ISL6526 データシートの表示（PDF） - Intersil

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ISL6526

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Intersil 

Typical Application - 5V Input

+5V

VIN

ISL6526, ISL6526A

DISABLE

VCC

CT1

OCSET

ROCSET

CPVOUT

ISL6526, ISL6526A

N/C CT2

DBOOT

CIN

CPGND

GND

BOOT

UGATE

CBOOT

PHASE

ENABLE

COMP

LGATE

FB

CBULK

CHF

Q1

LOUT

COUT

Q2

CI

RF

CF

ROFFSET

RFB

VOUT

Block Diagram

VCC

CPVOUT

CT1

CT2

CPGND

OCSET

CHARGE

PUMP

20μA

+

-

OC

COMPARATOR

POWER-ON

RESET (POR)

SOFT-START

+

0.8V

-

ERROR

AMP

+

-

PWM

COMPARATOR

+

-

GATE

CONTROL

PWM LOGIC

FB

COMP

4

OSCILLATOR

FIXED 300kHz or 600kHz

GND

ENABLE

BOOT

UGATE

PHASE

LGATE

FN9055.8

March 20, 2007

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