LTC3737 View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC3737

Dual 2-Phase, No RSENSE™, DC/DC Controller with Output Tracking

Linear Technology 

W

FU CTIO AL DIAGRA

LTC3737

VIN

CIN

M1

L1

D1

COUT

VOUT1

VIN

SENSE1+

IPROG1

PVIN1

SW1

VOLTAGE

VREF

REFERENCE 0.6V

UNDERVOLTAGE UV

LOCKOUT

CMSD

VIN

UVSD

SLOPE1

–

ICMP

+

VIN

0.5µA

RUN/SS

CSS

t = 1ms

INTERNAL

SOFT-START

EXTSS

–

INTSS + MUX

+

0.3V

SOFT-

START

CLK1

S

Q

R

SWITCHING

LOGIC AND

BLANKING

CIRCUIT

+

0.15V

–

SLEEP1

BURSTDIS

OV1

OVP

SC1

SCP

PGOOD1

OV1

PGATE1

PGND

0.68V

0.12V

ITH1

0.54V

BURST DEFEAT

SYNC/MODE

CLOCK DETECT

PLLLPF

BURSTDIS

PHASE

DETECTOR

VIN

PGOOD

VOLTAGE

CONTROLLED CLK1

OSCILLATOR

CLK2

SLOPE

COMP

SLOPE1

SLOPE2

PGOOD1

PGOOD2

DUPLICATE FOR SECOND CHANNEL

VREF = 0.6V

VFB2

TRACK

R2B

R2A

VOUT2

–

+ EAMP2

+

ITH1

ITH2

EAMP1

VFB1

VREF = 0.6V

SOFT-START

SGND

UVSD

R1B RTRACKB

RC

CC

R1A

RTRACKA

3737 BD

3737f

7

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