參數(shù)資料
型號(hào)： LX1691IPWTR
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 穩(wěn)壓器
英文描述： 0.1 A FLUORESCENT LIGHT CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16
封裝： LEAD FREE, PLASTIC, TSSOP-16
文件頁數(shù)： 1/15頁
文件大小： 270K
代理商： LX1691IPWTR
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2003
Rev. 1.0, 7/16/2004
WWW
.Microse
m
i
.CO
M
LX1691
Enhanced Multi-Mode CCFL Controller
PRODUCTION DATA SHEET
TM
DESCRIPTION
Microsemi’s
LX1691
is
a
cost
reduced, enhanced feature set, Direct
Drive CCFL (Cold Cathode Fluorescent
Lamp) Controller. Its architecture is
based on the very popular LX1689. By
limiting
VDDP to 5.5V and using
advanced
processing, die size
and
package pin count is decreased while
improving dimming precision.
LX1691 based inverter modules can
be designed for virtually any CCFL
appliance from digital cameras and
PDA’s to big screen monitors and
driver viewable automotive displays.
New versatile dimming circuitry can
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.
The LX1691 fault shutdown
feature is enhanced to include regu-
lation and shutdown for over voltage
and over current conditions.
Microsemi’s proven and patented
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.
The LX1691 includes the Microsemi
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.
Competitive
devices
that
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.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATUR ES
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
BENEFITS
Low Component Count / Module
Cost / And Size
High “Nits/Watt” Efficiency
Operates Directly From a Single
Li-Ion Cell
Industries Safest And Highest
Performing Strike Voltage
Generation (Patented)
Tight Operating Frequency
Tolerance For Easier System
Level RFI Control
PRODUCT H I GHLIGHT
2
0
VDC
T1
T2
BRITE_IN
DD_CLK
+3V
Traditional Analog
+
T1
T2
_
2
0
VDC
BRITE_IN
DD_CLK
External Digital
T = 512 / DD_CLK Frequency
+
_
2
0
VDC
T1
T2
BRITE_IN
DD_CLK
Direct PWM (Analog)
+
T1
T2
_
2
0
VDC
BRITE_IN
DD_CLK
+3V
Internal Digital
T = 512 / Lamp Frequency
+
_
T
Lamp Current (mA)
T
Four of Six Dimming Modes
PACKAGE ORDER INFO
TA (
°C)
MIN VDDP
MAX VDDP
PW
Plastic TSSOP
16-PIN
-40 to +85
2.8V
5.5V
LX1691IPW
Pb-free
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1691IPWTR)
LL
XX
11
66
99
11
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LX1691IPW-TR 制造商:Microsemi Corporation 功能描述:CCFL DRVR 5.5V 16TSSOP - Tape and Reel
LX1692 制造商:MITSUMI 制造商全稱:Mitsumi Electronics, Corp. 功能描述:Full Bridge Resonant CCFL Controller
LX1692A 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Full Bridge Resonant CCFL Controller
LX1692AIPW 制造商:Microsemi Corporation 功能描述:FULL BRIDGE RESONANT CCFL CONTROLLER 制造商:Microsemi Corporation 功能描述:CCFL DRVR 22V 20TSSOP - Bulk 制造商:Microsemi Corporation 功能描述:LX1692AIPW Series 7 to 22 V Supply Voltage Full Bridge CCFL Controller- TSSOP-20 制造商:MS4 功能描述:LX1692AIPW Series 7 to 22 V Supply Voltage Full Bridge CCFL Controller- TSSOP-20
LX1692B 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Full Bridge Resonant CCFL Controller
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