參數(shù)資料
型號： LX1992CDU
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 顯示驅(qū)動器
英文描述： High Efficiency LED Driver
中文描述： LED DISPLAY DRIVER, PDSO8
封裝： LEAD FREE, PLASTIC, MSOP-8
文件頁數(shù)： 1/11頁
文件大?。?/td> 335K
代理商： LX1992CDU
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2000
Rev. 1.1b, 2005-03-03
W
M
.
C
LX1992
High Efficiency LED Driver
P
RODUCTION
D
ATA
S
HEET
TM
D E S C R I P T I O N
The LX1992 is a compact high
efficiency step-up boost controller for
driving white or color LEDs in
backlight or frontlight systems and
offers designers maximum flexibility
with respect to efficiency and cost.
The LX1992 features a pseudo-
hysteretic pulse frequency modulation
topology and uses an external N-
Channel MOSFET. Further, the
LX1992 features control circuitry that
is optimized for portable systems (e.g.,
quiescent supply current of 80μA
(typ) and a shutdown current of less
than
1μA).
enhancements provide for improved
performance
in
systems applications.
The device input voltage range is
from 1.6V to 6.0, allowing for a wide
selection of system battery voltages
and
start-up
guaranteed at 1.6V input.
These
design
battery
operated
operation
is
Programming the output current is
readily achieved by using one external
current sense resistor in series with the
LEDs. In this configuration, LED
current provides a feedback signal to the
FB pin, maintaining constant current
regardless of varying LED forward
voltage (V
F
). Moreover, the LX1992 is
capable of achieving output currents in
excess of 150mA, depending on the
MOSFET selected.
The LX1992 has an additional feature
for simple dynamic adjustment of the
output current (i.e., up to 100% of the
maximum
programmed
Designers can make this adjustment via
an analog reference signal or a direct
PWM generated signal applied to the
ADJ pin and any PWM amplitude is
easily accommodated with a single
external resistor.
The LX1992 is available in both the 8-
Pin MSOP, and the miniature 8-Pin MLP
requiring minimal PCB area.
current).
IMPORTANT:
For the most current data, consult
MICROSEMI
’s website:
http://www.microsemi.com
K E Y F E A T U R E S
> 90% Efficiency
80μA Typical Quiescent Supply
Current
Externally Programmable Peak
Inductor Current Limit For
Maximum Efficiency
Logic Controlled Shutdown
< 1μA Shutdown Current
Dynamic Output Current
Adjustment Via Analog
Reference Or Direct PWM Input
8-Pin MSOP Package or 8-Pin
MLP
APPLICAT IONS /BENEFIT S
Pagers
Wireless Phones
PDAs
Handheld Computers
General LCD Bias Applications
LED Driver
Digital Camera Displays
P R O D U C T H I G H L I G H T
C
1
4.7
μ
F
L
1
47
μ
H
1206 Case Size
LX1992
GND
FB
CS
DRV
SHDN
IN
ADJ
SRC
R
SET
15
V
BAT
= 1.6V to 6.0V
ON OFF
V
F
= 3.6V typ.
I
LED
= 20mA to 0mA
R
CS
4
k
PACK AGE ORDER INFO
LM
8-Pin
RoHS Compliant / Pb-free
Transition DC: 0452
LX1992CLM
Plastic MLP
DU
RoHS Compliant / Pb-free
Transition DC: 0432
LX1992CDU
Plastic MSOP
8-Pin
T
A
(
°
C)
0 to 70
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e.
LX1992CDU-TR)
L
X
1
9
9
2
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相關代理商/技術參數(shù)
參數(shù)描述
LX1992-CDU 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LED Driver
LX1992CDU-TR 制造商:Microsemi Corporation 功能描述:LED DRVR 4SEGMENT 1.6V TO 6V 8MSOP IN TUBES - Bulk
LX1992CLM 功能描述:IC LED DRIVR WT/CLR BCKLGT 8-MLP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標準包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應商設備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT
LX1992-CLM 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LED Driver
LX1992EVALKIT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LED Driver
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