Buck dc/dc converter targets PoL designs

The MIC26400, MIC26600, and MIC26950, members of the SuperSwitcher II family of integrated MOSFET buck regulators, target high-power-density dc/dc PoL applications. The devices operate with an input supply voltage range from 4.5 to 26 V and deliver an output current of 5, 7, and 12 A, respectively. The family incorporates the company’s Any Capacitor technique that provides capacitance independent of output ESR.

The family of buck regulators drives dc/dc loads at >95% efficiency, with ±1% accuracy, and output adjustable down to 0.8 V. They operate at 300-kHz switching frequency and feature an enable pin for very-low-power shutdown, internal soft start, undervoltage lockout, internal compensation and protection features such as prebias safe startup, over temperature protection, foldback current limit, and short-circuit protection. (Ea/1,000: MIC26400, $1.82; MIC26600, $2.20; MIC26950, $2.77 — available now.)

By Paul O’Shea

Micrel , San Jose , CA
Sales 408-944-0800
http://www.micrel.com