LXMG1960-28-0X Datasheet, PDF (1/8 Pages) Microsemi Corporation – 6-String 5W LED Backlight Boost Driver Module

LXMG1960-28-0x
®
6-String 5W LED Backlight Boost Driver Module
TM
PRODUCTION DATASHEET
•
DESCRIPTION
KEY FEATURES
LXMG1960-28-0x module is a boost Precision current mirror circuitry
white LED driver for medium size LCD typically provides for 1% percent string to
LED backlight panels. It is designed to string matching at the rated output current.
drive up to six strings of LEDs to a The magnitude of the string current is
maximum of 35V at up to 25mA per string. easily programmed, in 1mA steps through
The module consists of a boost an on board DIP switch.
converter and six programmable 10-25 mA The LXMG1960-28-0x includes over
precision current sinks. It is designed to voltage protection (OVP), and short and
work over a wide input voltage range open LED protection. If one string opens,
(4.75V to 28V) providing maximum its current sink will be disabled and the
flexibility. However the converter is a other strings will continue to operate
boost only design requiring the input normally. Likewise if one or several LEDs
supply voltage to not exceed the output in a string short it will continue to function
LED string voltage.
with no adverse affect on the other strings.
The module provides a dimming input: With the use of an external thermistor the
BRITE_A which adjusts the LED display module can provide LED current fold back
brightness by controlling the amplitude of in an over temperature situation.
the LED string current.
The module comes in a small form
The BRITE_A input is very flexible factor PCB and uses an 8 pin input and one
and can be controlled by a PWM signal, of two output connectors.
the application of a DC control voltage or
use of a potentiometer tied as a rheostat.
• Drives Up To 6 String LED Panels
• Strings Can Be Combined For
Higher Current
• Wide Input Voltage 4.75V-28V
• String Voltage Up To 35V
• LED String Current Programmable
in 1mA Steps from 10 to 25mA
For Matching Various Panel
Requirements
• 1% Typical String-to-String
Current Matching
• Analog Dimming Provides For a
10:1 Ratio
• Supports Multiple Methods Of
Dimming Such As DC Voltage,
PWM Signal and Potentiometer
• Over Voltage Protection
• LED Over Temperature Protection
Input
APPLICATIONS
• Medium Size White LED Backlight
LCD Displays
• Portable Instrumentation Displays
• Medical Instrument Displays
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Patents Pending
Wide Input
Voltage Range
4.75V to 28V
PRODUCT HIGHLIGHT
LXMG1960-28-01
CN1
X
DIMMING INPUT:
SW1
Analog – Current Amplitude
SW2
Dimming
SW3
SW4
Drives Six String LED
Panels. LED String
Voltage up to 35V
Precision
String-to-String
CN2
Current Matching
DC Voltage
Source
Potentiometer
PWM Signal
Supports Multi-Method
Analog Dimming
Externally
Programmable LED
String Current From
10mA to 25mA in
1mA Steps
Part Number
LXMG1960-28-01
LXMG1960-28-03
ORDER INFORMATION
Input Connector
Output Connector
Molex 53261-0871 or
equivalent
Molex 53261-0771 or equivalent
Hirose DF14A-15P-1.25H or equivalent
Copyright © 2009
Rev. 1.1, 2009-11-25
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: [phone]
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