ISL8012(2008) 查看數據表（PDF） - Intersil

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ISL8012
(Rev.:2008)

2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator

Intersil 

Block Diagram

ISL8012

EN

VFB

PG

RSI

SOFT-START

SHUTDOWN

BANDGAP 0.8V

EAMP

27pF

390k

OSCILLATOR

+

COMP

+

MODE

SHUTDOWN

PWM/PFM

LOGIC

CONTROLLER

PROTECTION

DRIVER

0.864V

+

+

0.736V

SLOPE

COMP

1ms

DELAY

+

OCP

+

CSA

1V

+

SKIP

0.25V

ZERO-CROSS

SENSING

SCP

0.2V +

FIGURE 2. FUNCTIONAL BLOCK DIAGRAM

VIN

LX

GND

3

FN6616.0

March 11, 2008

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