LX1686E Ver la hoja de datos (PDF) - Microsemi Corporation

Número de pieza

componentes Descripción

Fabricante

LX1686E

Digital Dimming CCFL Controller IC

Microsemi Corporation 

LX1686E

TM

®

Digital Dimming CCFL Controller IC

PRODUCTION DATA SHEET

BLOCK DIAGRAM

CPDN

CVCOMP

BRT ISNS VSNS

CICOMP

PD_CR

Dimming Control

RPD

CPD

FVERT

AFD_C

Phase

Detector

VCO

Auto Freq.

Detect

CAFD

VCO_C

CVCO

0.5 - 2.5V

-

+

Burst

Comparator

VCOMP

ICOMP

Voltage

Error

Amp

-

+

VAMP

1.25V

PWM

Controllers

Voltage

- Comparator

+

VCOMP

Output

Steering

Logic

QA

- IAMP

+

Current

Error Amp

ICOMP

-

+ Current

Comparator

Q

B

Output

Drivers

2.5V

0V

CLK

OUT

ENA

Bias Generator,

UVLO, and VREF

PWR_GD

2.50V

VDD_SW

BRITE

50k

BRT_POS

ENA

1.5V

50k

-

+

0-3V

VDD VDD

Triangle Ignite

Wave Gen.

300mV

255mV

Open Lamp

Comparator

VDD_P

AOUT

BOUT

VSS_P

VDD

ENABLE

I_R

Ri

VSS

DIG_DIM

RAMP_C

CRAMP

PWM Ramp

Generator

RAMP_R

RRAMP2

RRAMP1

VDD

TRI_C OLSNS

CTRI

Copyright © 2004

Rev. 1.1, 2006-02-27

Microsemi

Integrated Products

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

Page 6

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