R&E International

A Subsidiary of Microchip Technology Inc.

RE46C104

Piezoelectric Horn Driver and Voltage Converter

Product Specification

General Description

The RE46C104 is a piezoelectric horn driver with

voltage converter to provide maximum audibility in

low voltage applications. The feedback control pin is

designed for use with self-oscillating piezoelectric

horn but can also be used in direct drive

applications. The built-in charge pump voltage

converter provides increased supply voltage for the

horn drivers allowing outputs to swing from Vss to 2

x Vdd. A charge pump enable pin is provided to

minimize supply current when not in use.

Applications

Smoke detectors

CO Detectors

Personal Security Products

Electronic Toys

Features

•

Low Quiescent Current

•

Low Driver Ron

•

Wide Operating Voltage Range

•

Available in Standard Packaging or RoHS

Compliant Pb Free Packaging

Pin Configuration

N/C

FEED

CAP-

Vss

HRNEN

N/C

CAP+

N/C

Vdd

CPMPEN

HORNS

VPOS

N/C

HORNB

1

14

Absolute maximum ratings

Supply Voltage Vdd ........………………………………….......-.5V to +9.0V

Input voltage Range Vin ...…………………………………..... -.3V to VDD+.3V, except FEED

FEED Input Voltage Range Vinf …………………………...… -10V to +22V

Input Current Iin ..............…………………………………..... 10mA, except FEED

Operating Temperature .......………………………………….. 0 to 50

°C

Continuous Output Current (HornS, HornB, or Vpos)…..….. 30mA

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are

stress ratings only and operation at these conditions for extended periods may affect device reliability.

This product utilizes CMOS technology with static protection; however proper ESD prevention procedures should be

used when handling this product. Damage can occur when exposed to extremely high static electrical charges

© 2009 Microchip Technology Inc.

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