TPS54231是TI公司的一款转换器(集成开关)产品,TPS54231是具有 Eco-mode? 的 3.5 至 28V 输入、2A、570kHz 降压转换器,本页介绍了TPS54231的产品说明、应用、特性等,并给出了与TPS54231相关的TI元器件型号供参考。
TPS54231 - 具有 Eco-mode? 的 3.5 至 28V 输入、2A、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 2 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
- 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 TPS54231 device is a 2-V, 2-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 fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS54231 | SOIC (8) | 4.90 mm × 3.90 mm |