MC78xxCT Series New Product Vishay Semiconductor 3-Terminal Fixed Positive Voltage Regulators MC78xxCT TO-220AB 1 2 Description Pin Definition 1. Input 2. Ground 3. Output (Heatsink/ tab connected to pin 2) 3 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 the MC78xxCT can deliver output currents in excess of 1.5 ampere. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages with currents. Standard Application Input Output MC78xx Features • Output current in excess of 1.0 ampere Co 0.1µF Cin 0.33µF • No external components required • Internal thermal overload protection • Internal short-circuit current limiting • Output transistor safe-area compensation Notes: A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voltage. • Output voltage offered in 2% tolerance Mechanical Data Case: TO-220 Package xx = these two digits of the part number indicate output voltage. Cin is required if regulator is located an appreciable distance from power supply filter. Case outline is on the back page. Co is not needed for stability, however, it does improve transient response. Internal Block Diagram Input Series Pass Element 1 Current Generator Starting Circuit Reference Voltage Output 3 SOA Protection Error Amplifier Thermal Protection GND 2 Document Number 74813 29-Nov-01 www.vishay.com 1 MC78xxCT Series Vishay Semiconductor Maximum Ratings Ratings at 25°C ambient temperature unless otherwise specified. Parameter Input Voltage (1) Input Voltage (2) (3) Thermal Resistance Operating Junction Temperature Range Storage Junction Temperature Range Symbol Value Unit Vin 30 V Vin 40 V RθJC 5 °C/W TJ –20 to +150 °C Tstg –65 to +150 °C Notes: (1) MC7805 to MC7818 (2) MC7824 (3) Follow the derating curve (fig. 1) Electrical Characteristics – MC7805 Vin = 10V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 4.90 5 5.10 7V ≤ Vin ≤ 20V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 4.85 — 5.15 7V ≤ Vin < 25V – 3 100 8V ≤ Vin < 13V – 1 50 10mA ≤ Iout < 1.5A – 15 100 250mA ≤ Iout < 750mA – 5 50 Iout = 0, TJ = 25°C — 4.2 8 7V ≤ Vin ≤ 25V — — 1.3 5mA ≤ Iout ≤ 1.0A — — 0.5 Unit V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 40 — µV Ripple Rejection Ratio RR f = 120Hz 62 78 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 17 — mΩ Ios TJ = 25°C — 750 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1.1 — mV/°C Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage www.vishay.com 2 mA Document Number 74813 29-Nov-01 MC78xxCT Series Vishay Semiconductor Electrical Characteristics – MC7806 Vin = 11V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 5.88 6.0 6.12 8V ≤ Vin ≤ 21V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 5.83 — 6.17 8V ≤ Vin < 25V – 5 120 9V ≤ Vin < 13V – 1.5 60 10mA ≤ Iout < 1.5A – 14 120 250mA ≤ Iout < 750mA – 4 60 Iout = 0, TJ = 25°C — 4.3 8.0 8V ≤ Vin ≤ 25V — — 1.3 5mA ≤ Iout ≤ 1.0A — — 0.5 Unit V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TA =25°C — 45 — µV Ripple Rejection Ratio RR f = 120Hz, 9V ≤ Vin ≤ 19V 59 75 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 19 — mΩ Ios TJ = 25°C — 550 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –0.8 — mV/°C Unit Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Electrical Characteristics – MC7808 Vin = 14V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 7.84 8.0 8.16 10.5V ≤ Vin ≤ 23V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 7.74 — 8.26 10.5V ≤ Vin < 25V – 6 160 11V ≤ Vin < 15V – 2 80 10mA ≤ Iout < 1.5A – 12 160 250mA ≤ Iout < 750mA – 4 80 Iout = 0, TJ = 25°C — 4.3 8.0 10.5V ≤ Vin ≤ 25V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 52 — µV Ripple Rejection Ratio