LX1691IPW Microsemi Analog Mixed Signal Group, LX1691IPW Datasheet

IC CTLR CCFL BACKLIGHT 16-TSSOP

LX1691IPW

Manufacturer Part Number
LX1691IPW
Description
IC CTLR CCFL BACKLIGHT 16-TSSOP
Manufacturer
Microsemi Analog Mixed Signal Group
Type
CCFL Controllerr
Datasheet

Specifications of LX1691IPW

Voltage - Supply
2.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
16-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Current - Output
-
Frequency
-
Other names
LX1691IPWTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LX1691IPW
Quantity:
1 824
Part Number:
LX1691IPW-TR
Manufacturer:
MICROSEMI/美高森美
Quantity:
20 000
Copyright © 2003
Rev. 1.2, 8/30/2006
reduced, enhanced feature set, Direct
Drive CCFL (Cold Cathode Fluorescent
Lamp) Controller. Its architecture is
based on the very popular LX1689. By
limiting V
advanced processing, die size and
package pin count is decreased while
improving dimming precision.
be designed for virtually any CCFL
appliance from digital cameras and
PDA’s to big screen monitors and
driver viewable automotive displays.
accept digital and analog control inputs
and provides six different dimming
modes that control both lamp current
amplitude and duty cycle, either simul-
taneously or separately. Designers can
select normal or reverse polarity
dimming and precisely program mini-
mum and maximum lamp currents with
resistors.
feature is enhanced to include regu-
lation and shutdown for over voltage
and over current conditions.
IMPORTANT: For the most current data, consult MICROSEMI’s website:
Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; Patents Pending
LX1691 based inverter modules can
New versatile dimming circuitry can
Microsemi’s LX1691 is a cost
TM
The LX1691 fault shutdown
DDP
to 5.5V and using
Traditional Analog
Internal Digital
2
0
2
0
T1
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
T = 512 / Lamp Frequency
T
-40 to +85
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1691IPW-TR)
T
T2
A
D E S C R I P T I O N
BRITE_IN
BRITE_IN
(°C)
DD_CLK
DD_CLK
+3V
+3V
Direct Drive architecture works with
system voltages from 3 volts to more
than 50 volts, limited only by the
external power FET’s that drive the high
voltage transformer.
proven and patented strike method that
allows significant efficiency gains while
guaranteeing strong striking power at all
operating temperatures. Our method
sweeps strike frequency smoothly up to
the unloaded resonant frequency of the
lamp and high voltage transformer.
This, coupled with the LX1691’s active
high output voltage regulation, produces
just enough strike voltage without
generating unpredictable high voltage
spikes that cause arcing and component
failures.
simply switch to a higher frequency for
striking do not have this “real time”
control over output voltage, and require
much more attention to transformer
design.
Four of Six Dimming Modes
The LX1691 includes the Microsemi
P R O D U C T H I G H L I G H T
Microsemi’s proven and patented
T1
Lamp Current (mA)
Lamp Current (mA)
M
P A C K A G E O R D E R I N F O
IN
2.8V
Integrated Products
http://www.microsemi.com
V
®
Microsemi
T
Competitive
DDP
T2
+
+
_
_
External Digital
Direct PWM (Analog)
Enhanced Multi-Mode CCFL Controller
2
0
2
0
T1
M
AX
5.5V
devices
T
T = 512 / DD_CLK Frequency
V
DDP
T2
BRITE_IN
BRITE_IN
P
DD_CLK
DD_CLK
RODUCTION
that
PW
RoHS compliant / Pb-free
LX1691IPW
Plastic TSSOP
16-PIN
T1
Lamp Current (mA)
Lamp Current (mA)
Low Component Count / Module
High “Nits/Watt” Efficiency
Operates Directly From a Single
Industries Safest And Highest
Tight Operating Frequency
Simultaneous Amplitude And
Duty Cycle Dimming Modes
Resistor Programmable Min and
Max Lamp Currents
Digital Dimming Can Synch To
External Or Internal Clocks
100 ms Power On Delay
Open Or Shorted Lamp
Regulation & Shutdown
“On Chip” Full Wave Lamp
Current & Voltage Rectifiers
16 Pin TSSOP Package
Very Stable Oscillator with On-
Chip Timing Capacitor
Soft Start-Up Striking
Enhanced Digital Dimming
Resolution
Cost / And Size
Li-Ion Cell
Performing Strike Voltage
Generation (Patented)
Tolerance For Easier System
Level RFI Control
D
ATA
K E Y F E A T U R E S
T
S
B E N E F I T S
HEET
T2
+
_
+
_
LX1691
Page 1

Related parts for LX1691IPW

LX1691IPW Summary of contents

Page 1

... T = 512 / Lamp Frequency T (°C) A -40 to +85 Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1691IPW-TR) Copyright © 2003 Rev. 1.2, 8/30/2006 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Enhanced Multi-Mode CCFL Controller ® ...

Page 2

TM Thank you for your interest in Microsemi The full data sheet for this device contains proprietary information. To obtain a copy, please contact your local Microsemi sales representative. The name of your local representative can be obtained at the ...

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