製品概要

機能と利点

  • LCD Bias Outputs (+5V/25mA, +15V/100µA, -10V/100µA)
    Output Sequencing
    No External Diodes Required
    POS, NEG, and MAIN Are Autodischarged During Shutdown
  • LED Backlight Step-Up DC-DC Converter
    Series Connection for Uniform Illumination
    Supports Up to 8 LEDs at 25mA (max)
    900mW (max) Power
    Overvoltage Protection
    Low Input/Output Ripple
    Soft-Start
    Fast 1MHz PWM Operation for Small
    Component Size
    Temperature Derating Function (MAX1579)
  • High Efficiency
    Bias: 83% (5.0V at 25mA, 15V/-10V at 100µA)
    LED: 84% (6 LEDs at 20mA)
  • Independent Enable Inputs for LED and Bias Power
  • Thermal-Shutdown Protection
  • 1µA Shutdown Current
  • Tiny 4mm x 4mm Thin QFN Package
  • Fully Assembled and Tested
  • 製品概要

    The MAX1579 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX1578/ MAX1579. This MAX1579 EV kit drives six white LEDs in series for backlighting and includes complete bias supplies for small TFT displays. The internal charge pumps for the TFT bias supplies provide fixed +15V at 100µA for VON, -10V at 100µA for VOFF, and +5V at 25mA for the source driver. The MAX1579 EV kit can also evaluate the MAX1578. To evaluate the MAX1578, order a free sample along with this EV kit.

    Applications

    • Internet Appliances
    • LCD Displays with White LED Backlight
    • PDAs, Palmtops
    • Smartphones