參數(shù)資料
型號(hào): LM2731
廠商: National Semiconductor Corporation
英文描述: 0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23
中文描述: 0.6/1.6兆赫加強(qiáng)與22V的內(nèi)部場(chǎng)效應(yīng)管開關(guān)轉(zhuǎn)換器采用SOT - 23
文件頁(yè)數(shù): 1/16頁(yè)
文件大小: 528K
代理商: LM2731
LM2731
0.6/1.6 MHz Boost Converters With 22V Internal FET
Switch in SOT-23
General Description
The LM2731 switching regulators are current-mode boost
converters operating at fixed frequencies of 1.6 MHz (“X”
option) and 600 kHz (“Y” option).
The use of SOT-23 package, made possible by the minimal
power loss of the internal 1.8A switch, and use of small
inductors and capacitors result in the industry’s highest
power density. The 22V internal switch makes these solu-
tions perfect for boosting to voltages up to 20V.
These parts have a logic-level shutdown pin that can be
used to reduce quiescent current and extend battery life.
Protection is provided through cycle-by-cycle current limiting
and thermal shutdown. Internal compensation simplifies de-
sign and reduces component count.
Switch Frequency
X
Y
1.6 MHz
0.6 MHz
Features
n
22V DMOS FET switch
n
1.6 MHz (“X”), 0.6 MHz (“Y”) switching frequency
n
Low R
DS
(ON) DMOS FET
n
Switch current up to 1.8A
n
Wide input voltage range (2.7V–14V)
n
Low shutdown current (
<
1 μA)
n
5-Lead SOT-23 package
n
Uses tiny capacitors and inductors
n
Cycle-by-cycle current limiting
n
Internally compensated
Applications
n
White LED Current Source
n
PDA’s and Palm-Top Computers
n
Digital Cameras
n
Portable Phones and Games
n
Local Boost Regulator
Typical Application Circuit
20059110
20059130
July 2003
L
2003 National Semiconductor Corporation
DS200591
www.national.com
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相關(guān)代理商/技術(shù)參數(shù)
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LM2731_07 制造商:NSC 制造商全稱:National Semiconductor 功能描述:0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23
LM27313 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23
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LM27313XMF 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM27313XMF/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.6 MHZ BOOST CONVERTER RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT