TPS54232DR

The TPS54232 is a 28-V, nonsynchronous 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 TPS54232 is available in an 8-pin SOIC package.

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

Key features

• 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 2-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 Fold Back and Thermal Shutdown Protection
• Available in 8-Pin SOIC Package
• Supported by WEBENCH Software Tool