液晶电视维修资料

CYStech Electronics Corp. Spec. No. : C511J3 Issued Date : 2003.03.25 Revised Date :2005.09.15 Page No. : 1/3 LM78D05XJ3 CYStek Product Specification Three Terminal Positive Voltage Regulators LM78D05XJ3 These voltage regulators are monolithic integrated circuits designed as fixed voltage regulators for a wide variety of applications including local, on-card regulation. These regulators employ internal current limiting, thermal shutdown, and safe-area compensation. With adequate heatsinking they can deliver output currents in excess of 1.0A. Although designed primarily as fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents. Maximum Ratings Rating Symbol Value Unit Input Voltage VIN 35 V Output Current Io 1 A Power Dissipation PD 15 W Operating Junction Temperature Range TJ 0 to +125 ℃ Ordering Information Device Output Voltage Tolerance Package LM78D05AJ3 3% TO-252 LM78D05BJ3 5% TO-252 TO-252 CYStech Electronics Corp. Spec. No. : C511J3 Issued Date : 2003.03.25 Revised Date :2005.09.15 Page No. : 2/3 LM78D05XJ3 CYStek Product Specification Electrical Characteristics VIN=10V,IOUT=500mA,TJ=25℃,CIN=0.33µF,COUT=0.1µF, unless otherwise specified Characteristics Symbol Test Condition Min Typ Max Unit Output Voltage LM78D05A LM78D05B Vo 4.85 4.75 5.0 5.0 5.15 5.25 V Output Voltage LM78D05A LM78D05B Vo 5.0mA≤IOUT≤1.0A,PD≤15W 4.85 4.75 5.0 5.0 5.15 5.25 V Line Regulation ΔVo 7V≤VIN≤25V 8V≤VIN≤25V - - - - 50 25 mV Load Regulation ΔVo 5.0mA≤IOUT≤1.5A 250mA≤IOUT≤750mA - - - - 100 50 mV Quiescent Current IQ IOUT≤1.0A - - 8 mA Quiescent Current Change ΔIQ 5.0mA≤IOUT≤1.5A 7V≤VIN≤25V - - - - 0.5 1.3 mA Dropout Voltage VD IOUT=1.0A - 2 - V Peak Output Current IPK 1.7 - - A CYStech Electronics Corp. Spec. No. : C511J3 Issued Date : 2003.03.25 Revised Date :2005.09.15 Page No. : 3/3 LM78D05XJ3 CYStek Product Specification TO-252 Dimension *: Typical Inches Millimeters Inches Millimeters DIM Min. Max. Min. Max. DIM Min. Max. Min. Max. A 0.0177 0.0217 0.45 0.55 G 0.0866 0.1102 2.20 2.80 B 0.0650 0.0768 1.65 1.95 H - *0.0906 - *2.30 C 0.0354 0.0591 0.90 1.50 I - 0.0354 - 0.90 D 0.0177 0.0236 0.45 0.60 J - 0.0315 - 0.80 E 0.2520 0.2677 6.40 6.80 K 0.2047 0.2165 5.20 5.50 F 0.2125 0.2283 5.40 5.80 L 0.0551 0.0630 1.40 1.60 Notes: 1.Controlling dimension: millimeters. 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material: • Lead: 42 Alloy; solder plating • Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 Important Notice: • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. • CYStek reserves the right to make changes to its products without notice. • CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. • CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. B A C E H I J K 3 2 1 D F GL Style: Pin 1.Vin 2.Ground 3.Vout 3-Lead TO-252 Plastic Surface Mount Package CYStek Package Code: J3 Marking: 78D05