LX1671CPWTR View Datasheet(PDF) - Microsemi Corporation

Part Name

Description

MFG CO.

LX1671CPWTR

Multiple Output LoadSHARE™ PWM

Microsemi Corporation 

INTEGRATED PRODUCTS

LX1671

Multiple Output LoadSHARE™ PWM

PRODUCTION DATA SHEET

ELECTRICAL CHARACTERISTICS (CONTINUED)

Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 70°C except where

otherwise noted and the following test conditions: VCC = 5V, VCCL = 5V, VCX = 12V , HOX = LOX = 3000pF Load.

Parameter

Symbol

Test Conditions

` UVLO AND SOFT-START (SS)

Start-Up Threshold (VCX VCCL )

Start-Up Threshold (VCC)

Hysteresis

(VCC)

SS Input Resistance

RSS

SS Shutdown Threshold

VSHDN

Hiccup Mode Duty Cycle

` LINEAR REGULATOR CONTROLLER

Voltage Reference Tolerance

Source Current

ILDGD

Sink Current

` DISABLE INPUT

ILDGD

LDO Disable

LDDIS

Note 1 – X = Phase 1, 2, 3

Note 2 – System Specification

CSS = 0.1µF

VLDFB = 0.8V, COUT = 330µF

Vout = 10V

Vout = 0.4V

Threshold

Pulldown Resistance

LX1671

Units

Min Typ Max

3.5

4.0

4.5

V

4.0

4.25

4.5

V

0.1

V

20

KΩ

0.3

V

10

%

2

%

30

ma

0.2

mA

2

V

100

ΚΩ

Copyright © 2000

Rev. 1.0a, 2004-06-14

Microsemi

Integrated Products, Power Management

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 5

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