General Description

The MAX4990E high-voltage DC-AC converter is ideal for driving electroluminescent (EL) lamps. The MAX4990E features a wide +2.4V to +5.5V input range that allows the device to accept a wide variety of voltage sources such as single-cell lithium-ion (Li+) batteries and higher voltage battery chargers. The lamp outputs of the device generate up to 250V peak-to-peak output voltage for maximum lamp brightness.

Features

♦ ESD-Protected EL Lamp Outputs

    ±15kV Human Body Model

    ±4kV IEC 61000-4-2 Contact Discharge

    ±15kV IEC 61000-4-2 Air-Gap Discharge

♦ 250VP-P (MAX) Output for Highest Brightness

♦ Wide +2.4V to +5.5V Input Voltage Range

♦ Resistor-Adjustable Slew-Rate Control for Audible Noise Reduction

♦ Externally Driven Lamp and Switching Converter Frequencies

♦ Capacitor-Adjustable Lamp and Switching Converter Frequencies

♦ Low 100nA Shutdown Current

♦ DIM Input for Controlling Output Voltage Through DC Analog Voltage, PWM, or Resistor to GND

♦ Capacitor Adjustable for Slow Turn-On/-Off

♦ Space-Saving Packages 14-Pin, 3mm x 3mm TDFN

Applications

    Keypad Backlighting

    MP3 Players

    LCD Backlighting

    PDAs/Smartphones

    Automotive Instrument Clusters