3633A 查看數據表（PDF） - Linear Technology

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3633A

Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator

Linear Technology 

LTC3633A/LTC3633A-1

BLOCK DIAGRAM

OSC1

COMP

SELECT

140k

VIN 0.6V (LTC3633A)

1.5V (LTC3633A-1)

ION

ION

CONTROLLER

VON

RUN

1.22V

AV = 1

6V (LTC3633A)

12V (LTC3633A-1)

RUN

RUN

INTVCC

tON

=

VVON

IION

ICMP

+–

R

SQ

ON

SWITCH

LOGIC

AND

ANTI-

SHOOT

THROUGH

IREV

–+

TG

BG

SENSE–

SENSE+

CIN

VIN

BOOST

M1

SW

M2

PGND

CBOOST

L1

COUT

ITH

RC

CC1

PGOOD

–

0V

+

0.648V

–

TRACK

UV

SS

+ 0.552V

FB

–

EA

+

FC BURST

MODE

SELECT

IDEAL DIODES

0.6V

REF

INTERNAL

SOFT-START

INTVCC

1.4μA

TRACKSS

R2

R1

CSS

CHANNEL 1

RT

RRT

PHMODE

OSC1

OSC

PHASE

SELECT

OSC2

OSC

PLL-SYNC

0.48V AT START-UP

0.10V AFTER START-UP

CHANNEL 2 (SAME AS CHANNEL 1)

VIN1

3.3V

REG

MODE/SYNC

INTVCC

2.5V

V2P5

REG

SGND

CVCC

3633a BD

3633a1f

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