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| UNISONIC TECHNOLOGIES CO., LTD T78040 VERTICAL DEFLECTION OUTPUT CIRCUIT DESCRIPTION The UTC T78041 is a monolithic integrated circuit and designed for use in high-definition TV and CRT monitors. It is intended to directly drive the deflection coil. Besides, the T78040 offers a maximum deflection current of 1.8A peak to peak to suitable for small to medium diameter CRTs. LINEAR INTEGRATED CIRCUIT TO-220Z7 FEATURES * Deflection current can be 1.8A peak value * Deflection voltage up to 70V * Flyback generator * Thermal protection circuit * Low cross-over distortion * Supports DC Coupling *Pb-free plating product number: T78040L ORDERING INFORMATION Order Number Normal Lead Free Plating T78040-TB7-T T78040L-TB7-T Package TO-220Z7 Packing Tube T78040L-TB7-T (1)Packing Type (2)Package Type (3)Lead Plating (1) T: Tube (2) TB7: TO-220Z7 (3) Lead Free Plating, Blank: Pb/Sn www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd 1 of 5 QW-R121-013,A T78040 PIN CONFIGURATIONS 7 6 5 4 3 2 1 LINEAR INTEGRATED CIRCUIT Non-Inverting input Output stage supply Output Ground Flyback generator Supply voltage Inverting input Tab connected to Pin 4 BLOCK DIAGRAM 2 6 3 Flyback Generator + Power Amplifier Drive Stage Output Stage 7 5 1 Thermal Protection 4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R121-013,A T78040 ABSOLUTE MAXIMUM RATINGS (Ta= 25 ) LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT Supply Voltage (pin 2 to Pin4) Vcc2 34 V Output Peak Power Supply Voltage (Pin 5 to Pin 4) Vcc6 70 V Output Peak Current I5MAX -1.5 ~ +1.5 A Power Dissipation PD 9 W Junction Temperature TJ 150 Operating Temperature TOPR -20 ~ +85 Storage Temperature TSTG -40 ~ +150 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. THERAML DATA PARAMETER Thermal Resistance Junction-Case SYMBOL JC RATINGS 4.0 UNIT C/W ELECTRICAL CHARACTERISTICS (Ta = 25 , VCC = 24V, unless otherwise specified) PARAMETER Supply Voltage Output Saturated Voltage to GND Output Saturated Voltage to Supply Saturation Voltage on Pin 3 Saturation Voltage to Pin 3 (2nd part of flyback) Output Middle Point Voltage Quiescent Current Recommend Biggest Deflect Current SYMBOL VCC VS5-4 VS5-6 VS3-4 VS3-2 VO(MID) IQ I5P-P TEST CONDITIONS I5=0.9A I5=-0.9A I3 = 20mA I3 = -0.9A 11 35 12 MIN 16 TYP 24 MAX 33 1.3 3.2 1.8 3.0 13 65 1.8 UNIT V V V V V V mA A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R121-013,A T78040 APPLICATION CIRCUITS For AC Coupling (Single Power Supply) +VCC LINEAR INTEGRATED CIRCUIT CF 2 6 3 Flyback Generator 7 1 + 300 - R1 VREF 2.2V + R2 CS R4 4 Thermal Protection 0.47 Power Amplifier Drive Stage Output Stage 5 Deflection Coil 0.22 F R3 CL R5 For DC Coupling (Dual Power Supply) +VCC CF 2 6 3 Flyback Generator 7 1 + Power Amplifier R3 VREF+ Field the position adjust -VEE 4 Thermal Protection 0.47 300 - Drive Stage Output Stage 5 Deflection Coil 0.22 F R5 VREF- CS R4 CL R2 R1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R121-013,A T78040 LINEAR INTEGRATED CIRCUIT 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-R121-013,A |
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