Features and Benefits

  • Wide Brightness Adjustment Range
  • Open Lamp Protection with 2s Timeout
  • "Buck" Switch and Other Single-Point Fault Protection
  • Brightness Adjustable Through SMBus Interface or On-Board Potentiometer
  • No Flicker at Low Brightness
  • High Power to Light Efficiency
  • I²C/SMBus Compatible
  • Easy-to-Use Menu-Driven Software
  • Assembled and Tested
  • Includes:
    • Windows 95/98-Compatible Software (3.5in Floppy Disk)
    • Demo PC Board

Product Details

The MAX1739 evaluation system (EV system) consists of a MAX1739 evaluation kit (EV kit) and a companion Maxim SMBus™ interface board.

The MAX1739 EV kit is an assembled and tested PC board that demonstrates the MAX1739 wide brightness range cold-cathode fluorescent lamp (CCFL) backlight controller. The EV kit can control the brightness of a user-supplied lamp through either the SMBus interface or by an on-board potentiometer. Figure 1 shows the MAX1739 EV kit main display.

The Maxim SMBus interface board (MAXSMBus) allows an IBM®-compatible PC to use its parallel port to emulate an Intel® system management bus (SMBus) 2-wire interface. Windows® 95/98-compatible software provides a user-friendly interface to exercise the features of the MAX1739. The program is menu driven and offers a graphic interface with control buttons and status display.

Order the MAX1739EVSYS for a complete PC-based evaluation of the MAX1739. Order the MAX1739EVKIT if you already have an SMBus interface.


  • LCD Displays
  • Palmtop Computers