HV843

HV843 Low Noise Dual EL Lamp Driver Initial Release Features ► Low audible noise ► Independent input control for lamp selection ► 180Vpp output voltage ► Split supply capability ► Patented output timing ► One miniature inductor to power both lamps ► Low shutdown current ► Wide input voltage range 2.0V to 5.8V ► Output voltage regulation ► No SCR output ► Available in DFN/MLP - 10 package Applications ► Dual display cellular phones ► Keypad and LCD backlighting ► Portable instrumentation ► Dual segment lamps ► Hand held wireless communication devices General Description The Supertex HV843 is a low noise, high voltage driver designed for driving two EL lamps with a combined area of 3.5 square inches. The input supply voltage range is from 2.0V to 5.8V. The device is designed to reduce the amount of audible noise emitted by the lamp. This device uses a single inductor and a minimum number of passive components to drive two EL lamps. The nominal regulate...