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Semtech has introduced its SC283, which it claims is the world’s smallest 1.8A dual-channel regulator for point-of-load (POL) applications.

The regulator combines two step-down regulators in a 2 x 3 x 0.8mm, 18-pad MLPQ package.

With integrated VID pins to enable independent configuration and control of the output voltages of each regulator, the SC283 eliminates the need for two pairs of external feedback resistors, further reducing the overall design footprint of the device.

The SC283 POL regulator operates at a fixed switching frequency of 2.5MHz, enabling it to work with very small chip inductors.

It supports output currents up to 1.8A per channel, along with very high power conversion efficiency (up to 94 per cent), low shutdown current (1uA typical) and excellent transient response for fast system wake-up from low-power standby mode to full-power operation.

This combination of ultra-small size, high efficiency and high performance makes it ideal for powering a range of loads, including analogue-to-digital converters, microcontrollers, DSPs and digital ASICs in networking, communications, consumer, industrial and office automation equipment, as well as solid-state drive applications.

The integrated VID pins enable designers to individually configure the output voltages of the two regulators by tying those pins either high or low.

Each channel offers 15 predetermined output voltages via four control pins that are programmable from 0.8 to 3.3V.

Additionally, the VID pins can be switched on-the-fly during operation to enable dynamic control of the output voltages for voltage scaling and power savings when driving some microprocessors or digital ASICs.

The SC283 offers full protection features, including internal soft start to minimise inrush current, input under-voltage lockout, output over-voltage and current-limit protection, and over-temperature protection.

The SC283 is packaged in a low-profile MLPQ package with exposed thermal paddles for excellent heat sinking and is lead free, halogen free and fully RoHS compliant.

For applications requiring just one regulator, the SC183C offers the same performance with a single output.

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