LTC3538EDCB-TRPBF Просмотр технического описания (PDF) - Linear Technology

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LTC3538EDCB-TRPBF

800mA Synchronous Buck-Boost DC/DC Converter

Linear Technology 

BLOCK DIAGRAM

LTC3538

L1

+

VIN

2.4V TO 5.5V

CIN

VIN

8

+

2A –

+

3.5A –

+

2.3V –

BURST

4

1 = BurstMode OPERATION

0 = FIXED FREQUENCY

5μs

DELAY

SW1

7

A

B

ANTI-RING

GATE DRIVERS

AND

ANTICROSS

CONDUCTION

AVERAGE

CURRENT LIMIT

SW2

6

D

0.5A

C

–+

REVERSE

CURRENT

LIMIT

VOUT

5

VOUT

R1

CZ1

COUT

PEAK

CURRENT LIMIT

UVLO

PWM LOGIC

AND

PWM

OUTPUT PHASING COMPARATORS

THERMAL

SHUTDOWN

OSC

1MHz

BURST

BURST

MODE

CONTROL

SLEEP

SS DONE

FB

GND

3

1V

SOFT-START

FB

1

CP1

CP2

RZ

R2

VC

2

TSD

UVLO

INTERNAL

SOFT-START

3538 BD

OFF ON

3538fb

7

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