Features and Benefits

  • Input Voltage Down to +0.8V
  • 3x3 White LED Array
  • Potentiometer-Adjustable Output Current Level (LED Brightness Control)
  • External Low-Loss N-Channel Switch
  • 10nA IC Shutdown Current
  • Operation Up to 500kHz Switching Frequency
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX1698 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains a boost switching-regulator current source and array of white LEDs. As configured, the circuit is set up to drive 3 banks of 3 series LED arrays at 20mA each; however, a wide variety of other configurations are possible. The IC can be powered from a separate +2.7VDC to +5.5VDC input, while LED power has a wider input range and can be supplied either from a logic supply or battery source.

The MAX1698 features digital soft-start and adjustable lossless LED current control. The MAX1698 EV kit demonstrates low quiescent current, open-circuit protection, and up to 90% efficiency for maximum battery life. Operation up to 500kHz allows the use of tiny surface-mount components.


  • Backlight for LCD Panels
  • Battery-Powered Backlight Applications
  • Cell Phones
  • Handy Terminals
  • PDAs

Documentation & Resources


Pricing displayed is based on 1-piece.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.