TPS54231

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54231 SLUS851D – OCTOBER 2008 – REVISED OCTOBER 2014 TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode™ 1 Features 1 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) 2 Applications 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 3 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...