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| 型號(hào)： | LX1691BIPW-TR |
| 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： | ROHS COMPLIANT, PLASTIC, TSSOP-16 |
| 文件頁(yè)數(shù)： | 1/1頁(yè) |
| 文件大小： | 93K |
| 代理商： | LX1691BIPW-TR |
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2005
Rev. 1.0a, 8/30/2006
WWW
.Microse
m
i
.CO
M
LX1691B
Enhanced Multi-Mode CCFL Controller
PRODUCTION DATA SHEET
TM
DESCRIPTION
The LX1691B is an enhanced Direct
Drive CCFL (Cold Cathode Fluorescent
Lamp) Controller. Its architecture is based on
the LX1691. The LX1691B is optimized for
wide input voltage applications. It is similar
to the LX1691 except it has a guaranteed
minimum lamp strike interval of one second
1
to
meet
notebook
and
monitor
panel
manufacturer’s specifications.
The “B”
version also adds feed forward input voltage
sensing to enhance transient response when
used in inverters that derive lamp power
from
unregulated
input
supplies
and
batteries.
The LX1691B can also be used with
fixed input supplies where it produces
performance equal to the LX1691.
LX1691B 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 lamp current amplitude and duty
cycle
simultaneously
or
separately.
Designers can select normal or reverse
polarity dimming and precisely program
minimum and maximum lamp currents with
resistors.
Fault protection includes open
lamp voltage regulation and shutdown for
over voltage and over current conditions.
The LX1691B employs Microsemi’s 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 LX1691B’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
Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; Patents Pending
KEY FEATUR ES
Wide Input Voltage Capable
Simultaneous Amplitude And
Duty Cycle Dimming Modes
Resistor Programmable min
and max Lamp Currents
Digital Dimming Can Synch To
External Or Internal Clocks
120 ms Power On Delay
Open Or Shorted Lamp
Regulation & Shutdown
“On Chip” Full Wave Lamp
Current Rectifier
16 Pin TSSOP Package
Very Stable Oscillator with On-
Chip Timing Capacitor
Enhanced Digital Dimming
Resolution
BENEFITS
Low Component Count /
Module Cost / And Size
High “Nits/Watt” Efficiency
Can Operate 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 = 256 / Lamp Frequency
+
_
T
Lamp Current (mA)
T
Four of Six Dimming Modes
PACKAGE ORDER INFO
PW
Plastic TSSOP
16-PIN
TA (°C)
MIN VDDP
MAX VDDP
RoHS compliant / Pb-free
-40 to +85
2.8V
5.5V
LX1691BIPW
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1691BIPW-TR)
1 If the lamp frequency is less than 115Khz.
LL
XX
11
66
99
11
BB
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LX1691CPW | 功能描述:IC CTRLR CCFL BACKLIGHT 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01 |
| LX1691IPW | 功能描述:IC CTLR CCFL BACKLIGHT 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01 |
| 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 |
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