![background image](/sites/default/files/pdfhtml_microchip/22164A001.png)
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.
DS22164A-page 1
![background image](/sites/default/files/pdfhtml_microchip/22164A002.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
© 2009 Microchip Technology Inc.
DS22164A-page 2
Electrical Characteristics at TA = 25°C, VDD = 5V, Vss = 0V (unless otherwise noted).
Parameter
Test
Pin
Test Conditions
Limits
Min Typ Max
Units
Supply Voltage
Vdd
Operating
4.0 5.0 8.0
V
Standby Supply
Current
Vdd
Hrnen, Cpmpen = Vss
Feed = Vss ; Vdd = 5V
100 500
nA
Vdd
Hrnen, Cpmpen = Vss
Feed = Vss ; Vdd = 8V
500
nA
Supply Current
Vdd
Hrnen = Vss
Cpmpen = Vdd
No Loads; See note 1
200 500
uA
Input Leakage
Hrnen &
Cpmpen
Vin = Vdd or Vss
-100 100
nA
FEED
Feed = +22V
Cpmpen = Vdd
20 50
uA
FEED
Feed = -10V
Cpmpen = Vdd
-50 -15
uA
Input Voltage Low
Hrnen &
Cpmpen
1.0
V
Input Voltage High
Hrnen &
Cpmpen
2.3
V
Output Low Voltage
Horns or
Hornb
Iout = 16mA
Cpmpen = Vdd
0.3 0.5
V
Output High Voltage
Horns or
Hornb
Iout = -16mA
Cpmpen = Vdd
8.5 8.7
V
Vpos Output Voltage
Vpos
Iout = -16mA
Cpmpen = Vdd
Hrnen = Vss
8.9
V
Charge Pump
Oscillator Freq
Vpos
16
kHz
Charge Pump Power
Efficiency
Vpos
Iout = -16mA
C1=C2=10uF
85
%
Charge Pump
Voltage Conversion
Efficiency
Vpos
No Loads
C1=C2=10uF
95 99
%
![background image](/sites/default/files/pdfhtml_microchip/22164A003.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
Typical Application
© 2009 Microchip Technology Inc.
DS22164A-page 3
Charge Pump Enable
Active High
RE46C104
Piezo
Horn Enable
Active High
R1
R2
C3
1
N/C
2
FEED
3
CAP-
4
VSS
5
CAP+
6
HRNEN
7
N/C
14
N/C
13
VDD
12
CPMPEN
11
HORNS
10
HORNB
9
VPOS
8
N/C
C1
C2
+5V
Note:
C1 = 10uF
C2 = 10uF
C3 = 1nF
R1 = 1.5Mohm
R2 = 200kohm
![background image](/sites/default/files/pdfhtml_microchip/22164A004.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
Functional Block Diagram
13
6
4
VDD
VSS
CPMPEN
CAP+
CAP-
HRNEN
HORNS
HORNB
FEED
VPOS
Level
Shifters
9
5
3
12
Substrate Logic
VDD
Oscillator
and Logic
2
11
10
VPOS
Level
Shifter
Notes:
1/ The supply current specification is an average under steady state conditions.
The instantaneous current will exceed this value when C1 and C2 charge-up initially (after charge
pump is enabled) and during subsequent recharging of C1 and C2.
© 2009 Microchip Technology Inc.
DS22164A-page 4
![background image](/sites/default/files/pdfhtml_microchip/22164A005.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
Information contained in this publication regarding device
applications and the like is provided only for your convenience and
may be superseded by updates. It is your responsibility to ensure
that your application meets with your specifications. MICROCHIP
MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY
KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL,
STATUTORY OR OTHERWISE, RELATED TO THE
INFORMATION, INCLUDING BUT NOT LIMITED TO ITS
CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY
OR FITNESS FOR PURPOSE
.
Microchip disclaims all liability
arising from this information and its use. Use of Microchip devices in
life support and/or safety applications is entirely at the buyer’s risk,
and the buyer agrees to defend, indemnify and hold harmless
Microchip from any and all damages, claims, suits, or expenses
resulting from such use. No licenses are conveyed, implicitly or
otherwise, under any Microchip intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, K
EE
L
OQ
, K
EE
L
OQ
logo,
MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
FilterLab, Hampshire, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL, SmartSensor and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial Programming,
ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo,
MPLIB, MPLINK, mTouch, nanoWatt XLP, PICkit, PICDEM,
PICDEM.net, PICtail, PIC
32
logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
Endurance, TSHARC, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2009, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California and
India. The Company’s quality system processes and procedures are for its
PIC
®
MCUs and dsPIC
®
DSCs, K
EE
L
OQ
®
code hopping devices, Serial
EEPROMs, microperipherals, nonvolatile memory and analog products. In
addition, Microchip’s quality system for the design and manufacture of
development systems is ISO 9001:2000 certified.
© 2009 Microchip Technology Inc.
DS22164A-page 5
![background image](/sites/default/files/pdfhtml_microchip/22164A001.png)
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.
