LTC3442(RevA) 데이터 시트보기 (PDF) - Linear Technology

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LTC3442
(Rev.:RevA)

Micropower Synchronous Buck-Boost DC/DC Converter with Automatic Burst Mode Operation

Linear Technology 

SI PLIFIED BLOCK DIAGRA

SW1

SW2

4

6

LTC3442

VIN 9

RLIM 10

RT 2

SW A

SW B

GATE

DRIVERS

AND

ANTICROSS

CONDUCTION

SW D

SW C

REVERSE

AMP

–

AV = 6

1V +

AVERAGE

ILIM

PEAK CURRENT

+

LIMIT

5A –

VIN

+

2.3V

–

UVLO

PWM

LOGIC

PWM

COMPARATORS

SLEEP

OSC

+

Gm = 1/60k

3A –

ERROR

AMP

1.22V

AUTOMATIC

BURST MODE

CONTROL AND

VC HOLD

SHDN/SS 1

VIN

SHUTDOWN

SOFT-START

VCC

SHUTDOWN

VREF

SS

1.22V

VREF

THERMAL

SHUTDOWN

8 VOUT

12 FB

11 VC

7 BURST

2

PGND

6

SGND

3442 BD

3442fa

7

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