Features and Benefits

  • High-Efficiency White LED Charge Pump
    • Individual Adaptive Supply for Each LED
    • 24mA to 0.1mA Dimming Range
    • Low 50µA (typ) Quiescent Current
  • Mono Class AB Loudspeaker Amplifier
    • 1.1W RMS Mono Output (8Ω, VIN = 5V)
    • Low 0.004% THD+N at 1kHz
    • High 90dB PSRR at 1kHz
    • Fully Differential Inputs
    • -9dB to +18dB Gain Settings in 3dB Steps
    • Low Quiescent Current
  • 2.7V to 5.5V Supply Voltage Range
  • Thermal Shutdown, Open- and Short-Circuit Protections
  • Fully Assembled and Tested
  • 16-Pin, 3mm x 3mm Thin QFN IC Package

Product Details

The MAX8678 evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) for evaluating the MAX8678 white LED charge pump with mono class AB audio amplifier. The MAX8678 EV kit drives up to four LEDs for backlighting. In addition, the EV kit is able to drive a combined loudspeaker/earpiece speaker for the mono audio amplifier. An on-board pulse generator provides an easy way to evaluate the MAX8678's amplifier gain adjustment and LED dimming.


  • Camera Phones
  • Cell Phones and Smartphones
  • PDAs, Digital Cameras, Camcorders

Documentation & Resources