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