RE46C104

R&E International RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification General Description 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. Features • • • • Low Quiescent Current Low Driver Ron Wide Operating Voltage Range Available in Standard Packaging or RoHS Compliant Pb Free Packaging Pin Configuration N/C FEED CAPVss CAP+ HRNEN N/C Applications Smoke detectors CO Detectors Personal Security Products Electronic Toys 1 14 N/C Vdd CPMPEN HORNS HORNB 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 Telephone 610.992.0727 Page 1 of 4 Facsimile 610.992.0734 This datasheet contains PROPRIETARY information. E-mail: rande@randeint.com DS-RE46C104-011507 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International Electrical Characteristics at TA = 25°C, VDD = 5V, Vss = 0V (unless otherwise noted). Parameter Supply Voltage Standby Supply Current Vdd Test Pin Vdd Vdd Test Conditions Operating Hrnen, Cpmpen = Vss Feed = Vss ; Vdd = 5V Hrnen, Cpmpen = Vss Feed = Vss ; Vdd = 8V Min 4.0 Limits Typ Max 5.0 100 8.0 500 Units V nA 500 nA Supply Current Vdd Hrnen = Vss Cpmpen = Vdd No Loads; See note 1 200 500 uA Input Leakage Hrnen & Cpmpen FEED Vin = Vdd or Vss Feed = +22V Cpmpen = Vdd -100 20 100 50 nA uA FEED Feed = -10V Cpmpen = Vdd -50 -15 uA Input Voltage Low Input Voltage High Output Low Voltage Output High Voltage Vpos Output Voltage Hrnen & Cpmpen Hrnen & Cpmpen Horns or Hornb Horns or Hornb Vpos 1.0 2.3 Iout = 16mA Cpmpen = Vdd Iout = -16mA Cpmpen = Vdd Iout = -16mA Cpmpen = Vdd Hrnen = Vss 0.3 8.5 8.7 8.9 0.5 V V V V V Charge Pump Oscillator Freq Charge Pump Power Efficiency Charge Pump Voltage Conversion Efficiency Vpos 16 kHz Vpos Iout = -16mA C1=C2=10uF No Loads C1=C2=10uF 95 85 % Vpos 99 % Telephone 610.992.0727 Page 2 of 4 Facsimile 610.992.0734 This datasheet contains PROPRIETARY information. E-mail: rande@randeint.com DS-RE46C104-011507 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International Typical Application Charge Pump Enable Active High +5V 1 N/C 2 FEED 3 CAP4 C1 5 Horn Enable Active High Note: C1 = 10uF C2 = 10uF C3 = 1nF R1 = 1.5Mohm R2 = 200kohm 6 7 CAP+ HRNEN N/C HORNB VPOS N/C C2 C3 R1 R2 VSS HORNS 10 9 8 Piezo CPMPEN 11 VDD 12 N/C 13 14 RE46C104 Telephone 610.992.0727 Page 3 of 4 Facsimile 610.992.0734 This datasheet contains PROPRIETARY information. E-mail: rande@randeint.com DS-RE46C104-011507 RE46C104 Piezoelectric Horn Driver and Voltage Converter Product Specification R&E International Functional Block Diagram VDD 13 VSS 4 VDD Substrate Logic 5 9 VPOS CAP+ CAP- 3 Level Shifters CPMPEN 12 Oscillator and Logic VPOS 10 HORNB HRNEN 6 Level Shifter 11 HORNS FEED 2 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. Telephone 610.992.0727 Page 4 of 4 Facsimile 610.992.0734 This datasheet contains PROPRIETARY information. E-mail: rande@randeint.com DS-RE46C104-011507