Texas Instruments TPS54334 同步 SWIFT™降压电压转换器
德州仪器 TPS54334 同步 SWIFT™ 降压电压转换器是一款集成 MOSFET 的 28V、3A、低静态电源电流（IQ）同步单片降压转换器。TPS54334 通过集成 MOSFET 实现小型设计，并实施电流模式控制来减少外部元件数。该器件凭借集成的 128mΩ/84mΩ MOSFET、低静态电源电流以及轻负载条件下的脉冲跳跃实现了效率的最大化。该器件可利用使能引脚进入关断模式，关断电源电流可降至 2µA。TPS54334 在温度范围内提供带有精确电压基准（1.5%）的针对多种负载的准确调节。
特性
- Two 128mΩ/84mΩ MOSFETs for 3A continuous output current
- Power good
- Low 2µA shutdown quiescent current
- 0.8V internal voltage reference with ±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 and overvoltage transient 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
- Digital TV (DTV)
- Set top box (STB, DVD/Blu-ray player)
- LCD display
- CPE (cable modem, WiFi router)
- DLP projectors
- Smart meters
- Battery chargers
- Industrial and car audio power supplies
- 5V, 12V, and 24V distributed power bus supply
Development Tool
Texas Instruments TPS54334EVM-722 3A稳压器评估模块
设计用于评估TPS54334的特性和功能。
发布日期: 2015-07-10
| 更新日期: 2022-03-11