Conv DC-DC Single Step Down 3.5V to 28V 8-Pin SOIC T/R

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.

3.5-V to 28-V Input Voltage Range

Adjustable Output Voltage Down to 0.8 V

Integrated 80-mO 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