Features and Benefits

  • MAX8631X Powers Up to 4 Main LEDs and 4 Flash LEDs
  • EV Kit Powers 4 Main LEDs and a Flash LED Module
  • 94% Maximum/85% Average Efficiency (PLED/PBATT) over Li+ Battery Discharge
  • 0.2% Typical LED Current Matching
  • Adaptive 1x/1.5x/2x Mode Switchover
  • Single-Wire, Serial-Pulse Interface (3% to 100% Brightness)
  • Thermal TA Derating Function
  • Two Internal Low-Noise 200mA LDOs
  • 2.7V to 5.5V Supply Voltage Range
  • Soft-Start, Overvoltage, and Thermal-Shutdown Protection
  • 4mm x 4mm 28-Pin Thin QFN IC Package
  • Fully Assembled and Tested

Product Details

The MAX8631X evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX8631X white LED 1x/1.5x/2x charge pump with two LDOs. The MAX8631X EV kit drives 4 white LEDs for backlighting and uses 4 flash LED drivers to drive a flash LED module at a high current. The two 200mA LDOs are also available for evaluation. In addition to the LED driver circuit and LDOs, the EV kit includes one pulse-generator circuit and two momentary pushbutton switches that are used for testing the single-wire, serial-pulse-dimming and flash features of the MAX8631X. The MAX8631X EV kit can also evaluate the MAX8631Y. To evaluate the MAX8631Y, order a free sample along with this EV kit.


  • Backlighting and Flash
  • Camera Phones and Smartphones
  • PDAs, Digital Cameras, and Camcorders