LTC3440 データシートの表示（PDF） - Linear Technology

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LTC3440

Micropower Synchronous Buck-Boost DC/DC Converter

Linear Technology 

BLOCK DIAGRA

LTC3440

VIN

2.5V TO 5.5V

7

+

SW1

3

SW A

SW B

GATE

DRIVERS

AND

ANTICROSS

CONDUCTION

SW2

4

SW D

–0.4A

SW C

ISENSE

AMP

REVERSE

CURRENT

LIMIT

VOUT

6

VOUT

2.5V TO 5.5V

SUPPLY

CURRENT

LIMIT

+

ERROR

AMP

1.22V

2.7A

–

UVLO

+

PWM

LOGIC

AND

OUTPUT

PHASING

PWM

COMPARATORS

R1

FB

9

CLAMP

2.4V

–

RT RT

1

OSC

SYNC

MODE/SYNC 2

1 = Burst Mode

OPERATION

0 = FIXED FREQUENCY

SLEEP

Burst Mode

OPERATION

CONTROL

5μs DELAY

5

GND

SHUTDOWN

VC

10

R2

SHDN/SS RSS

8

VIN

CSS

3440 BD

3440fb

7

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