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
TI Reference Designs Library
发布日期: 2013-10-02
| 更新日期: 2022-03-11
