2 MHz Switching Regulator for Handheld Devices - MCP1603 - Microchip

Microchip announced the new low-power MCP1603, a 2 MHz, 500 mA switching regulator, ideal for reducing heat dissipation and extending battery life in a variety of handheld  devices.

The MCP1603 switching regular offers important features like small footprint and high efficiency (90%), which are essential to the rapidly growing handheld and battery-operated device market. The switcher also features low quiescent current of 45 µA, standby current of only 100 nA and auto transition from PWM to PFM modes for lower energy use and heat dissipation, as well as longer battery life.

Microchip MCP1603 Switching Regular

This new switching regulator provides fixed and adjustable output voltages, under voltage lockout (UVLO) and automatic PWM (Pulse-Width-Modulation) to PFM (Pulse-Frequency-Modulation) mode transition.

Art Eck, Microchip, said:

The MCP1603 switcher's unique feature set, plus the ability to operate at 100% duty cycle with UVLO, overtemperature and overcurrent protection-as well as internal compensation-mean that very sophisticated designs can be achieved with little effort on the part of the designer…

With an input voltage range of 5.5 to 2.7V and either an adjustable output voltage range of 0.8 to 4.5V or a fixed output voltage range of 1.2V to 3.3V, the MCP1603 switcher covers the entire Li-Ion, Li-Polymer, NiCd and NiMH voltage ranges. This means that users can employ these types of batteries in their electronic devices, for extremely efficient operation.

Microchip also announced the a $25 MCP1603 Evaluation Board, which demonstrates using the MCP1603 as a Buck switcher.

The MCP1603 switching regulator is available now in TSOT-23 and DFN (2 mm x 3 mm) packages. Price: $0.88 and $0.95 respectively (in 10K unit qty)

More info: Microchip MCP1603 Switching Regulator