DS22164A-page 1
![background image](/sites/default/files/pdfhtml_microchip/22164A002.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
© 2009 Microchip Technology Inc.
DS22164A-page 2
Electrical Characteristics at TA = 25°C, VDD = 5V, Vss = 0V (unless otherwise noted).
Parameter
Test
Pin
Test Conditions
Limits
Min Typ Max
Units
Supply Voltage
Vdd
Operating
4.0 5.0 8.0
V
Standby Supply
Current
Vdd
Hrnen, Cpmpen = Vss
Feed = Vss ; Vdd = 5V
100 500
nA
Vdd
Hrnen, Cpmpen = Vss
Feed = Vss ; Vdd = 8V
500
nA
Supply Current
Vdd
Hrnen = Vss
Cpmpen = Vdd
No Loads; See note 1
200 500
uA
Input Leakage
Hrnen &
Cpmpen
Vin = Vdd or Vss
-100 100
nA
FEED
Feed = +22V
Cpmpen = Vdd
20 50
uA
FEED
Feed = -10V
Cpmpen = Vdd
-50 -15
uA
Input Voltage Low
Hrnen &
Cpmpen
1.0
V
Input Voltage High
Hrnen &
Cpmpen
2.3
V
Output Low Voltage
Horns or
Hornb
Iout = 16mA
Cpmpen = Vdd
0.3 0.5
V
Output High Voltage
Horns or
Hornb
Iout = -16mA
Cpmpen = Vdd
8.5 8.7
V
Vpos Output Voltage
Vpos
Iout = -16mA
Cpmpen = Vdd
Hrnen = Vss
8.9
V
Charge Pump
Oscillator Freq
Vpos
16
kHz
Charge Pump Power
Efficiency
Vpos
Iout = -16mA
C1=C2=10uF
85
%
Charge Pump
Voltage Conversion
Efficiency
Vpos
No Loads
C1=C2=10uF
95 99
%
![background image](/sites/default/files/pdfhtml_microchip/22164A003.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
Typical Application
© 2009 Microchip Technology Inc.
DS22164A-page 3
Charge Pump Enable
Active High
RE46C104
Piezo
Horn Enable
Active High
R1
R2
C3
1
N/C
2
FEED
3
CAP-
4
VSS
5
CAP+
6
HRNEN
7
N/C
14
N/C
13
VDD
12
CPMPEN
11
HORNS
10
HORNB
9
VPOS
8
N/C
C1
C2
+5V
Note:
C1 = 10uF
C2 = 10uF
C3 = 1nF
R1 = 1.5Mohm
R2 = 200kohm
![background image](/sites/default/files/pdfhtml_microchip/22164A004.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
Functional Block Diagram
13
6
4
VDD
VSS
CPMPEN
CAP+
CAP-
HRNEN
HORNS
HORNB
FEED
VPOS
Level
Shifters
9
5
3
12
Substrate Logic
VDD
Oscillator
and Logic
2
11
10
VPOS
Level
Shifter
Notes:
1/ The supply current specification is an average under steady state conditions.
The instantaneous current will exceed this value when C1 and C2 charge-up initially (after charge
pump is enabled) and during subsequent recharging of C1 and C2.
© 2009 Microchip Technology Inc.
DS22164A-page 4
![background image](/sites/default/files/pdfhtml_microchip/22164A005.png)
RE46C104
Piezoelectric Horn Driver and Voltage Converter
R&E International
Product Specification
A Subsidiary of Microchip Technology
Inc.
Information contained in this publication regarding device
applications and the like is provided only for your convenience and
may be superseded by updates. It is your responsibility to ensure
that your application meets with your specifications. MICROCHIP
MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY
KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL,
STATUTORY OR OTHERWISE, RELATED TO THE
INFORMATION, INCLUDING BUT NOT LIMITED TO ITS
CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY
OR FITNESS FOR PURPOSE
.
Microchip disclaims all liability
arising from this information and its use. Use of Microchip devices in
life support and/or safety applications is entirely at the buyer’s risk,
and the buyer agrees to defend, indemnify and hold harmless
Microchip from any and all damages, claims, suits, or expenses
resulting from such use. No licenses are conveyed, implicitly or
otherwise, under any Microchip intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, K
EE
L
OQ
, K
EE
L
OQ
logo,
MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
FilterLab, Hampshire, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL, SmartSensor and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial Programming,
ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo,
MPLIB, MPLINK, mTouch, nanoWatt XLP, PICkit, PICDEM,
PICDEM.net, PICtail, PIC
32
logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
Endurance, TSHARC, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2009, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California and
India. The Company’s quality system processes and procedures are for its
PIC
®
MCUs and dsPIC
®
DSCs, K
EE
L
OQ
®
code hopping devices, Serial
EEPROMs, microperipherals, nonvolatile memory and analog products. In
addition, Microchip’s quality system for the design and manufacture of
development systems is ISO 9001:2000 certified.
© 2009 Microchip Technology Inc.
DS22164A-page 5