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2A buck regulator boasts 94% efficiency, automatic power-save

14 Nov 2014

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Semtech Corp. has unleashed what it says is the smallest, dual independent 2A buck regulator with automatic power-save mode. The SC284P boasts an array of features that include seven digitally selectable preset output voltages (set independently, per channel), a power good signal, an internal 1.7ms soft-start and 100 per cent duty cycle capability.

According to the company, the part greatly simplifies the implementation of power trees for industrial, networking and consumer electronics platforms due to its high 94 per cent peak efficiency and small total board size.

"The compact 3x3mm package combined with pin selectable VOUTs, 2.5MHz switching frequency and a guaranteed maximum current limit to minimize inductor size provide the smallest possible overall solution size for a dual 2A regulator," said Alan Burchfield, product marketing director for power management group, Semtech. "The automatic power save adds a welcome boost in light-load efficiency versus competing devices that do not offer this feature, achieving greater than 70 per cent efficiency down to 1mA loads."

The SC284P features VIN range from 2.75-5.5V, selectable VOUT from 1-3.3V and IOUT of up to 2A per channel. It also flaunts up to 94 per cent peak efficiency with automatic power save at light loads. The device is also 100 per cent duty cycle capable, added the company.

The device is aimed at security and surveillance NVR and DVR systems; Ethernet switches, WLAN access points and small cells; set top boxes/streaming devices; and printers and projectors.

The SC284P (SC284PULTRC) is available in production quantities and is priced at $0.62 each in 3,000-piece lots. Semtech also offers comprehensive design assistance, including field- and factory-based support.

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