General Description
The Supertex HV859 is a high voltage driver designed for driving Electroluminescent (EL) lamps of up to 5 square inches. The input supply voltage range is from 1.8V to 5.0V. 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 ±105V. The chip can be enabled/disabled by connecting the resistor on RSW-OSC to VDD/ground.

FEATUREs
❐ Patented audible noise reduction
❐ Patented lamp aging compensation
❐ 210 VPP output voltage for higher brightness
❐ Patented output timing for high effi ciency
❐ Single cell lithium ion compatible
❐ 150nA shutdown current
❐ Wide input voltage range 1.8V to 5.0V
❐ Separately adjustable lamp and converter frequencies
❐ Output voltage regulation
❐ Split supply capability

APPLICATIONs
❐ LCD backlighting
❐ Mobile Cellular Phone keypads
❐ PDAs
❐ Handheld wireless communication products
❐ Global Positioning Systems (GPS)