Features and Benefits

  • +1.8V to +12V Battery Input Voltage
  • +12.5V to +23.5V Adjustable Output
  • 20mA Output
  • 32-Level Internal DAC
  • 10µA Shutdown Current
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Details

The MAX1620 evaluation kit (EV kit) converts a +1.8V to +12V battery voltage to a +12.5V to +23.5V LCD backplane bias voltage for currents up to 20mA. Both the MAX1620 and MAX1621 include a 5-bit DAC, allowing digital software control of the bias voltage. The MAX1620 uses up/down digital signaling to adjust the DAC, and the MAX1621 uses the System Management Bus (SMBus™) 2-wire serial interface.

The MAX1620 EV kit is a fully assembled and tested surface-mount circuit board. It can also be used to evaluate the MAX1621.


  • Notebook Computers
  • Palmtop Computers
  • PDAs and Other Handheld Devices
  • Portable Data-Collection Terminals