Spec. No. : C520A3 Issued Date : 2003.03.27 Revised Date :2006.05.29 CYStech Electronics Corp. Page No. : 1/4 Three Terminal Medium Current Positive Voltage Regulators TO-92 LM78M05XA3 Description These regulators employ internal current-limiting and thermal-shutdown, making them essentially indestructible. They can deliver up to 500mA output current, if the case temperature can be kept at Tc=25°C. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used with power pass elements to make high-current voltage regulators. The LM78M05XA3 used as a Zener diode/resistor combination replacement, offers an effective output impedance improvement of typically two orders of magnitude, along with lower quiescent current and lower noise. Absolute Maximum Ratings (Ta=25°C) • Input Voltage………………………………………………………………………………………………. 30 V • Total Power Dissipation……………………………………………………………………. Internally limited • Operating Temperature Range……………………………………………………………. 0 °C to +125 °C • Maximum Junction Temperature………………………………………………………………………125 °C • Storage Temperature Range………………………………………………………………-55 °C to +150 °C • Lead Temperature (Soldering 10S)……………………………….. ……………………………...260 °C Typical Application Schematic Diagram Vin Vin Vout 5k LM78M05 5.7kΩ 100 C1 C2 1.5kΩ 1.9kΩ 100 576Ω Vout 5p 3.41kΩ 13kΩ 3.89kΩ 2.23kΩ 7.8kΩ Note: C1 and C2 are required if regulator is located far from power supply filter and load, or oscillation may induced on the loop. LM78M05XA3 2.84kΩ Gnd CYStek Product Specification CYStech Electronics Corp. Spec. No. : C520A3 Issued Date : 2003.03.27 Revised Date :2006.05.29 Page No. : 2/4 Ordering Information Device LM78M05AA3 LM78M05BA3 LM78M05CA3 Output Voltage Range 4.8V〜4.9V 4.9V〜5.1V 5.1V〜5.2V Electrical Characteristics Vin=10V, Iout=350mA, PD≤5W,0°C≤Tj≤125°C, Cin=0.33uF, Cout=0.1uF (unless otherwise noted) Symbol Parameter Vo Output Voltage ∆Vo Line Regulation ∆Vo Load Regulation IQ Vn Quiescent Current Quiescent Current Change Output Noise Voltage RR Ripple Rejection VD Dropout Voltage Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage ∆IQ IOS IMAX TCVo LM78M05XA3 Conditions Tj=25°C 5mA≤Io≤350mA and 7V≤Vin≤20V Tj=25°C, 7V≤Vin≤25V Tj=25°C, 8V≤Vin≤25V Tj=25°C, 5mA≤Io≤500mA Tj=25°C, 5mA≤Io≤200mA Tj=25°C 5mA≤Io≤350mA 8V≤Vin≤25V,Io=200mA Ta=25°C, 10Hz≤f≤10KHz 8V≤Vin≤18V,Io=300mA, f=120Hz Tj=25°C,Io=500mA LM78M05A Min Typ Max 4.80 4.90 Units V 4.75 - 5.25 - 3 15 3.2 40 100 50 100 50 6 0.5 0.8 100 62 78 - dB - 2 - V mV mV mA mA uV Tj=25℃,Vin=30V 300 mA Tj=25℃ 700 mA Io=5mA -1.1 mV/℃ CYStek Product Specification CYStech Electronics Corp. Spec. No. : C520A3 Issued Date : 2003.03.27 Revised Date :2006.05.29 Page No. : 3/4 Symbol Parameter Vo Output Voltage ∆Vo Line Regulation ∆Vo Load Regulation IQ Vn Quiescent Current Quiescent Current Change Output Noise Voltage RR Ripple Rejection VD Dropout Voltage Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage ∆IQ IOS IMAX TCVo Symbol Output Voltage ∆Vo Line Regulation ∆Vo Load Regulation Vn Quiescent Current Quiescent Current Change Output Noise Voltage RR Ripple Rejection VD Dropout Voltage Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage ∆IQ IOS IMAX TCVo LM78M05XA3 Tj=25°C 5mA≤Io≤350mA and 7V≤Vin≤20V Tj=25°C, 7V≤Vin≤25V Tj=25°C, 8V≤Vin≤25V Tj=25°C, 5mA≤Io≤500mA Tj=25°C, 5mA≤Io≤200mA Tj=25°C 5mA≤Io≤350mA 8V≤Vin≤25V,Io=200mA Ta=25°C, 10Hz≤f≤10KHz 8V≤Vin≤18V,Io=300mA, f=120Hz Tj=25°C,Io=500mA LM78M05B Min Typ Max 4.90 5.00 5.1 Units V 4.75 - 5.25 - 3 15 3.2 40 100 50 100 50 6 0.5 0.8 100 62 78 - dB - 2 - V mV mV mA mA uV Tj=25℃,Vin=30V 300 mA Tj=25℃ 700 mA Io=5mA -1.1 mV/℃ Parameter Vo IQ Conditions Conditions Tj=25°C 5mA≤Io≤350mA and 7V≤Vin≤20V Tj=25°C, 7V≤Vin≤25V Tj=25°C, 8V≤Vin≤25V Tj=25°C, 5mA≤Io≤500mA Tj=25°C, 5mA≤Io≤200mA Tj=25°C 5mA≤Io≤350mA 8V≤Vin≤25V,Io=200mA Ta=25°C, 10Hz≤f≤10KHz 8V≤Vin≤18V,Io=300mA, f=120Hz Tj=25°C,Io=500mA LM78M05C Min Typ Max 5.10 5.2 Units V 5.05 - 5.25 - 3 15 3.2 40 100 50 100 50 6 0.5 0.8 100 62 78 - dB - 2 - V mV mV mA mA uV Tj=25℃,Vin=30V 300 mA Tj=25℃ 700 mA Io=5mA -1.1 mV/℃ CYStek Product Specification Spec. No. : C520A3 Issued Date : 2003.03.27 Revised Date :2006.05.29 CYStech Electronics Corp. Page No. : 4/4 TO-92 Dimension α2 A B 1 2 3 78M05 α3 C D H I G α1 Style: Pin 1.Vout 2.GND 3.Vin E F 3-Lead TO-92 Plastic Package CYStek Package Code: A3 *: Typical Inches Min. Max. 0.1704 0.1902 0.1704 0.1902 0.5000 0.0142 0.0220 *0.0500 0.1323 0.1480 DIM A B C D E F Millimeters Min. Max. 4.33 4.83 4.33 4.83 12.70 0.36 0.56 *1.27 3.36 3.76 DIM G H I α1 α2 α3 Inches Min. Max. 0.0142 0.0220 *0.1000 *0.0500 *5° *2° *2° Millimeters Min. Max. 0.36 0.56 *2.54 *1.27 *5° *2° *2° 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. LM78M05XA3 CYStek Product Specification