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