Home > Microchip Technology Australia unveils 2 MHz 500 mA switching regulator

Microchip Technology Australia unveils 2 MHz 500 mA switching regulator

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article image 2 MHz 500 mA switching regulator

Microchip Technology Australia, a provider of microcontroller and analogue semiconductors, has released MCP1603, a 2 MHz, and 500 mA switching regulator.

This 2 MHz, 500 mA switching regulator, low-power switcher provides adjustable and fixed output voltages, under voltage lockout (UVLO) and automatic Pulse-Width-Modulation- (PWM) to Pulse-Frequency-Modulation- (PFM) mode transition - all in Thin SOT-23 (TSOT-23) and 2 mm x 3 mm DFN packages.

The MCP1603 is ideal for extending battery life and reducing heat dissipation in a variety of portable, handheld electronic devices.

Microchip Technology Australia has long supported the power-conversion market with its PIC microcontrollers, dsPIC Digital Signal Controllers (DSCs), voltage supervisors, low dropout regulators (LDOs), switching regulators and power drivers.

The MCP1603 switching regular extends this support by offering important features like small footprint and high efficiency (90%), which are essential to the rapidly growing handheld and battery-operated device market.

The switcher features low quiescent current of 45 µA, standby current of 100 nA and auto transition from PWM to PFM modes for lower energy use and heat dissipation, as well as longer battery life.

"The release of the MCP1603 switching regulator marks Microchip's continued commitment to the power-conversion market," said Bryan Liddiard, vice president of marketing with Microchip's Analogue and Interface Products Division.

"With products like the MCP1603, Microchip continues to meet the high efficiency and small product footprint needs of the electronics industry."

Art Eck, senior product marketing manager with Microchip's Analogue & Interface Products Division, said of the new device, "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 efficient operation.

Target applications for the MCP1603 switcher include portable, handheld devices such as portable computers, PDAs, USB-powered devices, digital cameras and +5V or +3.3V distributed systems.

Development Support:
Microchip Technology Australia has released MCP1603 Evaluation Board (Part # MCP1603EV), which demonstrates using the MCP1603 as a Buck switcher.

The MCP1603 switching regulator is available now in TSOT-23 and 2 mm x 3 mm DFN packages in 10,000-unit quantities.

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