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LM2734YMKNSN/a15990avaiThin SOT23 1A Load Step-Down DC-DC Regulator
LM2734YMKXNSN/a89331avaiThin SOT23 1A Load Step-Down DC-DC Regulator
LM2734XMKNSN/a966avaiThin SOT23 1A Load Step-Down DC-DC Regulator
LM2734XMKXNSN/a2000avaiThin SOT23 1A Load Step-Down DC-DC Regulator
LM2734XMKXNS国半N/a28000avaiThin SOT23 1A Load Step-Down DC-DC Regulator


LM2734YMKX ,Thin SOT23 1A Load Step-Down DC-DC RegulatorFeaturesn Thin SOT23-6 packageThe LM2734 regulator is a monolithic, high frequency, PWMstep-downDC/ ..
LM2734ZMK ,Thin SOT23 1A Load Step-Down DC-DC RegulatorElectrical CharacteristicsSpecifications with standard typeface are for T = 25˚C, and those in bold ..
LM2734ZMKX ,Thin SOT23 1A Load Step-Down DC-DC RegulatorPin DescriptionPin Name Function1 BOOST Boost voltage that drives the internal NMOS control switch. ..
LM2734ZSD/NOPB ,Thin SOT23 1A Load Step-Down DC-DC Regulator 6-WSON -40 to 125Features 3 DescriptionThe LM2734Z regulator is a monolithic, high-1• Qualified for Automotive Appli ..
LM2735XMF/NOPB ,520kHz/1.6MHzFeatures 3 DescriptionThe LM2735 device is an easy-to-use, space-efficient1• Input Voltage Range: 2 ..
LM2735XMFX/NOPB ,520kHz/1.6MHzFeatures... 1 8 Application and Implementation...... 148.1 Application Information........ 142 Appl ..
LM6142-BIM ,Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational AmplifierFeaturesAt Vs = 5V. Typ unless noted. - Rail-to-rail input CMVR -0.25V to 5.25V - Rail-to-rail ou ..
LM6142BIM/NOPB ,Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier 8-SOIC -40 to 85Electrical Characteristics (continued)+− + +Unless otherwise specified, all limits guaranteed for T ..
LM6142BIMX ,Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational AmplifierElectrical Characteristics (Note 8) (Continued)+ − + +>Unless otherwise specified, all limits guara ..
LM6142BIMX/NOPB ,Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier 8-SOIC -40 to 85Electrical Characteristics.(2) If Military/Aerospace specified devices are required, please contact ..
LM6142BIMX/NOPB ,Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier 8-SOIC -40 to 85Electrical Characteristics+− + +Unless otherwise specified, all limits guaranteed for T = 25°C, V = ..
LM6142BIN ,Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational AmplifierGeneral DescriptionUsing patent pending new circuit topologies, the LM6142 provides new levels of p ..


LM2734XMK-LM2734XMKX-LM2734YMK-LM2734YMKX
Thin SOT23 1A Load Step-Down DC-DC Regulator
LM2734
Thin SOT23 1A Load Step-Down DC-DC Regulator
General Description

The LM2734 regulatorisa monolithic, high frequency, PWM
step-down DC/DC converterina 6-pin Thin SOT23 package. providesall the active functionsto provide local DC/DC
conversion with fast transient response and accurate regu-
lationin the smallest possible PCB area.
Witha minimumof external components and online design
support through WEBENCH®™,the LM2734is easyto use.
The abilityto drive1A loads withan internal 300mΩ NMOS
switch using state-of-the-art 0.5µm BiCMOS technologyre-
sultsin the best power density available. The world class
control circuitry allowsfor on-timesas lowas 13ns, thus
supporting exceptionally high frequency conversion overthe
entire3Vto 20V input operating range downtothe minimum
output voltageof 0.8V. Switching frequencyis internallyset 550kHz (LM2734Y)or 1.6MHz (LM2734X), allowing the
useof extremely small surface mount inductors and chip
capacitors. Even thoughthe operating frequencies are very
high, efficienciesupto 90% are easyto achieve. External
shutdownis included, featuringan ultra-low stand-by current 30nA. The LM2734 utilizes current-mode control andin-
ternal compensationto provide high-performance regulation
overa wide rangeof operating conditions. Additional fea-
tures include internal soft-start circuitryto reduce inrush
current, pulse-by-pulse current limit, thermal shutdown, and
output over-voltage protection.
Features
Thin SOT23-6 package 3.0Vto 20V input voltage range 0.8Vto 18V output voltage range1A output current 550kHz (LM2734Y) and 1.6MHz (LM2734X)
switching frequencies 300mΩ NMOS switch 30nA shutdown current 0.8V, 2% internal voltage reference Internal soft-start Current-Mode, PWM operation WEBENCH® online design tool Thermal shutdown
Applications
Local Pointof Load Regulation Core Powerin HDDs Set-Top Boxes Battery Powered Devices USB Powered Devices DSL Modems Notebook Computers
Typical Application Circuit
Efficiencyvs Load Current
VIN= 5V, VOUT= 3.3V

January 2005
LM2734
Thin
SOT23
Load
Step-Down
DC-DC
Regulator
ic,good price


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