RR f = 120Hz 56 72 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 16 — mΩ Ios TJ = 25°C — 450 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –0.8 — mV/°C Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage Document Number 74813 29-Nov-01 mA www.vishay.com 3 MC78xxCT Series Vishay Semiconductor Electrical Characteristics – MC7809 Vin = 15V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 8.82 9 9.18 11.5V ≤ Vin ≤ 24V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 8.77 — 9.23 11.5V ≤ Vin < 27V – 6 160 12V ≤ Vin < 16V – 2 80 5mA ≤ Iout < 1.5A – 12 160 250mA ≤ Iout < 750mA – 4 80 Iout = 0, TJ = 25°C — 4.3 8 11.5V ≤ Vin ≤ 27V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 Unit V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 52 — µV Ripple Rejection Ratio RR f = 120Hz,12V ≤ Vin ≤ 22V 55 72 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 16 — mΩ Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Ios TJ = 25°C — 450 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1 — mV/°C Unit Electrical Characteristics – MC7810 Vin = 16V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 9.8 10 10.2 12.5V ≤ Vin ≤ 25V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 9.75 — 10.25 12.5V ≤ Vin < 28V – 10 240 13V ≤ Vin < 17V – 3 120 10mA ≤ Iout < 1.5A – 12 240 250mA ≤ Iout < 750mA – 4 120 Iout = 0, TJ = 25°C — 4.3 8 12.5V ≤ Vin ≤ 28V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 52 — µV Ripple Rejection Ratio RR f = 120Hz, 13V ≤ Vin ≤ 23V 54 72 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 16 — mΩ Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage www.vishay.com 4 mA Ios TJ = 25°C — 450 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1 — mV/°C Document Number 74813 29-Nov-01 MC78xxCT Series Vishay Semiconductor Electrical Characteristics – MC7812 Vin = 19V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 11.76 12.0 12.24 14.5V ≤ Vin ≤ 27V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 11.66 — 12.34 14V ≤ Vin < 30V – 10 240 15V ≤ Vin < 19V – 3 120 10mA ≤ Iout < 1.5A – 12 240 250mA ≤ Iout < 750mA – 4 120 Iout = 0, TJ = 25°C — 4.3 8 14.5V ≤ Vin ≤ 30V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 Unit V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 75 — µV Ripple Rejection Ratio RR f = 120Hz,15V ≤ Vin ≤ 25V 55 71 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 18 — mΩ Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Ios TJ = 25°C — 350 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1 — mV/°C Unit Electrical Characteristics – MC7815 Vin = 23V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 14.7 15.0 15.3 17.5V ≤ Vin ≤ 30V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 14.55 — 15.45 17.5V ≤ Vin < 30V – 11 300 13V ≤ Vin < 17V – 3 150 10mA ≤ Iout < 1.5A – 12 300 250mA ≤ Iout < 750mA – 4 150 Iout = 0, TJ = 25°C — 4.4 8 17.5V ≤ Vin ≤ 30V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 90 — µV Ripple Rejection Ratio RR f = 120Hz, 18V ≤ Vin ≤ 28V 54 70 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 19 — mΩ Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage Document Number 74813 29-Nov-01 mA Ios TJ = 25°C — 230 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1 — mV/°C www.vishay.com 5 MC78xxCT Series Vishay Semiconductor Electrical Characteristics – MC7818 Vin = 27V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 17.64 18.0 18.36 21V ≤ Vin ≤ 33V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 17.44 — 18.56 21V ≤ Vin < 33V – 15 360 22V ≤ Vin < 26V – 5 180 10mA ≤ Iout < 1.5A – 12 360 250mA ≤ Iout < 750mA – 4 180 Iout = 0, TJ = 25°C — 4.5 8 21V ≤ Vin ≤ 