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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 Page 1 of 5
Facsimile 610.992.0734 This datasheet contains PROPRIETARY information.
E-mail:
[email protected] 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
Min 6.0
Limits Typ Max 9.0 13.8 3.5 100 20 -15 50 1.0
Units V uA nA uA uA V V
-100 -50 2.3
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 TA=-40 to 85°C See note #3 Lbstrb=Vdd Vdd increasing in voltage Lbstrb=Vdd Iout<50mA Regsel=Vdd Iout<50mA Regsel=Vss TA=-40 to 85°C See note #3 6V
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: [email protected] 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: [email protected] 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 .