RT8805C 데이터 시트보기 (PDF) - Richtek Technology

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RT8805C

Two Phase General Purpose PWM Controller

Richtek Technology 

RT8805C

Preliminary

Function Block Diagram

RT8805CxQV (VQFN-16L 3x3)

PGOOD

FB

COMP

SS

AGND

IMAX

VCC

RT

0.8V +

EA

-

External

Soft Start

VCC

PWMCP

-

+

PWM1

Logic

VCC

VCC

PWMCP

+

PWM2

-

Logic

VCC

CLK1

Reg

Clock

RAMP1 RAMP2

CLK2

Current

Balance

OCP

VDD OC

CLK1

CLK2

-

MUX PHASE2

S/H

GM+

PHASE1

To PWM Logic

PGOOD

Central

Logic

OC

BOOT1

UGATE1

PHASE1

LGATE1

BOOT2

UGATE2

PHASE2

LGATE2

GND

RT8805CxQVA (VQFN-24L 4x4)

PGOOD

PI

FB

COMP

SS

AGND

IMAX

VCC

RT

0.8V

VREF_SEL +

EA

-

External

Soft Start

VCC

PWMCP

-

+

PWM1

Logic

VCC

VCC

PWMCP

+

PWM2

-

Logic

VCC

CLK1

Reg

Clock

RAMP1 RAMP2

CLK2

Current

Balance

OCP

VDD OC

CLK1

CLK2

-

MUX PHASE2

S/H

GM+

PHASE1

To PWM Logic

PGOOD

Central

Logic

OC

BOOT1

UGATE1

PHASE1

LGATE1

BOOT2

UGATE2

PHASE2

LGATE2

GND

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4

DS8805C-03 August 2007

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