Product Descriptions

The MP28128 is a 1.5MHz fixed frequency PWM synchronous step-down regulator with internal compensation. MP28128 operates from a 2.7V to 6V input and generates an adjustable output voltage from 0.8V to 0.9xVIN at up to 2.5A load current.

The MP28128 integrates an 80mΩ high-side switch and a 60mΩ synchronous rectifier for high efficiency without an external Schottky diode. With peak current mode control and internal compensation, the MP28128 based solution delivers a very compact footprint with a minimum component count. Fault condition protection includes hiccup short-circuit protection, cycle-by-cycle current limiting and thermal shutdown. Other features include frequency synchronization input, internal softstart and power good output.

The MP28128 is available in a small 3mm x 3mm 10-lead QFN package.

Product Features

• 2.5A Output Current

• Input Operation Range: 2.7V to 6V

• 1.5 PERCENT Output Accuracy

• Internal Power MOSFET Switches

• All Ceramic Capacitor Design

• 1.5MHz Fixed Switching Frequency

• Internal Soft-Start

• Frequency Synchronization Input

• Power Good Output

• Cycle-by-Cycle Current Limiting

• Thermal Shutdown

• 3mm x 3mm 10-lead QFN Package 

Product Applications

• µP/ASIC/DSP/FPGA Core and I/O Supplies

• Printers and LCD TVs

• Network and Telecom Equipment

• Point of Load Regulators

Product Photos

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