Texas Instruments

Texas Instruments TPS54335/TPS54336 同步降压转换器是一款 3A 低静态电流同步 DC-DC 转换器 IC(集成电路),可支持最大 28V 输入电压。TI TPS54335/36 集成了MOSFET 并采用电流模式开关控制,非常适用于 PCB 上的紧凑设计以及需减少外部组件数量的应用。这两款降压转换器通过高度稳定的电压基准(在整个温度范围内精度为 1.5% )为各种负载提供精确的稳压。TPS54335 提供内部 2 ms 软启动和 50kHz-1.5MHz 可调频率。TPS54336 具有可调软启动和固定 340 kHz 频率。这些 TI 器件适用于各种应用,包括消费类应用(DTV、机顶盒和 LCD 显示器)、电池充电器以及工业与车载音频电源。

特性

  • Two 128mΩ/84mΩ MOSFETs for 3A Continuous Output Current
  • TPS54335: Internal 2ms Soft-start, 50kHz-1.5MHz Adjustable Frequency
  • TPS54336: Adjustable Soft-start, Fixed 340kHz Frequency
  • Low 2µA Shutdown Quiescent Current
  • 0.8V Internal Voltage Reference with ±0.8% Accuracy at Room Temperature and ±1.5% Accuracy Over Temperature
  • Fixed-Frequency Current Mode Control
  • Pulse Skipping Boosts Efficiency at Light Loads
  • Overcurrent Protection for Both MOSFETs with Hiccup Mode for Severe Fault Conditions
  • Thermal Shutdown and Overvoltage Transition Protection
  • Available in Easy-to-Use 8-Pin SOIC PowerPAD and 10-pin SON
  • Monotonic Start-Up into Pre-biased Outputs

应用

  • Consumer Applications such as DTV, Set Top Boxes, LCD displays, CPE Equipment
  • Battery Chargers
  • Industrial and Car Audio Power Supplies
  • 5V,12V, and 24V Distributed Power Systems

视频

Functional Block Diagram

框图 - Texas Instruments

TI Reference Designs Library

TI参考设计 - Texas Instruments
发布日期: 2013-10-02 | 更新日期: 2022-03-11