General Description
The MAX629 low-power DC-DC converter features an internal N-channel MOSFET switch and programmable current limiting. It is designed to supply positive or negative bias voltages up to ±28V from input voltages in the 0.8V to VOUT range, and can be configured for boost, flyback, and SEPIC topologies.

Features
♦ Internal, 500mA, 28V N-Channel Switch (No External FET Required)
♦ Generates Positive or Negative Output Voltages
♦ 80µA Supply Current
♦ 1µA Max Shutdown Current
♦ Up to 300kHz Switching Frequency
♦ Adjustable Current Limit Allows Use of Small, Inexpensive Inductors
♦ 8-Pin SO Package

Applications
    Positive or Negative LCD Bias Generators
    High-Efficiency DC-DC Boost Converters
    Varactor Tuning Diode Bias
    Palmtop Computers
    2-Cell and 3-Cell Battery-Powered Applications