ISL97701IRZ-T13 datasheet(2/10 Pages) INTERSIL

Part #	ISL97701IRZ-T13

Description	Boost Regulator with Integrated Schottky and Input Disconnect Switch

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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2

FN6474.1

February 22, 2008

Block Diagram

STATE MACHINE

(DEFAULT SEQUENCE)

1. SOFT INRUSH

2. VDDOUT ENABLE

3. SOFT BOOST 25

4. SOFT BOOST 50

5. SOFT BOOST 75

6. NORMAL

NSYNC

NEN

FB

VDD

SYNCHRONIZATION

SIGNAL DETECTOR

OSCILLATOR

OVER-TEMPERATURE

DETECTOR

MUX

UNDERVOLTAGE

DETECTOR

OVERCURRENT

DETECTOR (DC)

OVER-

VOLTAGE

DETECTOR

VDD

VDDOUT

VOUT

LX

GND

VOLTAGE

REFERENCE

ERROR

AMP

CCOMP CLAMP

SLOPE

COMPENSATION

RAMP-GENERATOR

CONTROL LOGIC

-PWM TIMING

-CURRENT LIMIT

-PULSE SKIPPING

EN

CURRENT

LIMIT

COMPARATOR

GATE

DRIVER

+

-

+

As

-

+

-

Av

+

-

Ai

Σ = 0

START

CLK

RESTART DISABLE AND WAIT

RSENSE

S2

2

1

0

VDD

ISL97701

FIGURE 1. ISL97701 BLOCK DIAGRAM

GND

ISL97701

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ISL97701IRZ-T13 Datasheet(PDF) 2 Page - Intersil Corporation

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