The MIC4950YFL-TR is a high-efficiency, 5A synchronous buckregulator with ultra-fast transient response perfectly suitedfor supplying processor core and I/O voltages from a 5V or3.3V bus. The MIC4950YFL-TR provides a switching frequency upto 3.3MHz while achieving peak efficiencies up to 95%. Anadditional benefit of high-frequency operation is very lowoutput ripple voltage throughout the entire load range withthe use of a small output capacitor. The MIC4950YFL-TR isdesigned for use with a very small inductor, down to 1μH,and an output ceramic capacitor as small as 10μF withoutthe need for external ripple injection. A wide range ofoutput capacitor types and values can also beaccommodated.
The MIC4950YFL-TR supports safe start-up into a pre-biasedoutput.
The MIC4950YFL-TR is available in 10-pin 3mm x 4mm DFNpackage with an operating junction temperature rangefrom -40°C to +125°C. The MIC4930 is pin-to-pincompatible with the 5A-rated MIC4950YFL.
Feature
- Input voltage: 2.7V to 5.5V
- 5A output current
- Up to 95% efficiency
- Up to 3.3MHz 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
- 0.01μA shutdown current
- Thermal shutdown and current limit protection
- Output voltage as low as 0.7V
- -40°C to +125°C junction temperature range
- 3mm x 4mm DFN-10L
