R&E International

A Subsidiary of Microchip Technology Inc.

RE46C101

Piezoelectric Horn Driver and LED Driver Circuit

Product Specification

General Description

This product is intended for applications using a self

oscillating piezoelectric horn although it can be used

in direct drive applications. Feedback control and a

driver circuit are provided as well as a horn enable

function. The design also provides an open drain N-

channel driver suitable for use with a light emitting

diode.

Applications

Smoke detectors

© 2009 Microchip Technology Inc.

DS22163A-page 1

CO Detectors

Personal Security Products

Electronic Toys

Features

•

Low Quiescent Current (<100na)

•

Low Driver Ron - 20

Ω typical at 9V

•

Wide Operating Voltage Range

•

8 Pin DIP and SO Packages

•

Available in Standard Packaging or RoHS

Compliant Pb Free Packaging

Pin Configuration

8

1

HRNEN

LED

7

2

HORNS

VDD

6

5

3

HORNB

LEDEN

VSS

4

FEED

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

VALUE

UNITS

Supply Voltage

18

V

Input Voltage Range Except FEED

V

FEED Input Voltage Range

-10 to +22

V

Input Current except FEED

10

mA

Operating Temperature

0 to 50

°C

Storage Temperature

-55 to 125

°C

Maximum Junction Temperature

150

°C

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 charge.