

GND Return

Layout Notes

1. Put CIN1 & CIN2 to be near the MU drain and ML source nodes.

2. Put RT9209/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

PGOOD

FB

GND

+

-

PGOOD

0.72V

0.8

Reference

Power on

Reset

Soft Start

1V -

+OVP

-

0.5V +UVP

0.8V

+

- Error SS

Amplifier

PWM Loop

Compensation

+

+PWM

-

260kHz/300kHz

Oscillator

6.5V

Regulation

Control

Logic

VCC

BOOT

SS

UGATE

LGATE

DS9209/A-08 March 2007

www.richtek.com

3

Share Link: