RE46C100D8F

RE46C100 Piezoelectric Horn Driver Circuit Features: • • • • Package Types Low Quiescent Current (< 100 nA) Low Driver RON – 20typical at 9V Wide Operating Voltage Range Available in 8-pin DFN, PDIP and SOIC packages General Description: The RE46C100 devices are intended for applications using a self oscillating piezoelectric horn, although it can be used in direct drive applications. Feedback control and a driver circuit are provided, as well as a horn enable function. The RE46C100 is intended for use in smoke detectors, CO detectors, personal security products and electronic toys. RE46C100 PDIP, SOIC NC VDD NC FEED 8 7 6 5 1 2 3 4 HRNEN HORNS HORNB VSS RE46C100 2x3 DFN* NC 1 VDD 2 NC 3 FEED 4 8 HRNEN 7 HORNS EP 9 6 HORNB 5 VSS * Includes Exposed Thermal Pad (EP); see Table 2-1. Functional Block Diagram 4 FEED HRNEN 8 VDD 2 VSS 5  2009-2014 Microchip Technology Inc. 7 HORNS 6 HORNB DS20002166B-page 1 RE46C100 Typical Application Horn Enable Active High 1 8 2 7 + 9V Battery - C2(1) 1 µF RE46C100 3 6 4 5 R3 R4 C1 1.5 MΩ 220 kΩ 0.001 µF Note 1: Place C2 close to the device power pins to minimize horn switching noise. DS20002166B-page 2  2009-2014 Microchip Technology Inc. RE46C100 1.0 † Notice: Stresses above those listed under “Maximum ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† Supply Voltage.............................................................. VDD = 18V Input Voltage Range Except FEED, TEST....... VIN = -0.3V to VDD + 0.3V FEED Input Voltage Range ........................... VINFD =-10 to +22V Input Current except FEED ......................................... IIN = 10 mA Operating Temperature......................................TA = -40 to +85°C Storage Temperature ...................................TSTG = -55 to +125°C Maximum Junction Temperature ............................... TJ = +150°C DC ELECTRICAL CHARACTERISTICS DC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = +25°C, VDD = 9V, Typical Application. Symbol Test Pin Supply Voltage VDD 2 6 9 16 V Operating Supply Current IDD1 2 — — 100 nA HRNEN = 0V, FEED = 0V Input Voltage Low VIL1 8 — — 1 V Input Voltage High VIH1 8 2.3 — — V Parameter Input Leakage Low Input Leakage High Output Voltage Low Output Voltage High Min. Typ. Max. Units Conditions IIL1 8 — — -100 nA VIN = VSS ILFD 4 — — -50 µA FEED = -10V IIH1 8 — — 100 nA VIN = VDD IHFD 4 — — 50 µA FEED = 22V VOL1 6, 7 — 0.3 0.5 V IOL = 16 mA VOL2 6, 7 — — 0.9 V IOL = 16 mA, VDD = 7.2V VOH1 6, 7 8.5 8.7 — V IOH= -16 mA VOH2 6, 7 6.3 — — V IOH = -16 mA, VDD = 7.2V TEMPERATURE SPECIFICATIONS Electrical Specifications: Unless otherwise indicated, all parameters apply at TA = +25°C, VDD = 9V, Typical Application. Parameters Sym. Min. Typ. Max. Units Conditions Temperature Ranges Operating Temperature Range TA -40 — +85 °C TSTG -55 — +125 °C Thermal Resistance, 8L 2x3 DFN θJA — 75 — °C/W Thermal Resistance, 8L-PDIP θJA — 89.3 — °C/W Thermal Resistance, 8L-SOIC θJA — 149.5 — °C/W Storage Temperature Range Thermal Package Resistances  2009-2014 Microchip Technology Inc. DS20002166B-page 3 RE46C100 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE RE46C100 RE46C100 PDIP, SOIC DFN Symbol Description 1 1 NC No connection 2 2 VDD Connect to the positive supply voltage 3 3 NC No connection 4 4 FEED 5 5 VSS 6 6 HORNB This pin is connected to the metal electrode of a piezoelectric transducer. 7 7 HORNS This pin is a complementary output to HORNB, connected to the ceramic electrode of the piezoelectric transducer. 8 8 HRNEN This pin enables the horn with a logic high. — 9 DS20002166B-page 4 EP Usually connected to the feedback electrode through a current-limiting resistor. If not used, this pin must be connected to VDD or VSS. Connect to the negative supply voltage Exposed thermal pad. This pad should be connected to VSS.  2009-2014 Microchip Technology Inc. RE46C100 3.0 DEVICE DESCRIPTION The RE46C100 horn driver provides the circuitry necessary to drive a three-terminal self-oscillating piezoelectric horn. It can also drive a two-terminal piezoelectric horn with the FEED pin used as a signal input. The horn driver provides a push-pull circuit to drive the horn, as shown in the Typical Application circuit. In a self-oscillating application, the FEED pin is connected to the feedback pin of the piezoelectric horn through a resistor. To drive a two-terminal piezoelectric horn with an external signal, the FEED pin should be used as the external signal input. The horn is enabled when HRNEN is driven to a logic high and is silenced when HRNEN is driven to a logic low. The horn output can be modulated using the HRNEN input.  2009-2014 Microchip Technology Inc. DS20002166B-page 5 RE46C100 4.0 PACKAGING INFORMATION 4.1 Package Marking Information 8-Lead DFN (2x3x0.9 mm) Example ADG 420 25 8-Lead PDIP (300 mil) XXXXXXXX XXXXXNNN YYWW 8-Lead SOIC (3.90 mm) NNN Legend: XX...X Y YY WW NNN e3 * Note: DS20002166B-page 6 Example RE46C100 I/P^^^256 e3 1420 Example 46C100I SN^^^1420 e3 256 Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information.  2009-2014 Microchip Technology Inc. RE46C100       !""#$%& ' 3&'!&"&+ #* !(!!&+  %&&#& &&244***''4+  e D b N N L K E2 E EXPOSED PAD NOTE 1 NOTE 1 2 1 2 1 D2 BOTTOM VIEW TOP VIEW A A3 A1 NOTE 2 5&! '!6'&! 7"')%! 66--  7 7 78 9 : &  8 ; &  :   &#%%    / 1&&+!! ,  -3 8 6 &  01 8