Microchip’s new MCP1640 is a synchronous boost regulator which features an operating voltage down to 0,35 V, quiescent current as low as 19 µA and shutdown current of less than 1 μA.
With integrated dual FET transistors and output currents up to 350 mA, the 500 kHz device enables compact, longer-lasting battery applications in the consumer electronics market and others.
The regulator’s operating voltage of down to 0,35 V and start-up voltage of 0,65 V enable 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 announced the MCP1640 synchronous boost converter evaluation board, using the MCP1640 and demonstrating 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 2 x 3 mm DFN packages. When disabled, the MCP1640 disconnects the path from input to output for a true disconnect.
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