The Supertex HV857DB1 demo board contains all necessary circuitry to demonstrate the features of the HV857 EL lamp driver.
Simply connect it to a power supply and a lamp. For additional assistance in designing EL driver circuits, please refer to application notes AN-H33 (effect of external components on performance of Supertex EL drivers) and AN-H43 (EL lamp driver circuits to reduce audible lamp noise).

Specifications
Input Voltage 1.8V to 5.0V
Supply Current 25mA
Lamp Size Range up to 2.6in2
Lamp Frequency 250Hz
Converter Frequency 80KHz