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General Description

The MIC4684 is a high-efficiency 200kHz stepdown (buck) switching regulator. Power conversion efficiency of above 85 is easily obtainable for a wide variety of applications. The MIC4684 achieves 2A of continuous current in an 8-lead SO (small outline) package at 60°C ambient temperature.

Features

? SO-8 package with 2A continuous output current

? Over 85 efficiency

? Fixed 200kHz PWM operation

? Wide 4V to 30V input voltage range

? Output voltage adjustable to 1.235V

? All surface mount solution

? Internally compensated with fast transient response

? Over-current protection

? Frequency foldback short-circuit protection

? Thermal shutdown

Applications

? Simple high-efficiency step-down regulator

? 5V to 3.3V/1.7A converter (60°C ambient)

? 12V to 1.8V/2A converter (60°C ambient)

? On-card switching regulator

? Dual-output ±5V converter

? Battery charger