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