General Description

Supertex HV850 is a high voltage electroluminescent (EL) Lamp Driver IC. It is designed to drive EL lamps of up to 2.0in2, with capacitive values up to 4.5nF. HV850 converts a low voltage DC input to a high voltage AC output across an EL lamp. It uses a charge pump scheme to boost the input voltage eliminating the need for an external inductor, diode, and high voltage capacitor commonly found in conventional topologies.

Features

❐ No external components required when using an external EL clock frequency

❐ EL frequency can be set by an external resistor

❐ Low Noise

❐ DC to AC converter

❐ Drives up to 4.5nF load (approx. 2.02 inches)

❐ Output voltage regulation

❐ Enable function

Applications

❐ Cell phone keypads and displays

❐ Transceivers

❐ MP3 Players

❐ Watches

❐ Pagers

❐ Measuring instruments/gauges