LTC3853_15 datasheet(10/36 Pages) LINER

Part #	LTC3853

Description	Triple Output, Multiphase Synchronous Step-Down Controller

Download	36 Pages

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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10 / 36 page

LTC3853

10

3853fc

For more information www.linear.com/LTC3853

FUNCTIONAL DIAGRAM

4.7V

–

+

–

+

VIN

0.5µA

SLOPE

COMPENSATION

UVLO

SLOPE RECOVERY

ACTIVE CLAMP

OSC

S

RQ

3k

RUN

SWITCH

LOGIC

AND

ANTI-

SHOOT

THROUGH

BG

ON

FCNT

0.8V

OV

1

51k

1.2V

0.64V

ITH RC

INTVCC

ILIM

ITHB

ICMP

CC1

EA

SS

SGND

R1

0.86V

R2

RUN

PGND

PGOOD

INTVCC

EXTVCC

IREV

SW

TG

CB

VIN

CIN

VIN

SLEEP

BOOST

BURSTEN

–

+

–

+

UV

OV

CVCC

VOUT

COUT

M2

M1

L1

DB

MODE/PLLIN

SENSE+

SENSE–

0.8V

REF

TK/SS

RUN

0.55V

VFB

FREQ/PLLFLTR

PLL-SYNC

MODE/SYNC

DETECT

+

5V

REG

1.3µA

CSS

+

–

+

–

+

F

0.74V

3853 FD

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