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-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
●(http://www.ti.com/lsds/ti/analog/webench/overview.page)