33V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 Unit V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 110 — mV Ripple Rejection Ratio RR f = 120Hz,21V ≤ Vin ≤ 31V 53 69 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 22 — mΩ Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Ios TJ = 25°C — 200 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1 — mV/°C Unit Electrical Characteristics – MC7824 Vin = 33V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25°C) ∆REG line Load Regulation (TJ = 25°C) ∆REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25°C 23.52 24.0 24.48 26V ≤ Vin ≤ 38V, 5mA ≤ Iout ≤ 1.0A, PD ≤ 15W 23.32 — 24.68 26V ≤ Vin < 38V – 18 480 27V ≤ Vin < 32V – 6 240 10mA ≤ Iout < 1.5A – 12 480 250mA ≤ Iout < 750mA – 4 240 Iout = 0, TJ = 25°C — 4.6 8 26V ≤ Vin ≤ 38V — — 1 5mA ≤ Iout ≤ 1.0A — — 0.5 V mV mV mA Quiescent Current Change ∆Iq Output Noise Voltage Vn 10Hz≤ f≤100KHz,TJ =25°C — 170 — µV Ripple Rejection Ratio Rrej f = 120Hz, 26V ≤ Vin ≤ 36V 50 66 — dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25°C — 2 — V Output Resistance Rout f = 1KHz — 28 — mΩ Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage www.vishay.com 6 mA Ios TJ = 25°C — 150 — mA Io peak TJ = 25°C — 1.5 — A ∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C — –1.5 — mV/°C Document Number 74813 29-Nov-01 MC78xxCT Series Vishay Semiconductor Ratings and Characteristic Curves (T A = 25°C unless otherwise noted) Fig. 2 – Dropout Voltage vs. Junction Temperature Fig. 1 – Power Dissipation vs. Ambient Temperature (MC78xxCT) 20 θHS = 5°C/W 12 8.0 θHS = 15°C/W 4.0 Io = 1.0A VIN -- VOUT, Input - Output Voltage Differential (V) 16 Power Dissipation (W) 2.5 θJC = 5°C/W θJA = 65°C/W TJ (max) = 150°C No Heatsink 2.0 Io = 500mA 1.5 Io = 200mA Io = 20mA 1.0 Io = 0mA 0.5 0 0 25 50 75 100 125 0 150 25 50 75 100 125 Ambient Temperatue (°C) Fig. 4 –Ripple Rejection Ratio vs. Output Voltage Fig. 3 – Peak Output Current 80 RR -- Ripple Rejection (db) Io -- Output Current (A) 3.00 TJ = --40°C 2.25 TJ = 0°C 1.50 TJ = 25°C TJ = 125°C 0.75 0 f = 120Hz Io = 20mA ˘Vin = 1.0V (RMS) 70 60 50 40 0 6.0 12 18 24 Part # / Vin 7805 / 10V 7806 / 11V 7808 / 14V 7812 / 19V 7815 / 23V 7818 / 27V 7824 / 33V 4.0 30 6.0 8.0 10 12 14 16 18 20 Input -- Output Voltage Differential (V) Vo -- Output Voltage (V) Fig. 5 – Output Impedance (mΩ) vs. Output Voltage Fig. 6 – Output Voltage vs. Junction Temperature 1000 22 24 6.20 Vo -- Output Voltage (V) f = 120Hz Io = 500mA CL = OuF 100 10 4.0 8.0 12 16 Vo -- Output Voltage (V) Document Number 74813 29-Nov-01 20 24 Vin = 10V Vo = 6.0V Io = 20mA 6.10 6.00 5.90 5.80 --75 --50 --25 0 25 50 100 125 150 175 200 TJ -- Junction Temperature (°C) www.vishay.com 7 MC78xxCT Series Vishay Semiconductor Ratings and Characteristic Curves (T A = 25°C unless otherwise noted) Fig. 8 – Output Voltage vs. Input Voltage Fig. 7 – Quiescent Current vs. Junction Temperature 8.0 IB -- Quiescent Current (mA) MC78xxC 4.0 Vin = 10V Vo = 5.0V Io = 20mA MC7805 TJ = 25°C VO -- Output Voltage (V) 5.0 MC78xx 3.0 Vin = 10V Vo = 5.0V Io = 5.0mA 2.0 1.0 0 --75 6.0 Io = 10mA 4.0 Io = 1.0A 2.0 Io = 500mA 0 --50 --25 0 25 50 75 TJ -- Junction Temperature (°C) www.vishay.com 8 100 125 0 2.0 4.0 6.0 8.0 10 12 14 16 VI -- Input Voltage (V) Document Number 74813 29-Nov-01 MC78xxCT Series Vishay Semiconductor TO-220 Case Outline 4.85 ± 0.375 10.25 ± 0.25 3.84 ± 0.6 Dia. 1.27 ± 0.12 2.69 ± 0.25 6.26 ± 0.25 14.8 ± 0.51 8.54 ± 0.26 28.7 ± 0.92 3.94 ± 0.375 13.9 ± 0.41 2.53 ± 0.185 1.3 ± 0.185 0.387 ± 0.09 0.8 ± 0.12 2.55 ± 0.375 Dimensions in millimeters Document Number 74813 29-Nov-01 www.vishay.com 9