HV845
Initial Release
Low Noise Dual EL Lamp Driver
Features
► Low audible noise ► Independent input control for lamp...
HV845
Initial Release
Low Noise Dual EL Lamp Driver
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 12-Lead QFN/MLP package
Applications
► Dual display cellular phones ► Keypad and LCD backlighting ► Portable instrumentation ► Dual segment lamps ► Hand held wireless communication devices
General Description
The Supertex HV845 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 minimum number of passive components to drive two EL lamps. The nominal regulat...