General Description
The MCP1602 is a high efficient, fully integrated 500 mA synchronous buck regulator with a powergood monitor. The 2.7V to 5.5V input voltage range and low quiescent current (45 µA, typical) makes the MCP1602 ideally suited for applications powered from 1-cell Li-Ion or 2-cell/3-cell NiMH/NiCd batteries.

Features
• Over 90% Typical Efficiency
• Output Current: Up To 500 mA
• Power-Good Output with 262 ms Delay
• Low Quiescent Current: 45 µA (typical)
• Low Shutdown Current: 0.05 µA (typical)
• Automatic PWM to PFM Mode Transition
• Adjustable Output Voltage:
   - 0.8V to 4.5V
• Fixed Output Voltage:
   - 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V
• 2.0 MHz Fixed-Frequency PWM (Heavy Load)
• Internally Compensated
• Undervoltage Lockout (UVLO)
• Overtemperture Protection
• Overcurrent Protection
• Space Saving Packages:
   - 8-Lead MSOP
   - 8-Lead 3x3 DFN

Applications
• Cellular Telephones
• Portable Computers
• Organizers / PDAs
• USB Powered Devices
• Digital Cameras
• Portable Equipment
• +5V or +3.3V Distributed Systems