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

BLOCK DIAGRAM

VSX

EOX

FBX

CSX

VTRIP

CS Comp

-

IRESET

+

ISET

RSET

PWM

RQ

SQ

Error Comp

+

-

-

+ Amplifier/

Compensation

VREF

20k

Ramp

Oscillator

UVLO UVLO

S

F FAULT S

R

S

SS1

SS2

SS3

TEMP

Hiccup

ISET

+12V

VCX

HOX

LOX

VIN(5V)

R2

CIN

R1

L1

ESR

OUT 1

COUT

PGX

+5V

VCCL

16V 16V

+5V

VCC

5.5V

SS/ENABLE

CSS

Figure 1 – Typical Block Diagram of Phase 1 and 3

+V

LDGD

VREF

+12V

VC1

VOUT4

-

LDFB

+5V

LDDIS

Figure 2 – LDO Controller Block Diagram

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 6

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