TPS54332

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54332 SLVS875C – JANUARY 2009 – REVISED NOVEMBER 2014 TPS54332 3.5-A, 28-V, 1-MHz, Step-Down DC-DC Converter With Eco-Mode™ 1 Features 1 3.5-V to 28-V Input Voltage Range Adjustable Output Voltage Down to 0.8 V Integrated 80-mΩ High-Side MOSFET Supports up to 3.5-A Continuous Output Current High Efficiency at Light Loads With a Pulse- Skipping Eco-Mode™ Fixed 1-MHz 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 Foldback and Thermal Shutdown Protection Available in Thermally Enhanced 8-Pin SOIC PowerPAD™ Package Supported by WEBENCH™ Tool (http://www.ti.com/lsds/ti/analog/webench/overvie w.page) 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 TPS54332 is a 28-V, 3.5-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 batterypowered applications. Current mode control with internal slope compensation simplifies the externa...