General Description
The MAX1626/MAX1627 step-down DC-DC controllers operate over a 2.6V to 16.5V input voltage range. The controllers deliver load current from 1mA to more than 2A. The MAX1626 has pin-selectable 3.3V and 5V outputs. The MAX1627 supports adjustable outputs from 1.3V to 16V.

Benefits and Features
• Reduce External Components and Total Cost
   • 300KHz PWM Switching Reduces Component Size
   • Tiny Surface-Mount Inductor
• Reduce Power Dissipation
   • > 90% Efficiency from 3mA to 2A Loads
   • Low Dropout Voltage
   • 100% Maximum Duty Cycle
• Reduce Number of DC-DC Controllers to Stock
   • Wide 2.6V to 16.5V Input Voltage Options
   • Selectable 3.3V and 5V or Adjustable 1.3V to 16V
      Output Voltage Options
• Reduce System Power Consumption
   • 90µA Max Quiescent Current
   • 1µA Max Shutdown Current
• Operates Reliably in Adverse Environment
   • Soft-Start Limits Startup Current
   • Current-Limited Control Scheme
• Increase Design Flexibility
   • External P-Channel MOSFET Allows Output Power
      of > 12.5W

Applications
• 5V to 3.3V Green PC Applications
• Battery-Powered Applications
• Handheld Computers
• High-Efficiency Step-Down Regulation
• Low-Cost Notebook Computer Supplies
• Minimum Component DC-DC Converters
• PCMCIA Power Supplies
• PDAs and Other Handheld Devices
• Portable Terminals