lx1695 Microsemi Corporation, lx1695 Datasheet

lx1695

Manufacturer Part Number

lx1695

Description

Switched Royer Ccfl Inverter Monitor Ic

Manufacturer

Microsemi Corporation

Datasheet

1.LX1695.pdf (10 pages)

Current page: 1 of 10
Download datasheet (272Kb)

Rev. 1.0a, 2006-01-06

supervisory functions for switched

Royer CCFL inverter modules used in

single or multiple lamp desktop

monitors and LCD TV sets.

integrates a PWM that generates

digital (burst mode) dimming from a

DC brightness control input, and a

protection circuit that shuts off the

Royer oscillator if lamp ignition does

not occur in a timely manner, or in the

event of one or more open lamps.

Strike and initial open lamp timeout is

user programmable with an external

RC,

programmable with a single external

resistor.

IMPORTANT: For the most current data, consult MICROSEMI’s website:

BRITE_IN

The LX1695 is a general purpose

External CLK Override

allows Syncronization

ENABLE

Logic High Enable

Duty Cycle Control

0 to 2V = 3% to 100%

30 to 600 Hertz x 512

OPTIONAL

and

PWM

generator

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

frequency

Single Resistor sets

Programmable Clock Frequency

Programmable lamp

strike interval at

power on or enable

D E S C R I P T I O N

DIM_FREQ

ENABLE

FLT_DLY

BRITE_IN

Wide Range Dimming For a Fixed Royer Inverter

-40 to 85

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e.

RoHS compliant.

LX1695

with

(°C)

LX1695IDM-TR)

ROYER

OLSNS

an external clock signal to program

and/or synchronize the Royer output

frequency.

under-voltage lockout and a logical

ENABLE input that permits shutting

down the Royer inverter(s) remotely

without removing their power. A single

output pin can be expanded with

external transistors to drive any number

of Royer circuits, giving a single device

the ability to control very large displays

for LCD TV applications or single lamp

panels in notebooks and web tablets.

The device is available in either an 8

pin plastic DIP or SOIC package.

GND

VDD

The DIM_FREQ pin can also accept

This low cost eight pin IC includes

P A C K A G E O R D E R I N F O

P R O D U C T H I G H L I G H T

Integrated Products Division

Royer Bias Drive 30 to 600 Hertz

Open Lamp Detection Input

Gated for Royer High

Microsemi

RoHS / Pb-free

LX1695IM

Fixed Input

Supply 4.5 to 5.5V

Plastic DIP

8-Pin

VDD

Switched Royer CCFL Inverter Monitor IC

RoHS / Pb-free

LX1695IDM

RODUCTION

Royer Inverter

8-Pin

Plastic SOIC

A P P L I C A T I O N S / B E N E F I T S

Single Resistor Programs

Output Frequency

Allows External Synchronized

PWM

Open Lamp Sense Protection

Programmable Fault Delay

Enable and UV Lockout

Preset 3.125% Minimum

Output Duty Cycle

DC to PWM Generator

Single or Multi Lamp Designs

Desktop Monitors

LCD TV

Industrial Displays

ATA

K E Y F E A T U R E S

HEET

LX1695

Page 1

Related parts for lx1695

lx1695 Summary of contents

Page 1

... The LX1695 is a general purpose DC to PWM generator with supervisory functions for switched Royer CCFL inverter modules used in single or multiple lamp desktop monitors and LCD TV sets. integrates a PWM that generates digital (burst mode) dimming from a ...

Page 2

... MBIENT JA , θ A 163°C/W MBIENT JA x θ Description Microsemi Integrated Products Division LX1695 RODUCTION ATA HEET DIM_FREQ 8 DD ENABLE ...

Page 3

... OLSNS Note 1 DY FLT_DLY TH Microsemi Integrated Products Division LX1695 RODUCTION ATA HEET LX1695 Units Min Typ Max 4.5 5 250 600 =25.2K ohms, Royer = 1000pF DIM_FREQ LX1695 Min Typ Max 4.0 3.5 2 0 -0.01 1 3.7 4 4.3 350 40 75 100 20 100 20 100 1 -600 237 ...

Page 4

... Ignore fault Logic 2V 0V 3.125% Min Duty Cycle PwrBad NoFault Ignore_OLSNS Enable PwrBad Enable Internal Clock Generator External Detector Figure 1 – Simplified Block Diagram Microsemi Integrated Products Division LX1695 RODUCTION ATA HEET 3V Bias 1V Generator 2.1V Fault Latch R NoFault Q S Clock PwrBad ...

Page 5

... Integrated Products Division LX1695 RODUCTION ATA HEET T1 ROYER VIN 470 Royer Input Voltage (Buck Output) +5V 5VDC for LX1695 5V ±5% 100mA ENABLE CIRCUIT On / Off Signal 5V Logic Level > 2. <0.8V : Off BRITE_IN Burst Duty Control Voltage 3.125% ~ 100% CN2 Page 5 ...

Page 6

... PCB, and low leakage ceramic capacitors are recommended. Typically this time-out is in the one to two second range, but can be as long as 5 seconds. Microsemi Integrated Products Division LX1695 RODUCTION ATA HEET ...

Page 7

... Microsemi Integrated Products Division LX1695 D S RODUCTION ATA HEET BRITE_IN (V) 85°C V dd=4.5V N40°C V dd=5.5V 25° ...

Page 8

... Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Switched Royer CCFL Inverter Monitor IC ® P RODUCTION Figure 3 – Timing Diagram Microsemi Integrated Products Division LX1695 D S ATA HEET 0V 5V (100% Duty (75% Duty (37.5% Duty ...

Page 9

... Lead Coplanarity M Note: 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Microsemi Integrated Products Division LX1695 RODUCTION ATA HEET M I ILLIMETERS NCHES MIN MAX ...

Page 10

... Copyright © 2004 Rev. 1.0a, 2006-01-06 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Switched Royer CCFL Inverter Monitor IC ® P RODUCTION Microsemi Integrated Products Division LX1695 D S ATA HEET Page 10 ...

Related keywords

lx1695 datasheet
lx1695 data sheet
lx1695 pdf datasheet
lx1695 component
lx1695 part
lx1695 distributor
lx1695 RoHS
lx1695 datasheet download