R&E International A Subsidiary of Microchip Technology Inc. RE46C105 Piezoelectric Horn Driver with Voltage Regulator and LED Driver Product Specification Features General Description The RE46C105 is a piezoelectric horn driver with a Low Quiescent Current voltage regulator and an open drain NMOS driver Low Horn Driver Ron suitable for use with a light emitting diode. It is Voltage Regulation to 3.3V or 5V intended for 9V battery applications which require a Low Battery Detection low voltage logic supply. The regulator can be Available in DIP and SOIC packaging operated at either 3.3V or 5V. The horn feedback Available in Standard Packaging or RoHS control pin is designed for use with self-oscillating Compliant Pb Free Packaging piezoelectric horn but can also be used in direct drive applications. A low battery detection circuit is Pin Configuration also provided. Applications LBOUT REGEN 1 14 LBSTRB REGOUT Smoke detectors CO Detectors LBSET REGSEL Personal Security Products LED HRNEN Electronic Toys HORNS VDD LEDEN HORNB FEED VSS Absolute maximum ratings Supply Voltage V ...............-.5V to +14V dd Input voltage Range V ........ -.3V to V +.3V, except FEED in DD FEED Input Voltage Range Vinf ... -10V to +22V Input Current I ................... 10mA, except FEED in 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. 2009 Microchip Technology Inc. DS22167A-page 1 RE46C105 Piezoelectric Horn Driver with Voltage Regulator and LED Driver R&E International Product Specification A Subsidiary of Microchip Technology Inc. Electrical Characteristics at T = 25 C, V = 9V, V = 0V (unless otherwise noted). A DD ss Test Limits Parameter Pin Test Conditions Min Typ Max Units Vdd Supply Voltage Operating 6.0 9.0 13.8 V Vdd Standby Supply Hrnen=Lbstrb=Leden=Vss 3.5 uA Current Regen=Vdd No Loads Hrnen,Leden, Input Leakage Vin=Vdd or Vss -100 100 nA Lbstrb,Regen FEED Feed = +22V 20 50 uA FEED Feed = -10V -50 -15 uA Hrnen,Leden, Input Voltage Low 1.0 V Lbstrb,Regen Hrnen,Leden Input Voltage High 2.3 V Lbstrb,Regen Horns or Hornb Output Low Voltage Iout=16mA Vdd=9V 0.3 0.5 V Vdd=7.2V 0.9 V Iout=10mA Vdd=7.2V 0.5 1.0 V LED LBout Iout=100uA 0.3 0.5 V Horns or Output High Iout=-16mA Vdd=9V 8.5 8.7 V Hornb Voltage Vdd=7.2V 6.3 V Iout=-100uA Regsel=Vdd 4.5 4.75 V LBout Regsel=Vss 2.8 3.0 V Low Battery Lbstrb=Vdd, 7.2 7.80 V Vdd VoltageThreshold Vdd decreasing in voltage T =-40 to 85 C See note 3 A Low Battery Lbstrb=Vdd 300 mV Lbstrb Voltage Hysteresis Vdd increasing in voltage Lbstrb, Lbout Lbstrb to Lbout Lbstrb=Vdd 500 uS Active delay Regout Regulator Voltage Iout<50mA Regsel=Vdd 4.75 5.0 5.25 V Iout<50mA Regsel=Vss 3.10 3.3 3.50 V T =-40 to 85 C See note 3 A Line Regulation 6V<Vdd<12V 30 mV Regout No load Regout Load Regulation 0mA<Iout<50mA 100 mV Brown-Out Regsel=Vdd or Vss 4.5 5.0 5.5 V Vdd Threshold Voltage Falling edge of Vdd *See note 1 Brown-Out Pull Vdd=4.5V Regout=2V 15 25 mA Regout Down Current Regout Overvoltage Regsel=Vdd Iout > 1mA 5.5 6.0 6.5 V Regout *See note 2 Clamp Regsel=Vss Iout > 1mA 3.7 4.0 4.3 V 2009 Microchip Technology Inc. DS22167A-page 2