LXMG1611-01 Microsemi Analog Mixed Signal Group, LXMG1611-01 Datasheet - Page 5

• Manufacturer Part Number: LXMG1611-01
• Description: MOD INVERTER CCFL DIGITAL DIM
• Manufacturer: Microsemi Analog Mixed Signal Group
• Type: Inverters for CCFL and UV Lampsr

Specifications of LXMG1611-01

• Voltage - Input: 12V
• Output: 1800V
• Size / Dimension: 3.94" L x 0.63" W x 0.29" H (100mm x 16mm x 7.3mm)
• Mounting Type: Chassis Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Copyright © 1999
Rev. 1.0b, 2006-11-10
0 P.W. 100% of Period
* Use 4.99k for 5V PWM amplitude, 15k for 3.3V PWM
amplitude, and omit for 2.5V PWM amplitude.
from System
PWM Signal
P.W.
On-board brightness control circuit includes a DC voltage
to pulse width converter that minimizes system design work
and system noise susceptibility. This provides a familiar and
convenient interface while reducing the potential for
externally induced noise which can cause lamp flicker.
An on-board oscillator operates the inverter BURST rate
above 95Hz, well beyond standard 50/60Hz video refresh
rates where the eye can perceive pulsing light.
RangeMAX inverter modules are designed to operate with
the burst frequency synchronized to the video frame rate.
This provides operation with no visible display disturbances
caused by beat frequencies between the lamps and video
frame rates.
V
100µs
V
0V
TM
SYNC(+)
SYNC(-)
Figure 5 – Potentiometer Brightness Control
10K
Figure 5a – PWM Brightness Control
2.5V
5V
DC
V
4.99k
4.99k*
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
BRITE
SLEEP
SYNC(-)
LXMG1611-01
V
SYNC(+)
9-18V
H O W R A N G E M A X ™ W O R K S ( C O N T I N U E D )
V
IN
DC
GND
4.7µF
V
V
LO
HI
T Y P I C A L A P P L I C A I T O N
LXMG1611-01
BRITE
Integrated Products Division
CCFL
LAMP
®
Microsemi
RangeMAX™
Digital Dimming CCFL Inverter Module
In applications with no access to a vertical sync, the
inverter burst frequency can be allowed to "free run" at
95Hz. In this non-synchronous mode, minor display
disturbances can be found under certain video conditions.
This performance may be acceptable for many
applications, but synchronization must be used when no
disturbance can be tolerated.
Separate inputs are provided for negative and positive
vertical sync pulses so external inversion is not needed.
Separate feedback loops for lamp current and open circuit
voltage regulation insure reliable strike under all
operating conditions, automatic over-voltage prevention
with broken or failed lamps, and accurate lamp current
regulation.
The brightness control may be a simple 10k potentiometer
or a voltage output DAC. A PWM signal from a micro-
controller may also be used with a suitable filter such as
shown in Figure 5A.
If synchronization to the video framerate is desired,
connect the vertical sync pulse from the system video
controller to the appropriate V
negative going (
positive going (
video synchronization is desired, leave both V
V
If you need to turn the inverter ON/OFF remotely,
connect a 3V or 5V logic signal to the
remote ON/OFF is not needed, connect the
to V
Connect V
V
Never connect V
lamp current regulation. If both lamp wires have heavy
high voltage insulation, connect the longest wire to V
SYNC(+)
LO
to the low voltage wire (wire with thinner insulation).
IN
P
or any other voltage greater than 2.2V
floating.
RODUCTION
Not Recommended For New Design
HI
to high voltage wire from the lamp. Connect
LO
to circuit ground as this will defeat
D
), connect it to V
ATA
), connect it to V
Also available in Dual
Output LXMG1621-01 and
Quad Output LXMG1643-
12-6x versions for multiple
lamp applications.
RangeMAX™ Inverters
SYNC
S
HEET
input. If the pulse is
LXMG1611-01
SLEEP
SYNC(+)
SYNC(-)
SLEEP
DC
SYNC(-)
.
input. If
. If no
. If
and
input
LO
.
Page 5