R&E International
RE46C101
Piezoelectric Horn Driver and LED Driver Circuit
Product Specification
R&E International 1 DS-RE46C101-091201
King of Prussia PA
610-992-0727
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
CO Detectors
Personal Security Products
Electronic Toys
Features
Low Quiescent Current <100na
Low Driver Ron - 20
typical at 9V
Wide Operating Voltage Range
8 Pin DIP and SO Packages
Pin Configuration
LED
VDD
LEDEN
FEED
HRNEN
HORNS
HORNB
VSS
1
8
Absolute maximum ratings
Supply Voltage Vdd .....................-.5V to +18V
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
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
R&E International
RE46C101
Piezoelectric Horn Driver and LED Driver Circuit
Product Specification
R&E International 2 DS-RE46C101-091201
King of Prussia PA
610-992-0727
Electrical Characteristics at TA = 25
C, VDD = 9V, Vss = 0V (unless otherwise noted).
Parameter
Test
Pin
Test Conditions
Limits
Min Typ Max
Units
Supply Voltage
Vdd
Operating
6.0 9.0 16
V
Supply Current
Vdd
Hrnen, Leden = 0V
100
nA
Input Leakage
Hrnen ,
Leden
Vin=Vdd or Vss
100
nA
Feed
Feed=+22V
Feed = -10V
20 50
-50 -15
uA
Input Voltage Low
Hrnen ,
Leden
1
V
Input Voltage High
Hrnen ,
Leden
2.3
V
Output Low Voltage
Horns
or
Hornb
LED
Iout= 16mA, Vdd=9V
Vdd =7.2V
Iout=10mA, Vdd=7.2V
0.3 0.5
0.9
0.5 1.0
V
V
V
Output High Voltage
Horns
or
Hornb
Iout= -16mA, Vdd =9V
Vdd=7.2V
8.5 8.7
6.3
V
V
Functional Block Diagram
7
4
6
1
8
3
5
2
FEED
HORNS
HORNB
LED
HRNEN
VDD
VSS
LEDEN
R&E International
RE46C101
Piezoelectric Horn Driver and LED Driver Circuit
Product Specification
R&E International 3 DS-RE46C101-091201
King of Prussia PA
610-992-0727
Typical Application
3
7
5
RE46C101
1
2
4
LED
VDD
LEDEN
FEED
VSS
HORNB
HORNS
HRNEN
8
6
Piezo
9V
LED Enable
Active High
Horn Enable
Active High
330
1.5M
200K
1nF
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