參數(shù)資料
型號(hào)： LX1994CLD
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 顯示驅(qū)動(dòng)器
英文描述： High Efficiency LED Driver
中文描述： LED DISPLAY DRIVER, PDSO10
封裝： ROHS COMPLIANT, PLASTIC, MLP-10
文件頁(yè)數(shù)： 1/13頁(yè)
文件大?。?/td> 309K
代理商： LX1994CLD
LX1994
P
RODUCTION
D
ATA
S
HEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
W
M
.
C
High Efficiency LED Driver
Copyright
2003
Rev. 1.0a, 2004-08-10
TM
D E S C R I P T I O N
Microsemi’s LX1994 is a compact,
high
efficiency,
controller which is designed to drive a
string of white or colored LED’s in a
backlight or front light system. The
LX1994 design is based on a dual
mode PFM architecture and provides
maximum typical efficiency greater
than 92%.
The LX1994 has many unique
design features and advantages over
competitor solutions. The features
included: low quiescent current
(100μA typical), low shut down
current (<1μA), dedicate ambient light
sensor
interface
dimming modes, low voltage and low
offset current sense, and integrated
OVP protection.
The
converter
efficiency, low cost, and flexible
design by selection of an external N-
Channel MOSFET, current sense
resistors,
and
protection.
IMPORTANT:
For the most current data, consult
MICROSEMI
’s website:
http://www.microsemi.com
step-up
boost
(LX1970),
dual
achieves
high
integrated
OVP
The use of external N-channel
MOSFET allows design to optimize
system efficiency.
The OVP protection comparator
eliminates the need of an external Zener
diode clamp. The OVP function can be
scaled
for
any
Maximum output current is achievable
by selection of the current sense
resistor. These features make the
controller ideal for PDA or digital
camera applications
To enhance system battery life, the
LX1994 provides 2 dimming options
and a dedicated ambient light sensor
(LX1970) interface.
The LX1994 supports a wide range
of system battery voltage inputs which
ranges from 2.0 to 5.5V. The LX1994
is guaranteed to start up at 2.0V input.
The LX1994 is available in miniature
10-pin MLP or MSOP packages.
output
voltage.
K E Y F E A T U R E S
Efficiency > 92%
Dual PFM Architecture To
Extend Battery Life
V
IN
Range 2.0V To 5.5V. Start
Up Warranty @ 2.0V
Logic Control Shutdown
100μA Typical Quiescent
Current
Shutdown I
Q
Current <1μA
OVP For Open String Output
Voltage
Low Voltage And Offset
Current Sense
Light Sensor (LX1970)
interface
Dual Dimming Options (PWM
or DC Voltage)
No External Zener Clamp
Diode
10-Pin MLP or MSOP
A P P L I C A T I O N S
Pagers
PDA
Cell Phone
Portable Display
Digital Cameras
P R O D U C T H I G H L I G H T
DRV
SRC
OVP
S/P
VIN
BRT
V
IN
= 2.0V to 5.5V
GND
LX1994
FB
33μH
FDV303
UPS5819
LS
SNK
SRC
VSS
VDD
LX1970
3V
CMP
Auto Adjust for
Ambient Light
P A C K A G E O R D E R I N F O
LD
10-Pin
LX1994CLD
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e.
LX1994CDU-TR)
T
A
(
°
C)
Plastic MLP
DU
Plastic MSOP
10-Pin
LX1994CDU
-40 to 85
L
X
1
9
9
4
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LX1994CLD-TR 制造商:Microsemi Corporation 功能描述:LED DRVR 2SEGMENT 2V TO 5.5V 10MSOP - Tape and Reel
LX1994-DU EVAL KIT 制造商:Microsemi Corporation 功能描述:LED BACKLIGHT CONTROLLERS AND DRIVERS - Bulk
LX1994-LD EVAL KIT 制造商:Microsemi Corporation 功能描述:LED BACKLIGHT CONTROLLERS AND DRIVERS - Bulk
LX1995 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Miniature LED Driver
LX1995_05 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Miniature LED Driver
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