參數(shù)資料
型號(hào)： LX1993
廠(chǎng)商： Microsemi Corporation
英文描述： High Efficiency LED Driver
中文描述： 高效率LED驅(qū)動(dòng)器
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 464K
代理商： LX1993
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2000
Rev. 1.0b, 2005-03-03
W
M
.
C
LX1993
High Efficiency LED Driver
P
RODUCTION
I N T E G R A T E D P R O D U C T S
D E S C R I P T I O N
The LX1993 is a high efficiency
step-up boost converter that features a
psuedo-hysteretic pulse frequency
modulation topology for driving
white or color LEDs in backlight or
frontlight systems. Designed for
maximum efficiency, reduced board
size, and minimal cost, the LX1993 is
ideal for PDA and digital camera
applications. The LX1993 features an
internal N-Channel MOSFET and
control circuitry that is optimized for
portable system design applications.
The LX1993 promotes improved
performance
in
systems by operating with a quiescent
supply current 70μA (typical) and a
shutdown current of less than 1μA.
The input voltage range is from 1.6V
to 6.0V thus allowing for a broad
selection
of
battery
applications
and
IMPORTANT:
For the most current data, consult
MICROSEMI
’s website:
http://www.microsemi.com
battery-operated
voltage
start-up
is
guaranteed at 1.6V input.
The LX1993 is capable of switching
currents in excess of 300mA and the
output current is readily programmed
using one external current sense
resistor in series with the LEDs. This
configuration provides a feedback
signal to the FB pin thus maintaining
constant output current regardless of
varying LED forward voltage (V
F
).
The LX1993 provides an additional
feature for simple dynamic adjustment
of the output current (i.e., up to 100%
of the maximum programmed current).
Designers can make this adjustment by
generating an analog reference signal
or a PWM signal applied directly to
the ADJ pin and any PWM amplitude
is readily accommodated via a single
external resistor. The LX1993 is
available in the 8-Pin MSOP and thus
requires a very small PCB area.
K E Y F E A T U R E S
> 80% Maximum Efficiency
70μA 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
APPLICAT IONS
Pagers
Wireless Phones
PDAs
Handheld Computers
LED Driver
Digital Camera Displays
P R O D U C T H I G H L I G H T
LX1993
GND
FB
CS
SW
SHDN
IN
ADJ
OUT
ON OFF
Li-Ion
PACK AGE ORDER INFO
DU
T
A
(
°
C)
Plastic MSOP
8-Pin
RoHS Compliant / Pb-free
Transition DC: 0432
LX1993CDU
0 to 70
Note: Available in Tape & Reel. Append the letters “TR” to the part
number. (i.e. LX1993CDU-TR)
L
X
1
9
9
3
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參數(shù)描述
LX1993-02EVALKIT 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)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
LX1993-03W EVAL KIT 制造商:Microsemi Corporation 功能描述:LED BACKLIGHT CONTROLLERS AND DRIVERS - Bulk
LX1993CDU 功能描述:IC LED DRVR WT/CLR BCKLGT 8-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:60 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?線(xiàn)性（LDO），PWM，升壓（升壓） 輸出數(shù):8 內(nèi)部驅(qū)動(dòng)器:是 類(lèi)型 - 主要:背光 類(lèi)型 - 次要:RGB，白色 LED 頻率:500kHz ~ 1.5MHz 電源電壓:4.75 V ~ 26 V 輸出電壓:45V 安裝類(lèi)型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* 工作溫度:-40°C ~ 85°C
LX1993CDU-T 功能描述:IC LED DRVR WT/CLR BCKLGT 8-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動(dòng)器:是 類(lèi)型 - 主要:背光 類(lèi)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(lèi)型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)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(yè)面:1371 (CN2011-ZH PDF) 其它名稱(chēng):BD1603NUV-E2CT
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