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LT1944典型应用图例一
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LT1944封装图解
LT1944封装图解一
LT1944是Dual Micropower Step-Up DC/DC Converter

LT1944 - Dual Micropower Step-Up DC/DC Converter

LT1944 - Dual Micropower Step-Up DC/DC Converter - Linear Technology(凌力尔特)

功能描述
The LT1944 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. Ech converter is designed with a 350mA current limit and an input voltage range of 1.2V to 15V, making the LT1944 ideal for a wide variety of applications. Both converters feature a quiescent current of only 20μA at no load, which further reduces to 0.5μA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 36V switch allows high voltage outputs up to 34V to be easily generated in a simple boost topology without the use of costlt transformers. The LT1944's low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.
特点
  • Low Quiescent Current:20μA in Active Mode<1μA in Shutdown Mode
  • Operates with VIN as Low as 1.2V
  • Low VCESAT Switch: 250mV at 300mA
  • Tiny 10-Pin MSOP Package
  • Uses Small Surface Mount Components
  • High Output Voltage: Up to 34V
  • 应用
  • LCD Bias
  • Handheld Computers
  • Battery Backup
  • Digital Cameras
  • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格(美元)
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LT1944EMS MS-10 E $2.37 $2.00
    LT1944EMS#PBF MS-10 E $2.37 $2.00
    LT1944EMS#TR MS-10 E $2.06
    LT1944EMS#TRPBF MS-10 E $2.06
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