Micrel has introduced a range of mosfet buck regulators for output stability.

The MIC26400, MIC26600 and MIC26950 devices in the SuperSwitcher II family operate with an input supply voltage range from 4.5V to 26V and deliver an output current of 5A, 7A and 12A respectively. 

The devices have been designed to be stable with any capacitor and independent of output ESR.

This is an attempt to solve the problem of stability that power designers face with distributed output capacitance.

The buck regulators are capable of driving DC-DC loads at more than 95% efficiency with ±1 percent accuracy, with output adjustable down to 0.8V. 

These devices operate at a switching frequency of 300kHz and deliver very high efficiency across the DC load spectrum. 

Devices are designed to an enable pin for very low power shutdown, internal soft start, undervoltage lockout, internal compensation and a host of protection features such as prebias safe startup, over temperature protection, foldback current limit and short circuit protection.