2MHz, 500 mA Switching Regulator

22nd May 2007

ES Admin

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Microchip has announced the MCP1603 - a 2 MHz, 500 mA switching regulator. It provides adjustable and fixed output voltages, operating efficiency of up to 90%, and is available in Thin SOT-23 (TSOT-23) and 2 mm x 3 mm DFN packages. The new device is ideal for extending battery life and reducing heat dissipation in a variety of portable, handheld electronic devices.

The switcher also features a low quiescent current of 45 μA, a standby current of only 100 nA, under voltage lockout (UVLO), over-temperature and over-current protection and auto transition from PWM to PFM modes for lower energy use and heat dissipation, as well as longer battery life. With an input voltage range of 2.7V to 5.5V and either an adjustable output voltage range of 0.8V to 4.5V, or a fixed output voltage range between 1.2V and 3.3V, the MCP1603 switcher can cover the entire Li-Ion,
Li-Polymer, NiCd and NiMH voltage range.

The MCP1603 Evaluation Board (Part number MCP1603EV) demonstrates using the MCP1603 as a Buck switcher. This board is available now at www.microchipdirect.com.

The MCP1603 switching regulator is available now. Samples can be ordered at sample.microchip.com, and volume orders can be placed at www.microchipdirect.com. For further information, visit Microchip’s Web site at www.microchip.com/MCP1603.