The MIC4950 is a high-efficiency, 5A synchronous buck regulator with ultra-fast transient response perfectly suited for supplying processor core and I/O voltages from a 5V or 3.3V bus. The MIC4950 provides a switching frequency up to 3.3MHz while achieving peak efficiencies up to 95%. An additional benefit of high-frequency operation is very low output ripple voltage throughout the entire load range with the use of a small output capacitor. The MIC4950 is designed for use with a very small inductor, down to 1μH, and an output ceramic capacitor as small as 10μF without the need for external ripple injection. A wide range of output capacitor types and values can also be accommodated.
The MIC4950 supports safe start-up into a pre-biased output.
The MIC4950 is available in 10-pin 3mm x 4mm DFN package with an operating junction temperature range from -40°C to +125°C. The MIC4930 is pin-to-pin compatible with the 5A-rated MIC4950YFL.
This board enables the evaluation of the MIC4950, a fully integrated 5A switching regulator featuring HyperSpeed™ control and Power Good output indication. The MIC4950 is highly efficient throughout the entire output current range, exceeding 95% at5V input to 3.3V output. The MIC4950 provides accurate output voltage regulation under the most demanding conditions and responds extremely fast to a...
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