TPS54331是TI公司的一款转换器(集成开关)产品,TPS54331是具有 Eco-mode 的 3.5V 至 28V 输入、3A、570kHz 降压转换器,本页介绍了TPS54331的产品说明、应用、特性等,并给出了与TPS54331相关的TI元器件型号供参考。
TPS54331 - 具有 Eco-mode 的 3.5V 至 28V 输入、3A、570kHz 降压转换器 - 转换器(集成开关) - DC/DC开关稳压器 - TI公司(Texas Instruments,德州仪器)
- 3.5 to 28-V Input Voltage Range
- Adjustable Output Voltage Down to 0.8 V
- Integrated 80-mΩ High-Side MOSFET Supports up to 3-A Continuous Output Current
- High Efficiency at Light Loads With a Pulse Skipping Eco-mode™
- Fixed 570 kHz Switching Frequency
- Typical 1-μA Shutdown Quiescent Current
- Adjustable Slow-Start Limits Inrush Currents
- Programmable UVLO Threshold
- Overvoltage Transient Protection
- Cycle-by-Cycle Current Limit, Frequency Fold Back, and Thermal Shutdown Protection
- Available in Easy-to-Use SOIC8 Package or Thermally Enhanced SOIC8 PowerPAD™ Package
- Supported by WEBENCH® Software Tool (www.TI.com/WEBENCH)
- Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers
- Industrial and Car-Audio Power Supplies
- 5-V, 12-V, and 24-V Distributed Power Systems
The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-μA shutdown supply-current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 device is available in an 8-pin SOIC package and 8-pin SO PowerPAD package that have been internally optimized to improve thermal performance.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS54331 | SOIC (8) | 4.90 mm × 3.90 mm |
SO PowerPAD (8) |