LTC3774 데이터 시트보기 (PDF) - Linear Technology

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LTC3774

Dual, Multiphase Current Mode Synchronous Controller

Linear Technology 

FUNCTIONAL BLOCK DIAGRAM

PHSMD

MODE/PLLIN

ITEMP

HIZB

FREQ

PLL-SYNC

MODE/SYNC

DETECT

TEMPSNS

0.6V

F

VIN

5.5V

REG

INTVCC

CLKOUT

ICOMP

OSC

S

RQ

–

+ IREV

ILIM

SLOPE

COMPENSATION

INTVCC

UVLO

1

R

ITHB

ACTIVE CLAMP

FCNT

ON

BURST EN

INTVCC

SWITCH

LOGIC

AND

ANTISHOOT-

THROUGH

RUN

OV

PWM

PWMEN

SNSA+

SNS–

PGOOD

0.555V

UV

SLEEP

VIN

0.6V

REF

0.55V

SS

RUN

EA

0.5V

1.22V

OV

1.25µA

0.645V

GND

ITH RC CC1

RUN

TK/SS CSS

1µA/5µA

LTC3774

SNSD+

AMP

DIFFAMP

VOUT

1/2

VOSNS+

20k

20k

VOSNS–

3774 BD

NOTE: FUNCTIONAL BLOCK DIAGRAM SHOWS 1 CHANNEL ONLY. THE 2 CHANNELS ARE IDENTICAL.

3774f

For more information www.linear.com/LTC3774

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