RE46C105

R&E International A Subsidiary of Microchip Technology Inc. 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. © 2009 Microchip Technology Inc. DS22167A-page 1 RE46C105 Piezoelectric Horn Driver with Voltage Regulator and LED Driver Product Specification R&E International A Subsidiary of Microchip Technology Inc. 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