General Description

The Supertex HV850 is a high voltage electroluminescent (EL) Lamp Driver IC. It is designed to drive EL lamps of up to 1.5in2, with capacitive values up to 5.0nF. The 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 external inductors, diodes, and high voltage capacitors, components 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 5.0nF load (approx. 1.5in2 lamp)

► Output voltage regulation

► Enable function

► EL Lamp dimming

Applications

► Cell phone keypads and displays

► Transceivers

► MP3 players

► Watches

► Pagers

► Measuring instruments/gauges