MICROCHIP MIC4930YFL-T5

A high-efficiency, 3A 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. It provides a switching frequency up to 3.3 MHz 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. It is designed for use with a very small inductor, down to 1 μH, and an output ceramic capacitor as small as 10 μF without the need for external ripple injection. A wide range of output capacitor types and values can also be accommodated. It supports safe start-up into a pre-biased output. It is available in a 10-pin 3 mm × 4 mm DFN package with an operating junction temperature range from -40°C to +125°C. It is pin-to-pin compatible with the 5A-rated MIC4950YFL.

• Input Voltage: 2.7V to 5.5V
• 3A Output Current
• Up To 95% Efficiency
• Up To 3.3 MHz Operation
• Safe Start-Up into a Pre-Biased Output
• Power Good Output
• Ultra-Fast Transient Response
• Low Output Voltage Ripple
• Low RDS(ON) Integrated MOSFET Switches
• 0.01 μA Shutdown Current
• Thermal Shutdown and Current Limit Protection
• Output Voltage as low as 0.7V
• 3mm×4mm DFN-10L
• -40°C to +125°C Junction Temperature Range

• DTVs
• Set-Top Boxes
• Printers
• DVD Players
• Distributed Power Supplies