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| UNISONIC TECHNOLOGIES CO., LTD A2804 ZERO VOLTAGE SWITCH DESCRIPTION The UTC A2804 is a TRIAC controller providing a complete solution for temperature controlled electric panel heaters, cookers, film processing baths etc. Switching occurs at the zero voltage point in order to minimize radio frequency interference. The device is suitable for mains-on-line operation and requires minimal components. SOP-8 LINEAR INTEGRATED CIRCUIT FEATURES *Easy operation either through the AC line or a DC supply. *Supply voltage control. *Very few external components. *Symmetrical burst control-No DC current components in the load circuit *Negative output current pulse up to 250mA-short circuit protection. *Reference voltage output DIP-8 *Pb-free plating product number: A2804L ORDERING INFORMATION Ordering Number Normal Lead Free Plating A2804-D08-T A2804L-D08-T A2804-S08-R A2804L-S08-R A2804-S08-T A2804L-S08-T Package DIP-8 SOP-8 SOP-8 Packing Tube Tape Reel Tube A2804L-D08-T (1)Packing Type (2)Package Type (3)Lead Plating (1) T: Tube, R: Tape Reel (2) D08: DIP-8, S08: SOP-8 (3) L: Lead Free Plating, Blank: Pb/Sn www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd 1 of 5 QW-R121-004,B A2804 PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT REF. VOLTAGE OUTPUT COM. OUTPUT INV. INPUT NON-INV. INPUT 1 2 3 4 8 7 6 5 AC INPUT GND VOUT VS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R121-004,B A2804 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT Vs Is 5 VOLTAGE LIMIT VOLTAGE CONTROL G1 COMP A RA TOR + - 4 3 NON-INV. INPUT INV. INPUT GND 7 G2 2 HALF WAVE DETECTOR G3 G4 COM OUTPUT S AC INPUT VSYN RSYN ISYN 8 SYNCHRONOUS STAGE MEMORY Q PULSE GENERATOR G5 Q REFERENCE VOLTAGE 1 REF. VOLTAGE OUTPUT VOUT LO 6 PULSE AMPLIFIER UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R121-004,B A2804 ABSOLUTE MAXIMUM RATINGS (Ta=25 ) LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT Supply Voltage -Vs 8.2 V Input Voltage VIN IVsI V Supply Current -Is 40(average) mA Synchronous Current ISYN 5.0(rms) mA Power Dissipation PD 350 mW Junction Temperature TJ 125 C Operating Ambient Temperature TOPR -20 ~ +70 C Storage Temperature TSTG -65 ~ +150 C Note Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (Vs=8.0V, VSYN=100 ~ 115Vrms, Ta=25 , f=50/60Hz) PARAMETER Output Voltage Input Offset Voltage Supply Voltage 1 Supply Voltage 2 Common Mode Input Voltage Range Reference Voltage Circuit Current Synchronous Current Output Current Output Leakage Current Input Bias Current Output Leakage Current Output Pulse Width SYMBOL VOUT VI(OFF) -Vs1 -Vs2 -VI(CM) -VR -Is ISYN IOUT ILO II(BIAS) ILC TPULSE PIN NO. 6 3, 4 5 5 3, 4 1 5 8 6 6 3, 4 2 6 TEST CONDITIONS IOUT200mA Is=2.5mA, RSYN=56K Is=20mA, RSYN=56K IR1A RSYN=56K ROUT25 0.3 200 MIN 4.2 7.2 7.2 0 3.6 2.0 250 0.5 RSYN=56K 200 TYP 5.2 2.0 MAX UNIT V 5.0 mV 8.4 V 8.6 V 5.7 V V 2.5 mA mA mA 2.0 A 1.0 A 0.2 A s UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R121-004,B A2804 TYPICAL APPLICATIONS ON-OFF TEMPERATURE CONTROL LINEAR INTEGRATED CIRCUIT AC 100V/rms 50/60Hz 1 NTC 100 F RH 3 4 2 UTC A2804 6 5 LOAD Rs 6.8K 2W Rsyn 56K 8 7 Ro 56 VR RH: HYSTERESIS VOLTAGE SET TIME PROPORTIONAL TEMPERATURE CONTROL AC 100V/rms 50/60Hz 1 + 100 F + NTC 2 UTC A2804 3 CT 0.1 4 20 VR 5 LOAD Rs 6.8K 2W Rsyn 56K 6 PUT N13TL 8 7 Ro 56 RT 39K RT CT:TIMING PERIOD SET UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R121-004,B |
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