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LTC3542IDC 数据表 (PDF) - Linear Integrated Systems

LTC3542IDC Datasheet PDF - Linear Integrated Systems
部件名 LTC3542IDC
下载  LTC3542IDC 下载

文件大小   199.33 Kbytes
  16 Pages
制造商  LINEAR [Linear Integrated Systems]
网页  http://www.linearsystems.com
标志 LINEAR - Linear Integrated Systems
功能描述 500mA, 2.25MHz Synchronous Step-Down

LTC3542IDC Datasheet (PDF)

Go To PDF Page 下载 数据表
LTC3542IDC Datasheet PDF - Linear Integrated Systems

部件名 LTC3542IDC
下载  LTC3542IDC Click to download

文件大小   199.33 Kbytes
  16 Pages
制造商  LINEAR [Linear Integrated Systems]
网页  http://www.linearsystems.com
标志 LINEAR - Linear Integrated Systems
功能描述 500mA, 2.25MHz Synchronous Step-Down

LTC3542IDC 数据表 (HTML) - Linear Integrated Systems

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LTC3542IDC 产品详情

DESCRIPTION
The LTC®3542 is a high efficiency monolithic synchronous buck converter using a constant frequency, current mode architecture. Supply current during operation is only 26μA, dropping to <1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3542 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. The output voltage is adjustable from 0.6V to VIN. Internal power switches are optimized to provide high efficiency and eliminate the need for an external Schottky diode.

FEATURES
■ High Efficiency: Up to 96%
■ High Peak Switch Current: 1000mA
■ Low Output Ripple (<20mVP-P Typical)
   Burst Mode Operation: Only 26μA
■ Very Low Quiescent Current: Only 26μA
■ 2.5V to 5.5V Input Voltage Range
■ 2.25MHz Constant Frequency Operation
■ 1MHz to 3MHz External Frequency Synchronization
■ Low Dropout Operation: 100% Duty Cycle
■ No Schottky Diode Required
■ Internal Soft-Start Limits Inrush Current
■ 0.6V Reference Allows Low Output Voltages
■ Shutdown Mode Draws <1μA Supply Current
■ ±2% Output Voltage Accuracy
■ Current Mode Operation for Excellent Line and Load
   Transient Response
■ Overtemperature Protected
■ Available in 6-Lead 2mm × 2mm DFN and Small TSOT

APPLICATIONS
■ Cellular Telephones
■ Wireless and DSL Modems
■ Digital Cameras
■ MP3 Players
■ PDAs and Other Handheld Devices




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