R&E International
RE46C105
Piezoelectric Horn Driver with Voltage Regulator and LED Driver
Product Specification
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
Pin Configuration
LBOUT
LBSTRB
LBSET
LED
VDD
LEDEN
FEED
Applications
Smoke detectors
CO Detectors
Personal Security Products
Electronic Toys
1
14
REGEN
REGOUT
REGSEL
HRNEN
HORNS
HORNB
VSS
Absolute maximum ratings
Supply Voltage Vdd ........………………………………….......-.5V to +14V
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 .......………………………………….. -40 to 85°C
Continuous Output Current (HornS, HornB) .……………….. 30mA
Continuous Output Current (REGOUT) .…………………….. 55mA
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.
Telephone 610.992.0727
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Facsimile 610.992.0734
This datasheet contains PROPRIETARY information.
E-mail: rande@randeint.com
DS-RE46C105-011507
RE46C105
Piezoelectric Horn Driver with Voltage Regulator and LED Driver
Product Specification
R&E International
Electrical Characteristics at TA = 25°C, VDD = 9V, Vss = 0V (unless otherwise noted).
Parameter
Supply Voltage
Standby Supply
Current
Input Leakage
Test
Pin
Vdd
Vdd
Hrnen,Leden,
Lbstrb,Regen
FEED
FEED
Hrnen,Leden,
Lbstrb,Regen
Hrnen,Leden
Lbstrb,Regen
Horns or Hornb
Test Conditions
Operating
Hrnen=Lbstrb=Leden=Vss
Regen=Vdd; No Loads
Vin=Vdd or Vss
Feed = +22V
Feed = -10V
Limits
Min Typ Max
6.0 9.0
13.8
3.5
-100
-50
2.3
20
-15
100
50
1.0
Units
V
uA
nA
uA
uA
V
V
Input Voltage Low
Input Voltage High
Output Low Voltage
Output High
Voltage
LED
LBout
Horns or
Hornb
LBout
Low Battery
VoltageThreshold
Low Battery
Voltage Hysteresis
Lbstrb to Lbout
Active delay
Regulator Voltage
Vdd
Lbstrb
Lbstrb, Lbout
Regout
Iout=16mA Vdd=9V
Vdd=7.2V
Iout=10mA Vdd=7.2V
Iout=100uA
Iout=-16mA Vdd=9V
Vdd=7.2V
Iout=-100uA Regsel=Vdd
Regsel=Vss
Lbstrb=Vdd,
Vdd decreasing in voltage
T
A
=-40 to 85°C See note #3
Lbstrb=Vdd
Vdd increasing in voltage
Lbstrb=Vdd
Iout<50mA Regsel=Vdd
Iout<50mA Regsel=Vss
T
A
=-40 to 85°C See note #3
6V<Vdd<12V
No load
0mA<Iout<50mA
Regsel=Vdd or Vss
Falling edge of Vdd
Vdd=4.5V; Regout=2V
Regsel=Vdd; Iout > 1mA
Regsel=Vss; Iout > 1mA
0.3
0.5
0.3
8.7
4.75
3.0
0.5
0.9
1.0
0.5
8.5
6.3
4.5
2.8
7.2
7.80
V
V
V
V
V
V
V
V
V
300
500
4.75
3.10
5.0
3.3
30
100
5.0
25
6.0
4.0
6.5
4.3
5.25
3.50
mV
uS
V
V
mV
mV
V
mA
V
V
Line Regulation
Load Regulation
Brown-Out
Threshold Voltage
*See note #1
Regout
Regout
Vdd
4.5
15
5.5
3.7
5.5
Brown-Out Pull
Down Current
Regout Overvoltage
Clamp
*See note #2
Regout
Regout
Telephone 610.992.0727
Page 2 of 5
Facsimile 610.992.0734
This datasheet contains PROPRIETARY information.
E-mail: rande@randeint.com
DS-RE46C105-011507
RE46C105
Piezoelectric Horn Driver with Voltage Regulator and LED Driver
Product Specification
R&E International
Notes:
1/ The brown-out threshold voltage is the Vdd voltage at which the regulator will be disabled and Regout will be
pulled to Vss.
2/ In normal operation, the regulator will provide high-side current of up to 20mA, but current sinking capability is
typically under 1uA. The over-voltage clamp is intended to limit the voltage at REGOUT when it is pulled up by an
external source.
3/ The limits shown are 100% tested at 25C only. Test limits are guard-banded based on temperature
characterization to guarantee compliance at temperature extremes.
Typical Application
Telephone 610.992.0727
Page 3 of 5
Facsimile 610.992.0734
This datasheet contains PROPRIETARY information.
E-mail: rande@randeint.com
DS-RE46C105-011507
RE46C105
Piezoelectric Horn Driver with Voltage Regulator and LED Driver
Product Specification
R&E International
Functional Block Diagram
REGEN
14
VDD
5
Bandgap
Reference
13
REGOUT
VSS
1
REGSEL
12
Output
Adjust
Clamp &
Shutdown
Circuit
Vdd
1
LBSET
3
LBOUT
LBSTRB
2
7
FEED
HRNEN
11
10
HORNS
9
4
LEDE
6
HORNB
LED
Telephone 610.992.0727
Page 4 of 5
Facsimile 610.992.0734
This datasheet contains PROPRIETARY information.
E-mail: rande@randeint.com
DS-RE46C105-011507
RE46C105
Piezoelectric Horn Driver with Voltage Regulator and LED Driver
Product Specification
R&E International
R&E INTERNATIONAL, Inc.
reserves the right to make changes without further notice to any
products herein to improve reliability, function or design.
R&E INTERNATIONAL, Inc.
does not assume any liability arising out of the application or use of any product or circuit described herein;
neither does it convey any license under its patent rights, nor the rights of others.
R&E INTERNATIONAL, Inc.
products are not authorized for use as critical components in life support devices or systems without the express
written approval of the President of
R&E INTERNATIONAL, Inc.
Life support devices or systems are devices or systems which are intended
for surgical implant into the body to support or sustain life, and whose failure to perform, when properly used in accordance with instructions
for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. A critical component is any component
of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.
Telephone 610.992.0727
Page 5 of 5
Facsimile 610.992.0734
This datasheet contains PROPRIETARY information.
E-mail: rande@randeint.com
DS-RE46C105-011507
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