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TPS62223-采用小型 SOT-23 封装静态电流为 15uA 的 2.3V 400mA 输出的 95% 效率步降转换器
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TI产品 - TPS62223介绍

TPS62223 - 采用小型 SOT-23 封装静态电流为 15uA 的 2.3V 400mA 输出的 95% 效率步降转换器

TPS62223是TI德州仪器公司的一款转换器（集成开关）产品，TPS62223是采用小型 SOT-23 封装静态电流为 15uA 的 2.3V 400mA 输出的 95% 效率步降转换器，本站介绍了TPS62223的封装应用图解、特点和优点、功能等，并给出了与TPS62223相关的TI元器件型号供参考。

TPS62223 - 采用小型 SOT-23 封装静态电流为 15uA 的 2.3V 400mA 输出的 95% 效率步降转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS6222x devices are a family of high-efficiency, synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an output voltage range of 6 V down to 0.7 V and up to 400-mA output current, the devices are ideal for powering the low voltage TMS320 DSP family and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the devices operate with a fixed switching frequency of typically 1.25 MHz. At light load currents, the part enters the power-save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 µA; therefore, the device achieves the highest efficiency over the entire load current range. The TPS6222x needs only three small external components. Together with the tiny TSOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.

产品特性

  • High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency
  • 2.5-V to 6-V Input Voltage Range
  • Adjustable Output Voltage Range From 0.7 V to VI
  • Fixed Output Voltage Options Available
  • Up to 400-mA Output Current
  • 1.25-MHz Fixed Frequency PWM Operation
  • Highest Efficiency Over Wide Load Current Range Due to Power-Save Mode
  • 15 µA Typical Quiescent Current
  • Soft Start
  • 100% Duty Cycle Low-Dropout Operation
  • Dynamic Output-Voltage Positioning
  • Available in TSOT23 Package
  • APPLICATIONS
    • PDAs and Pocket PC
    • Cellular Phones, Smart Phones
    • OMAP™ and Low Power DSP Supply
    • Digital Cameras
    • Portable Media Players
    • Portable Equipment
    • WLAN PC Cards

OMAP, TMS320 are trademarks of Texas Instruments.

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