HV861

Supertex inc. HV861 Dimmable, Low Noise, Dual EL Lamp Driver Features ► Adjustable output regulation for dimming ► Lamp fade-in/fade-out capability ► Low audible noise ► 180VPP output voltage for higher brightness ► 1.5V enable input logic high ► Single cell lithium ion compatible ► One miniature inductor to power both lamps ► Separately adjustable lamp and converter frequencies ► Split supply capability ► 16-Lead QFN package Applications ► Dual display cellular phones ► Keypad and LCD backlighting ► PDAs ► Handheld wireless communication products ► Global Positioning Systems (GPS) General Description The Supertex HV861 is a low noise, dimmable, high voltage, dual EL Lamp driver designed for driving two electroluminescent (EL) Lamps with a combined area of 5.0 square inches. The input supply voltage range is from 2.5V to 4.5V. Enable input logic high can go as low as 1.5V, which allows logic interface operating from typical 1.8V supplies. The device is ...