General Description

The RE46C105 is a piezoelectric horn driver with a voltage regulator and an open drain NMOS driver suitable for use with a light emitting diode. It is intended for 9V battery applications which require a low voltage logic supply. The regulator can be operated at either 3.3V or 5V. The horn feedback control pin is designed for use with self-oscillating piezoelectric horn but can also be used in direct drive applications. A low battery detection circuit is also provided.

Features

• Low Quiescent Current

• Low Horn Driver Ron

• Voltage Regulation to 3.3V or 5V

• Low Battery Detection

• Available in DIP and SOIC packaging

• Available in Standard Packaging or RoHS Compliant Pb Free Packaging

Applications

Smoke detectors

CO Detectors

Personal Security Products

Electronic Toys