General Description
The RE46C109 is intended for use in applications where low voltage regulation and a high voltage horn driver are required. The circuit features a voltage boost converter/regulator and driver circuit suitable for driving a piezoelectric horn. The horn enable pin activates the boost converter and horn driver circuit. Supply current is 6.5uA maximum when the boost regulator and horn driver are not in use. A 3V regulator is also provided for microprocessor voltage regulation. Low battery detection and signaling are also available. Interconnect pins are provided to allow communication in multiple unit environments. A power good pin monitors the status of the regulator output.

Features
• Low Quiescent Current
• 12V Boost Regulator
• Low Horn Driver Ron
• 3V Regulator, Other Options Available
• Low Battery Detection Interface
• Power Good and Brownout Circuits
• Device interconnection
• Available in DIP and SOIC packages
• Available in Standard Packaging or RoHS Compliant Pb Free Packaging

Applications
    Smoke detectors
    CO Detectors
    Personal Security Products
    Electronic Games
    Hand Held Instruments