參數(shù)資料
型號： LX1742
廠商： Microsemi Corporation
英文描述： High Efficiency High Voltage Boost Controller
中文描述： 高效率高電壓升壓控制器
文件頁數(shù)： 1/13頁
文件大?。?/td> 456K
代理商： LX1742
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
LX1742
High Efficiency High Voltage Boost Controller
P
RODUCTION
D
ATA
S
HEET
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 LX1742 is a compact high
efficiency step-up boost controller.
Featuring a pseudo-hysteretic pulse
frequency modulation topology, the
LX1742 was designed for maximum
efficiency, reduced board size, and
minimal cost.
Utilizing an internal N-Channel
MOSFET,
the
designers maximum flexibility with
respect to efficiency and cost. The
LX1742
provides
enhancements that improve overall
performance under very light load
currents by implementing control
circuitry that is optimized for portable
systems - thus providing a quiescent
supply current of only 80μA (typ) and
a shutdown current of less than 1μA.
LX1742
offers
several
design
The input voltage ranges from 1.6V to
6.0V, allowing for a wide selection of
system
battery
voltages.
operation is guaranteed at 1.6V input
The LX1742 is capable of achieving
output voltages as high as 25V and the
output voltage is easily programmed
using
two
external
conjunction with the feedback pin.
The LX1742 has an additional feature
for simple dynamic adjustment of the
output voltage (i.e., up to
±
15% of the
nominal output voltage). Voltage
adjustment is achieved via an analog
reference signal or a direct PWM input
signal applied to the ADJ pin. Any
PWM
amplitude
accommodated with a single external
resistor.
Start-up
resistors
in
is
easily
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
80% Typical Efficiency
80μA Typical Quiescent Supply
Current
Externally Programmable Peak
Inductor Current Limit For
Maximum Efficiency
Logic Controlled Shutdown
< 1.0 μA Shutdown Current (typ)
Dynamic Output Voltage
Adjustment Via Analog
Reference Or Direct PWM Input
8-Pin MSOP Package
APPLICAT IONS /BENEFIT S
Pagers
Wireless Phones
PDAs
Handheld Computers
General LCD Bias Applications
LED Driver
P R O D U C T H I G H L I G H T
V
BAT
= (1.6V to 6.0V)
C
1
4.7
μ
F
R
1
1M
R
2
72k
R
CS
1k
L
1
47
μ
H
100kHz
V
PWM
= 3.0V
V
OUT
= 18V ± 15%
(For Contrast Adjustment)
LX1742
C
2
*
1nF
R
PWM
625k
UPS530
SW
OUT
SHDN
IN
GND
FB
CS
ADJ
PACK AGE ORDER INFO
DU
T
A
(
°
C)
RoHS Compliant / Pb-free
Transition DC: 0432
0 to 70
Note: Available in Tape & Reel. Append the letters “TR” to the
part number. (i.e. LX1742CDU-TR)
Plastic MSOP
8-Pin
LX1742CDU
L
X
1
7
4
2
相關PDF資料
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相關代理商/技術參數(shù)
參數(shù)描述
LX1742 EVAL KIT 制造商:Microsemi Corporation 功能描述:EVAL KIT FOR LX1742 - Bulk
LX1742CDU 功能描述:IC REG BOOST ADJ 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 產(chǎn)品培訓模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關:1MHz 電流 - 輸出:1.5A 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:VQFN020V4040 產(chǎn)品目錄頁面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR
LX1742EVALKIT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC:DC Converter
LX1744 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Dual Output Boost ? LED Driver / LCD Bias
LX1744 EVAL KIT 制造商:Microsemi Corporation 功能描述:LED BACKLIGHT CONTROLLERS AND DRIVERS - Bulk
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