NX2117ACUTR datasheet(5/14 Pages) MICROSEMI

Part #	NX2117ACUTR

Description	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE

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Manufacturer	MICROSEMI [Microsemi Corporation]

Direct Link	http://www.microsemi.com

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5 / 14 page

NX2116/2116A/2116B/2117/2117A

5

Rev. 3.0

03/14/06

BLOCK DIAGRAM

Bias

Generator

1.25V

0.8V

BST

HDRV

SW

VCC

LDRV

FB

COMP

OSC

R

S

Q

Digital

start Up

UVLO

POR

1.25/1.15

EN

GND

Control

Logic

OCP

comparator

OCP

VCC

ramp

OC

START

Latch Out

OC

1.3V

CLAMP

0.6V

CLAMP

START

PGOOD

FB

0.9Vref

/0.85Vref

PWM

0.8V

40uA

0.6V

FB

Hiccup Logic

OC

Figure 2 - Simplified block diagram of the NX2116

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NX2117ACUTR Datasheet(PDF) 5 Page - Microsemi Corporation

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