Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LX1688CPW-TR Datasheet(PDF) 1 Page - Microsemi Corporation

Part # LX1688CPW-TR
Description  Multiple Lamp CCFL Controller
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

LX1688CPW-TR Datasheet(HTML) 1 Page - Microsemi Corporation

  LX1688CPW-TR Datasheet HTML 1Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 2Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 3Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 4Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 5Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 6Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 7Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 8Page - Microsemi Corporation LX1688CPW-TR Datasheet HTML 9Page - Microsemi Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 16 page
background image
RangeMAX™
LX1688
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
© 2001
Rev. 1.2, 2006-03-09
Multiple Lamp CCFL Controller
TM
®
DESCRIPTION
The LX1688 is a fixed frequency, dual
current/voltage mode, switching regulator
that provides the control function for Cold
Cathode Fluorescent Lighting (CCFL).
This controller can be used to drive a
single lamp, but is specifically designed
for multiple lamp LCD panels. The IC can
be configured as a master or slave and
synchronize up to 12 controllers.
The LX1688 includes highly integrated
universal ‘PWM or DC’ dim input that
allows either a PWM or DC input to adjust
brightness without requiring external
conditioning, since a single external
capacitor CPWM can be used to integrate
a PWM input. Burst mode dimming is
possible if the user supplies a low
frequency PWM signal on the BRITE
input and no CPWM capacitor is used. The
controller utilizes Microsemi’s patented
direct drive fixed frequency topology and
patented resonant lamp strike generation
technique.
Safety and reliability features include a
dual feedback control loop that permits
regulation of maximum lamp strike voltage
as well as lamp current.
Regulating
maximum lamp voltage permits the designer
to provide for ample worst-case lamp strike
voltage
while
conservatively
limiting
maximum open circuit voltage. In addition
the
controller
features
include
auto
shutdown for an open or broken lamp, and a
lamp fault detection with a status reporting
output.
To improve design flexibility the IC
includes the ability to select the polarity of
both the chip enable and dim (BRITE)
inputs. Also included is a switched VDD
output of up to 10mA that will allow the
user to power other circuitry that can be
switched on and off with the inverters
enable input.
This preserves the micro
power sleep mode with no additional
components.
IMPORTANT:
For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected by U.S. Patents 5,615,093; 5,923,129; 5,930,121; 6,198,234; Patents Pending
KEY FEATUR ES
Provision to Synchronize Lamp
Current & Frequency With Other
Controllers
Dimming With Analog or Digital
(PWM) Methods (>20:1)
Programmable Fixed Frequency
Adjustable Power-up Reset
ENABLE/BRITE Polarity Selection
Voltage Limiting on Step-up
Transformer Secondary Winding
Open Lamp Timeout Circuitry
Switched VDD Output (10mA)
Micro-Amp Sleep Mode
Operates With 3.3V to 5V Supply
100mA Output Drive Capability
APPLICATIONS / BENEFITS
Desktop LCD Monitors
Multiple Lamp Panels
Low Ambient Light Displays
High Efficiency
Lower Cost than Conventional
Buck/Royer Inverter Topologies
Improved Lamp Strike Capability
Improved Over-Voltage Control
PRODUCT H I GHLIGHT
LX1688
MASTER
LX1688
SLAVE
FAULT 1
FAULT 2
INPUT
CONNECTOR
LAMPS
DIMMING (BRITE)
ENABLE
BRITE
ENABLE
FAULT 1
FAULT 2
VDD
STRIKE
STATUS
STRIKE
STATUS
Ch2
10.0mV
Ω
M100µs
Ch3
10.0mV
Ω
125 Hz 5% Duty cycle Burst
65KHz run frequency
Simplified Quad Lamp Inverter Showing Synchronized Output Waveforms
PACKAGE ORDER INFO
PW
Plastic TSSOP
24-Pin
TJ (°C)
MIN VDD
MAX VDD
RoHS compliant / Pb-free Transition DC: 0442
0 to 70
3.0V
5.5V
LX1688CPW
-40 to 85
3.0V
5.5V
LX1688IPW
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1688CPW-TR)


Similar Part No. - LX1688CPW-TR

ManufacturerPart #DatasheetDescription
logo
Microsemi Corporation
LX1688CPW MICROSEMI-LX1688CPW Datasheet
624Kb / 15P
   MULTIPLE LAMP CCFL CONTROLLER
More results

Similar Description - LX1688CPW-TR

ManufacturerPart #DatasheetDescription
logo
Microsemi Corporation
LX1688 MICROSEMI-LX1688 Datasheet
624Kb / 15P
   MULTIPLE LAMP CCFL CONTROLLER
LX6501 MICROSEMI-LX6501 Datasheet
81Kb / 2P
   TM High Performance Multi-Lamp CCFL Controller
logo
Analog Microelectronics
AME9001 AME-AME9001 Datasheet
370Kb / 27P
   CCFL BACKLIGHT CONTROLLER
logo
Intersil Corporation
ISL6884 INTERSIL-ISL6884 Datasheet
256Kb / 13P
   CCFL Brightness Controller
logo
Renesas Technology Corp
ISL6884 RENESAS-ISL6884 Datasheet
557Kb / 13P
   CCFL Brightness Controller
logo
Asahi Kasei Microsystem...
AME9002 AKM-AME9002 Datasheet
815Kb / 37P
   CCFL Backlight Controller
logo
Vishay Siliconix
CCFL VISHAY-CCFL Datasheet
124Kb / 5P
   Inverter for CCFL Lamp
Revision 01-Oct-02
logo
Asahi Kasei Microsystem...
AME9003 AKM-AME9003 Datasheet
260Kb / 39P
   CCFL Backlight Controller
logo
Microsemi Corporation
LX6503A MICROSEMI-LX6503A Datasheet
363Kb / 2P
   High Performance CCFL Controller
LX6512 MICROSEMI-LX6512 Datasheet
101Kb / 2P
   High Performance CCFL controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com