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Texas Instruments LMR140x0 SIMPLE SWITCHER® 降压调整器

德州仪器 LMR140x0 SIMPLE SWITCHER® 降压调节器是 40V 2A (LMR14020)、 3.5A (LMR14030) 或 5.0A (LMR14050)降压调节器，集成了一个高端 MOSFET。它们具有从 4V 到 40V 的宽幅输入电压范围，可广泛应用于工业到汽车领域中对不稳压电源进行电力调节。该调节器的静态电流在睡眠模式下为 40µA，非常适合电池供电系统。关断模式下极低的达 1µA 的电流，进一步延长了电池使用时间。宽可调开关频率范围可优化效率或者外部组件尺寸。内部环路补偿将用户从环路补偿设计的繁琐工作中解放出来。还使器件需要的外部元件数量降到最低程度。

特性

  • 4V to 40V input range
  • Available with 2A (LMR14020), 3.5A (LMR14030) or 5.0A (LMR14050) continuous output current
  • Ultra-low 40µA operating Quiescent current
  • 90mΩ high-side MOSFET
  • Minimum switch-on time: 75ns
  • Current mode control
  • Adjustable switching frequency from 200kHz to 2.5MHz
  • Frequency synchronization to external clock
  • Internal compensation for ease of use
  • High duty cycle operation supported
  • Precision enable input
  • 1µA shutdown current
  • External soft-start
  • Thermal, overvoltage, and short protection
  • 8-Pin HSOIC with PowerPAD™ package

应用

  • Automotive battery regulation
  • Industrial power supplies
  • Telecom and datacom systems
  • Battery powered system

Associated Eval Modules

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设计用于评估USB充电控制器和电源开关TPS254900-Q1。

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Texas Instruments LMR140x0SEVM/LMR140x0QDPREVM评估模块

用于评估LMR140x系列降压转换器的组装完备且经过测试的电路。

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Associated Products

Texas Instruments SIMPLE SWITCHER® Devices

Features robust power converter modules, regulators, and controllers, including tiny Nano solutions.

Learn More关于Texas Instruments SIMPLE SWITCHER® Devices View Products与Texas Instruments SIMPLE SWITCHER® Devices相关

视频

Functional Block Diagram

框图 - Texas Instruments LMR140x0 SIMPLE SWITCHER® 降压调整器

Additional Resources

发布日期: 2015-03-23 | 更新日期: 2022-03-11