RE46C109 R&E International, Inc., RE46C109 Datasheet

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RE46C109

Manufacturer Part Number
RE46C109
Description
Voltage Regulator, Voltage Converter And Piezoelectric Horn Driver Product Specification
Manufacturer
R&E International, Inc.
Datasheet
RE46C109
Voltage Regulator, Voltage Converter and Piezoelectric Horn Driver
Product Specification
General Description
The RE46C109 is intended for use in applications
where low voltage regulation and a high voltage
horn driver are required. The circuit features a
voltage boost converter/regulator and driver circuit
suitable for driving a piezoelectric horn. The horn
enable pin activates the boost converter and horn
driver circuit. Supply current is 6.5uA maximum
when the boost regulator and horn driver are not in
use. A 3V regulator is also provided for
microprocessor voltage regulation. Low battery
detection and signaling are also available.
Interconnect pins are provided to allow
communication in multiple unit environments. A
power good pin monitors the status of the regulator
output.
Applications
Smoke detectors
CO Detectors
Personal Security Products
Electronic Games
Hand Held Instruments
Telephone 610.992.0727
Page 1 of 8
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage Range Except FEED, IO1, IO2
FEED Input Voltage Range
IO2 Input Voltage Range
IO1 (as input) Voltage Range
Input Current except FEED
Operating Temperature
Continuous Operating Current (Horn or VPOS)
Storage Temperature
Maximum Junction Temperature
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
This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
SYMBOL
Features
Pin Configuration
T
V
V
V
V
I
V
T
VDD
IO1
IODIR
IO2
LBST
PG
HRNEN
VSS
T
I
con
STG
infd
DD
io2
io1
in
in
A
J
Low Quiescent Current
12V Boost Regulator
Low Horn Driver Ron
3V Regulator, Other Options Available
Low Battery Detection Interface
Power Good and Brownout Circuits
Device interconnection
Available in DIP and SOIC packages
Available in Standard Packaging or RoHS
Compliant Pb Free Packaging
-.3 to VREG+.3
-.3 to V
-.3 to V
1
-10 to +22
-55 to 125
-40 to 85
VALUE
125
12
10
50
dd
dd
+.3
+ 6
E-mail: rande@randeint.com
DS-RE46C109-011207
16
UNITS
mA
mA
°C
°C
°C
V
V
V
V
V
VPOS
CAP+
CAP-
VREG
LBAT
HORNB
HORNS
FEED

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RE46C109 Summary of contents

Page 1

... RE46C109 Voltage Regulator, Voltage Converter and Piezoelectric Horn Driver Product Specification General Description The RE46C109 is intended for use in applications where low voltage regulation and a high voltage horn driver are required. The circuit features a voltage boost converter/regulator and driver circuit suitable for driving a piezoelectric horn. The horn enable pin activates the boost converter and horn driver circuit ...

Page 2

... R&E International Limits MIN TYP MAX UNITS 4.7 6.5 uA 350 uA -100 100 -50 - Vpos-.5 Vpos-.3 V Vreg -.5 Vreg -.3 V 10.7 11.8 12.7 V 150 kHz .17 *Vdd .2*Vdd .23*Vdd 2. 4.5 5.0 5 E-mail: rande@randeint.com DS-RE46C109-011207 V ...

Page 3

... IO2 (pin 4) (pin 3) Input Output Facsimile 610.992.0734 R&E International Limits MIN TYP MAX 3.7 4.0 4.3 0 500 25 60 150 -4 - 1.5 IO1 (pin 2) Input Output E-mail: rande@randeint.com DS-RE46C109-011207 UNITS V mA %Vreg %Vreg usec ...

Page 4

... RE46C109 Voltage Regulator, Voltage Converter and Piezoelectric Horn Driver Product Specification Telephone 610.992.0727 Page This datasheet contains PROPRIETARY and CONFIDENTIAL information. Functional Block Diagram Facsimile 610.992.0734 R&E International E-mail: rande@randeint.com DS-RE46C109-011207 ...

Page 5

... Interconnect block. IO1 (Pin 2, Input/Output) - This bi-directional pin provides an interface to additional RE46C109 IO1 pins. This serves as a communication link between separate modules. IODIR (Pin 3, Input) - This input provides control for the bi-directional pins IO1 and IO2 ...

Page 6

... Device Operation (Please refer to the functional block diagram) The RE46C109 consists of the following main functional blocks: band gap voltage reference, low drop-out voltage regulator (with over voltage clamp and power supply brownout protection), low battery detection, switched capacitor 12 volt boost regulator, horn driver and Interconnect logic. ...

Page 7

... The efficiency of the switched capacitor charge pump regulator varies with the applied input voltage and the load current. The approximate voltage efficiency is given by: Efficiency (%) = [VPOS/(2xVDD)]x100 Telephone 610.992.0727 Page This datasheet contains PROPRIETARY and CONFIDENTIAL information. Typical Application Circuit Facsimile 610.992.0734 R&E International E-mail: rande@randeint.com DS-RE46C109-011207 ...

Page 8

... Series Resistance) value with leads kept as short as possible. Capacitors with long leads increase ripple voltage due to lead inductance. Like all Low-Dropout Regulators, the RE46C109 requires an output capacitor connected between VREG (output) and VSS to stabilize the internal control loop. The recommended capacitance is 10uF. Capacitor values larger than 10uF are acceptable ...

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