Clare’s CPC6826 (Data Sheet) is an electroluminescent (EL) lamp driver that is designed for applications operating with an input supply voltage range of 1.8V to 3.5V. The CPC6826 can also be used in a split-supply configuration, which enables the designer to specify operation with an input voltage as low as 1.5V.

Only five passive, external components are required: an inductor, a capacitor, and a diode to complete the boost switcher circuit; and two resistors to set the frequency of the two internal oscillators. These few components and the CPC6826 together generate the typical 170VP-P AC signal required to drive an EL lamp.

The configuration of the CPC6826, with designer access to important components, allows maximum design flexibility for optimal efficiency and brightness.