General Description

The Supertex HV833 is a high voltage driver designed for driving EL lamps of up to 35nF (10-12in2). The input supply voltage range is from 1.8V to 6.5V. The device uses a single inductor and a minimum number of passive components. The nominal regulated output voltage that is applied to the EL lamp is ±90V. The chip can be enabled/disabled by connecting the resistor on RSW-OSC to VDD/ground.

Features

❏ 1.8V to 6.5V operating supply voltage

❏ DC to AC conversion

❏ Separately adjustable lamp and converter frequency

❏ Output voltage regulation

❏ Enable/disable function

❏ Patented output timing for high efficiency

❏ <100nA shutdown current

❏ Split supply capability

❏ LCD backlighting

Applications

❏ Portable Transceivers

❏ Remote Control Units

❏ Calculators

❏ PDAs

❏ Global Positioning Systems (GPS)