Synchronous Boost Regulator from Microchip Enables Longer-Lasting Battery Applications

Microchip announces the MCP1640 Synchronous Boost Regulator, which features an operating voltage down to 0.35V, quiescent current as low as 19µA, and shutdown current of less than 1µA. With integrated dual FET transistors and output currents up to 350mA, the 500kHz MCP1640 regulator enables compact, longer-lasting battery applications in the consumer electronics market among others.

The MCP1640 regulator’s operating voltage of down to 0.35V and start-up voltage of 0.65V allows use with even a single, completely drained Alkaline, NiMh or NiCd battery cell. A PWM/PFM option enables the device’s low quiescent and shutdown currents, and provides up to 96% efficiency; allowing for longer battery run times. The regulator’s two integrated FET transistors reduce component count, resulting in smaller overall designs.

Microchip also announces the MCP1640 Synchronous Boost Converter Evaluation Board, (part # MCP1640EV-SBC). The board uses the MCP1640 step-up converter and demonstrates the minimum number of components for applications powered by one-, two-, or three-cell Alkaline or NiCd/NiMH batteries; and one-cell Li-Ion or Li-Polymer batteries. The board also shows example PCB layouts for the MCP1640 in 6-pin SOT-23 and 2mm x 3mm DFN packages. It enables designers to evaluate the MCP1640’s wide input voltage (0.35 to 5.5V) and low start-up voltage (0.65V), as well as three common output voltages - 2.0, 3.0 and 5.0V. When disabled, the MCP1640 disconnects the path from input to output for a true disconnect. The board can be purchased today, at www.microchipdirect.com. For more information, go to www.microchip.com.

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