RT9210 Просмотр технического описания (PDF) - Richtek Technology

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RT9210

Dual 5V Synchronous Buck DC-DC PWM Controller for DDR Memory VDDQ and VTT Termination

Richtek Technology 

Function Block Diagram

Preliminary

RT9210

VCC

FB1

PGOOD

COMP1

VREF

VREE_IN

SENSE1

SENSE2

V2_SD

0.8V

Ref.

0.8V

137.5%

62.5%

OVP OV

&

UVP UV

Power

Good

++

EA

-

Power

On

Reset

Bias

POR OC

Soft-

Start

1

PWM1

+

-

OC

OV

UV

Thermal

SHDN

Control

Logic

200k 200k

300kHz

Oscillator

Zf

Window

Regulator

+

EA

-

FB2

Zc

- PWM2

+

OC

90 deg OV

shift

UV

Thermal

SHDN

Control

Logic

Thermal

SHDN

40uA

VCC

GNDA

OCSET/SD

BOOT1

UGATE1

PHASE1

PVCC1

LGATE1

PGND1

PGND2

LGATE2

UGATE2

BOOT2

DS9210-05 March 2007

www.richtek.com

5

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