ISL8024 Просмотр технического описания (PDF) - Intersil

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ISL8024

Compact Synchronous Buck Regulator

Intersil 

ISL8023, ISL8024

SS

SSOoFfTt

START

SHUTDOWN

COMP

55pF

100k

EN BANDGAP VREF

EAMP

-

VFB

6k

3pF

+

0.6V

-

+

SLSOloPpEe

COMP

OV

-

0.85*VREF

+ UV

PG

SGND

1ms

DELAY

FS SYNC

SHUTDOWN

VDD

OSCILLATOR

+

COMP

-

PWM/PFM

LOGIC

CONTROLLER

PROTECTION

HS DRIVER

+

OCP

-

+

SKIP

-

+

CSA

-

ISET

THRESHOLD

NEG CURRENT

SENSING

VIN

P

PHASE

LS

DRIVER

N

PGND

0.5V

-

SCP

+

ZERO-CROSS

SENSING

100

SHUTDOWN

FIGURE 4. FUNCTIONAL BLOCK DIAGRAM

5

FN7812.2

May 17, 2012

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