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參數資料
| 型號： | LX1992CLM |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 顯示驅動器 |
| 英文描述： | High Efficiency LED Driver |
| 中文描述： | LED DISPLAY DRIVER, DSO8 |
| 封裝： | PLASTIC, MLP-8 |
| 文件頁數： | 1/11頁 |
| 文件大?。?/td> | 335K |
| 代理商： | LX1992CLM |
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 |
參數描述 |
|---|---|
| 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 |
| LX1993 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:High Efficiency LED Driver |
| LX1993-02EVALKIT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LED Driver |
| LX1993-03 EVAL KIT | 制造商:Microsemi Corporation 功能描述:LED BACKLIGHT CONTROLLERS AND DRIVERS - Bulk |
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