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A2804 Dataheets PDF



Part Number A2804
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description ZERO VOLTAGE SWITCH
Datasheet A2804 DatasheetA2804 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD A2804 LINEAR INTEGRATED CIRCUIT 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.  FEATURES *Easy operation either through the AC line or a DC supply.

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UNISONIC TECHNOLOGIES CO., LTD A2804 LINEAR INTEGRATED CIRCUIT 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.  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 ■ ORDERING INFORMATION Ordering Number Lead Free Halogen Free A2804L-D08-T A2804G-D08-T A2804L-S08-R A2804G-S08-R Package DIP-8 SOP-8 DIP-8 SOP-8 Packing Tube Tape Reel  MARKING DIP-8 SOP-8 www.unisonic.com.tw Copyright © 2022 Unisonic Technologies Co., Ltd 1 of 4 QW-R121-004.H A2804  PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT  BLOCK DIAGRAM Vs GND Is 5 VOLTAGE LIMIT 7 VOLTAGE CONTROL G1 HALF WAVE DETECTOR AC VSYN ISYN INPUT RSYN 8 SYNCHRONOUS STAGE G2 G3 G4 S MEMORY VOUT PULSE GENERATOR LO 6 PULSE AMPLIFIER Q Q G5 COMPA + RATOR - 4 NON-INV. INPUT 3 INV. INPUT 2 COM OUTPUT REFERENCE VOLTAGE REF. 1 VOLTAGE OUTPUT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R121-004.H A2804 LINEAR INTEGRATED CIRCUIT  ABSOLUTE MAXIMUM RATINGS (TA=25℃, unless otherwise specified.) PARAMETER SYMBOL RATINGS UNIT Supply Voltage -Vs 8.2 V Input Voltage VIN ≤ IVSI V Supply Current Synchronous Current -Is ISYN 40 (AVERAGE) mA 5.0 (RMS) mA Power Dissipation Junction Temperature PD 350 mW TJ +125 C Operating Ambient Temperature Storage Temperature TOPR -20 ~ +70 C 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C, f=50/60Hz) PARAMETER Output Voltage Input Offset Voltage Supply Voltage 1 Supply Voltage 2 Common Mode Input Voltage 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. TEST CONDITIONS 6 IOUT≤150mA 3, 4 5 IS=2.5mA, RSYN=56K 5 IS=20mA, RSYN=56K 3, 4 1 IR≤1μA 5 RSYN=56K 8 6 ROUT≤25 6 3, 4 2 6 RSYN=56K MIN TYP MAX UNIT 4.2 5.2 7.0 V 2.0 ±5.0 mV 6.5 8.4 V 7.8 8.8 V 0 5.7 V 3.6 V 1.0 2.0 4.0 mA 0.3 mA 150 180 mA ±2.0 μA 0.5 ±1.0 μA ±0.2 μA 100 200 300 μs UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 4 QW-R121-004.H A2804  TYPICAL APPLICATIONS ON-OFF TEMPERATURE CONTROL 100μF NTC RH VR RH: HYSTERESIS VOLTAGE SET LINEAR INTEGRATED CIRCUIT AC 100V/rms 50/60Hz 1 8 2 7 Ro 56 UTC A2804 3 6 4 5 Rs 6.8K 2W Rsyn 56K TIME PROPORTIONAL TEMPERATURE CONTROL LOAD 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. UTC reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 4 QW-R121-004.H .


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