3694(RevA) View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

3694
(Rev.:RevA)

36V, 2.6A Monolithic Buck Regulator With Dual LDO

Linear Technology 

LT3694/LT3694-1

BLOCK DIAGRAM

OUT2

BIAS

OUT1

EN/UVLO

+

0.5V –

–

+

1.2V

OUT1

RLIM2

LIM2

60mV

–

+

DRV2

3μA

TRK/SS2

0.75V

FB2

+

+ SD

–

–

0.68V

+

INT REG

AND REF

LDO

0.9V

3

+

–

SLOPE

COMP

CLK

RT SYNC

(LT3694)

CLKOUT

(LT3694-1)

MASTER

OSC

CLK

VIN

OVERVOLTAGE

SHUTDOWN

PGOOD

THERMAL

SHUTDOWN

LDO

PG1

60mV

LIM3

OUT1

RLIM3

DRV3

3μA

TRK/SS3

SD

0.75V

FB3

OUT3

0.68V

BUCK

VIN

BIAS

VIN

CIN

R

SO

BST

C3

SW

L1

OUT1

D1

C1

DA

VC1

Cf

RC

CC

GND

–

ILIMIT

+ CLAMP

2V

ERROR

AMP

0.75V

FB1

3μA

R1

R2

0.68V

TRK/SS1

PG1

36941 F01

Figure 1. LT3694 Block Diagram with Typical External Components

36941fa

8

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