Power Electronics

4A Dual Point-of-Load Regulator

Semtech Corp. announced the latest device in its buck regulator platform. The new SC286 is the world's smallest 4A, dual-channel regulator for point-of-load (POL) applications. It combines two step-down regulators each with 15 preset output voltages controlled by four on-chip voltage identification (VID) pins, all in an ultra-small, low-profile 4 x 4 x 0.6mm package enabling a compact, overall design footprint of less than 200mm2. This combination of features lets designers optimize power conversion to support more features in less space without the inventory challenges associated with using multiple regulators.

The SC286 supports output currents up to 4A per channel, along with very high power conversion efficiency (up to 95%), low shutdown current (1µA typ.), automatic power save for high light-load efficiency, and excellent transient response. The combination of ultra-small size, high efficiency and high performance makes this device an ideal solution for powering a wide range of loads, including analog-to-digital converters, microcontrollers, DSPs and digital ASICs in networking, communications, consumer, industrial and office automation equipment, including router and network cards, printers and LCD TVs.

The SC286 further simplifies power supply design by integrating the regulator, loop compensation components, power MOSFETs and MOSFET drivers on one chip. This eliminates the need for external loop stabilization components and programming resistors, making component selection and layout much easier, while contributing to the small design footprint.

The SC286 is packaged in a low-profile, thermally enhanced 4 x 4 x 0.6mm MLPQ 28-pad package. For applications requiring one regulator, the SC186 offers the same performance, with a single output.

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