HV857L

Supertex inc. HV857L Low Noise, High Voltage EL Lamp Driver IC Features ►►Audible noise reduction ►►190 VPP output voltage for higher brightness ►►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 ►►Available in 8-Lead DFN and 8-Lead MSOP- packages Applications ►► Mobile cellular phones ►► Keypad backlighting ►► LCD backlighting ►► PDAs ►► Handheld wireless communication products ►► Global Positioning Systems (GPS) General Description The Supertex HV857L is a low noise, high voltage driver designed for driving Electroluminescent (EL) lamps of up to five square inches. It is the low noise version of the EL lamp driver HV857. 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 ...