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参数资料
| 型号： | LX1741CLM-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.145 A SWITCHING CONTROLLER, PDSO8 |
| 封装： | PLASTIC, MLP-8 |
| 文件页数： | 1/15页 |
| 文件大小： | 479K |
| 代理商： | LX1741CLM-TR |
Microsemi
Integrated Products 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
WWW
.Microse
m
i
.CO
M
LX1741
High Efficiency High Voltage Boost Controller
PRODUCTION DATA SHEET
I N T E GRA T ED
PR ODUC T S
DESCRI PTI O N
The LX1741 is a compact high
efficiency step-up boost controller.
Featuring a pseudo-hysteretic pulse
frequency modulation topology, the
LX1741 was designed for maximum
efficiency, reduced board size, and
minimal cost.
Utilizing an external N-Channel
MOSFET,
the
LX1741
offers
designers maximum flexibility with
respect to efficiency and cost. The
LX1741
provides
several
design
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 80A (typ) and
a shutdown current of less than 1A.
The input voltage ranges from 1.6V
to 6.0V, allowing for a wide selection
of system battery voltages. Start-up
operation is guaranteed at 1.6V input
The output voltage is programmed
easily using two external resistors in
conjunction with the feedback pin.
Depending on the MOSFET selected,
the LX1741 is capable of achieving
output voltages much higher than 40V.
The LX1741 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 is easily accom-
modated with a single external resistor.
The LX1741 is available in both the 8-
Pin MSOP, and the miniature 8-Pin MLP
requiring minimal PCB area.
IMPORTANT:
For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATUR ES
> 85% Maximum Efficiency
80A Typical Quiescent Supply
Current
Externally Programmable Peak
Inductor Current Limit For
Maximum Efficiency
Logic Controlled Shutdown
< 0.5 A Shutdown Current (typ)
Dynamic Output Voltage
Adjustment Via Analog Reference
Or Direct PWM Input
8-Pin MSOP Package or 8-Pin
MLP
APPLICATIONS/BENEFITS
Pagers
Wireless Phones
PDAs
Handheld Computers
General LCD Bias Applications
LED Driver
PRODUCT H I GHLIGHT
C
1
4.7F
R
CS
1k
L
1
47H
1206 Case Size
V
BAT = 1.6V to 6.0V
ON OFF
V
LCD = 18V ± 15%
LX1741
GND
SHDN
IN
ADJ
FB
CS
NDRV
SRC
PACKAGE ORDER INFO
LM
Plastic MLP
8-Pin
DU
Plastic MSOP
8-Pin
TA (
°C)
RoHS Compliant / Pb-free
Transition DC: 0452
RoHS Compliant / Pb-free
Transition DC: 0432
0 to 70
LX1741CLM
LX1741CDU
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e.
LX1741CDU-TR)
LL
XX
11
77
44
11
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| LX1882-00CDUT | SWITCHED CAPACITOR REGULATOR, 620 kHz SWITCHING FREQ-MAX, PDSO8 |
| LX1882-33CDMT | SWITCHED CAPACITOR REGULATOR, 620 kHz SWITCHING FREQ-MAX, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LX1742 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:High Efficiency High Voltage Boost Controller |
| 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 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色产品:BD91x Series Step-Down Regulators 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:两者兼有 输出数:2 输出电压:3.3V，0.8 V ~ 2.5 V 输入电压:4.5 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:1MHz 电流 - 输出:1.5A 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 包装:带卷 (TR) 供应商设备封装:VQFN020V4040 产品目录页面:1373 (CN2011-ZH PDF) 其它名称:BD9152MUV-E2TR |
| LX1742EVALKIT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DC:DC Converter |
| LX1744 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:Dual Output Boost ? LED Driver / LCD Bias |
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