TPS54231中文资料具有 Eco-mode™ 的 3.5V 至 28V 输入、2A、570kHz 降压转换器数据手册TI规格书

描述 Description

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.

特性 Features

• 3.5- to 28-V Input Voltage Range
• Integrated 80-mΩ High-Side MOSFET Supports up to 2 A Continuous Output Current
• Fixed 570-kHz Switching Frequency
• Adjustable Slow-Start Limits Inrush Currents
• Overvoltage Transient Protection
• Available in Easy-to-Use SOIC8 Package
• APPLICATIONS
• Industrial and Car Audio Power Supplies
• 5-V, 12-V and 24-V Distributed Power Systems

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