R&E International A Subsidiary of Microchip Technology Inc. RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification General Description Features 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 Low Quiescent Current Low Driver Ron Wide Operating Voltage Range Available in Standard Packaging or RoHS Compliant Pb Free Packaging Pin Configuration N/C 1 14 N/C FEED Vdd CAP- CPMPEN Vss HORNS CAP+ HORNB HRNEN N/C VPOS N/C 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 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International A Subsidiary of Microchip Technology Inc. Electrical Characteristics at TA = 25°C, VDD = 5V, Vss = 0V (unless otherwise noted). Parameter Test Pin Test Conditions Min Limits Typ Max 4.0 5.0 8.0 V 100 500 nA Supply Voltage Vdd Operating Standby Supply Vdd Hrnen, Cpmpen = Vss Current Units Feed = Vss ; Vdd = 5V Vdd Hrnen, Cpmpen = Vss 500 nA Feed = Vss ; Vdd = 8V Supply Current Vdd 200 Hrnen = Vss 500 uA 100 nA 50 uA Cpmpen = Vdd No Loads; See note 1 Input Leakage Hrnen & Cpmpen FEED Vin = Vdd or Vss -100 Feed = +22V 20 Cpmpen = Vdd FEED Feed = -10V -50 -15 uA Cpmpen = Vdd Input Voltage Low Input Voltage High Output Low Voltage Output High Voltage Vpos Output Voltage Charge Pump Hrnen & Cpmpen Hrnen & Cpmpen Horns or Hornb Horns or Hornb Vpos 1.0 V 0.5 V V 2.3 Iout = 16mA Cpmpen = Vdd Iout = -16mA Cpmpen = Vdd Iout = -16mA Cpmpen = Vdd Hrnen = Vss 0.3 8.5 Vpos 8.7 V 8.9 V 16 kHz 85 % 99 % Oscillator Freq Charge Pump Power Vpos Iout = -16mA C1=C2=10uF Vpos No Loads C1=C2=10uF Efficiency Charge Pump 95 Voltage Conversion Efficiency © 2009 Microchip Technology Inc. DS22164A-page 2 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International A Subsidiary of Microchip Technology Inc. Typical Application Charge Pump Enable Active High +5V 1 14 N/C N/C FEED VDD 2 13 3 12 CAP- CPMPEN 4 C1 11 VSS HORNS CAP+ HORNB 5 Horn Enable Active High 6 7 10 HRNEN N/C Note: C1 = 10uF C2 = 10uF C3 = 1nF R1 = 1.5Mohm R2 = 200kohm © 2009 Microchip Technology Inc. VPOS Piezo 9 8 N/C RE46C104 C2 C3 R1 R2 DS22164A-page 3 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International A Subsidiary of Microchip Technology Inc. Functional Block Diagram VDD 13 VSS 4 VDD Substrate Logic 9 5 CAP+ CAP- VPOS 3 Level Shifters CPMPEN 12 Oscillator and Logic VPOS 10 HRNEN 6 Level Shifter 11 2 HORNB HORNS FEED 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 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International A Subsidiary of Microchip Technology Inc. Trademarks 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. 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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, 32 logo, PowerCal, PowerInfo, PICDEM.net, PICtail, PIC 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, KEELOQ® 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