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參數(shù)資料
| 型號： | LX1741CLMT |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.145 A SWITCHING CONTROLLER, PDSO8 |
| 封裝： | PLASTIC, MLFP-8 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 459K |
| 代理商： | LX1741CLMT |
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2000
Rev. 1.1, 2002-11-21
WWW
.Microse
m
i
.CO
M
LX1741
High Efficiency High Voltage Boost Controller
PRODUCTION DATA SHEET
I N T E GR A T ED
PRO DUC T S
DESCRIPTION
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
4.7
F
R
CS
1k
L
1
47
H
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
TA (°C)
LM
Plastic MLP
8-Pin
DU
Plastic MSOP
8-Pin
0 to 70
LX1741CLM
LX1741CDU
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX1741CDUT)
LL
XX
11
77
44
11
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| LX1741CLM-TR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:High Efficiency High Voltage Boost Controller |
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| 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(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)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(guān):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(yīng)商設(shè)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 |
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