TPS54233

具有 Eco-mode 的 3.5V 至 28V 输入、2A、300kHz 降压转换器

The is a 28 V, 2 A non-synchronous buck converter that integrates a low RDSon 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 under-voltage 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 TPS54233 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

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3.5 V to 28 V Input Voltage Range

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Adjustable Output Voltage Down to 0.8 V

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Integrated 80 mΩ High Side MOSFET Supports

up to 2A Continuous Output Current

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High Efficiency at Light Loads with a Pulse

Skipping Eco-mode™

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Fixed 300 kHz Switching Frequency

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Typical 1 µA Shutdown Quiescent Current

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Adjustable Slow Start Limits Inrush Currents

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Programmable UVLO Threshold

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Overvoltage Transient Protection

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Cycle by Cycle Current Limit, Frequency Fold

Back and Thermal Shutdown Protection

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Available in Easy-to-Use SOIC8 Package

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Supported by WEBENCH® Software Tool

www..com/WEBENCH

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APPLICATIONS

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Consumer Applications such as Set-Top Boxes,

CPE Equipment, LCD Displays, Peripherals, and

Battery Chargers

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Industrial and Car Audio Power Supplies

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5V, 12V and 24V Distributed Power Systems

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