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 0.1F Cin 0.33F * 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 25C 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 RJC 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, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 40 -- V Ripple Rejection Ratio RR f = 120Hz 62 78 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 17 -- m Ios TJ = 25C -- 750 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -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, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TA =25C -- 45 -- V Ripple Rejection Ratio RR f = 120Hz, 9V Vin 19V 59 75 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 19 -- m Ios TJ = 25C -- 550 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -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, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 52 -- V Ripple Rejection Ratio RR f = 120Hz 56 72 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 16 -- m Ios TJ = 25C -- 450 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -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, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 52 -- V Ripple Rejection Ratio RR f = 120Hz,12V Vin 22V 55 72 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 16 -- m Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Ios TJ = 25C -- 450 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -1 -- mV/C Unit Electrical Characteristics - MC7810 Vin = 16V, Iout = 500mA, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 52 -- V Ripple Rejection Ratio RR f = 120Hz, 13V Vin 23V 54 72 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 16 -- m Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage www.vishay.com 4 mA Ios TJ = 25C -- 450 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -1 -- mV/C Document Number 74813 29-Nov-01 MC78xxCT Series Vishay Semiconductor Electrical Characteristics - MC7812 Vin = 19V, Iout = 500mA, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 75 -- V Ripple Rejection Ratio RR f = 120Hz,15V Vin 25V 55 71 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 18 -- m Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Ios TJ = 25C -- 350 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -1 -- mV/C Unit Electrical Characteristics - MC7815 Vin = 23V, Iout = 500mA, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 90 -- V Ripple Rejection Ratio RR f = 120Hz, 18V Vin 28V 54 70 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 19 -- m Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage Document Number 74813 29-Nov-01 mA Ios TJ = 25C -- 230 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -1 -- mV/C www.vishay.com 5 MC78xxCT Series Vishay Semiconductor Electrical Characteristics - MC7818 Vin = 27V, Iout = 500mA, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 110 -- mV Ripple Rejection Ratio RR f = 120Hz,21V Vin 31V 53 69 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 22 -- m Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage mA Ios TJ = 25C -- 200 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -1 -- mV/C Unit Electrical Characteristics - MC7824 Vin = 33V, Iout = 500mA, 0C TJ 125C, Cin = 0.33F, Cout = 0.1F; unless otherwise noted. Parameter Symbol Output Voltage Vout Line Regulation (TJ = 25C) REG line Load Regulation (TJ = 25C) REG load Quiescent Current Iq Conditions Min. Typ. Max. TJ = 25C 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 = 25C -- 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 f100KHz,TJ =25C -- 170 -- V Ripple Rejection Ratio Rrej f = 120Hz, 26V Vin 36V 50 66 -- dB Dropout Voltage Vdrop Iout = 1.0A, TJ = 25C -- 2 -- V Output Resistance Rout f = 1KHz -- 28 -- m Output Short Circuit Current Peak Output Current Temperature Coefficient of Output Voltage www.vishay.com 6 mA Ios TJ = 25C -- 150 -- mA Io peak TJ = 25C -- 1.5 -- A Vout/TJ Iout = 5mA,0C TJ 125C -- -1.5 -- mV/C Document Number 74813 29-Nov-01 MC78xxCT Series Vishay Semiconductor Ratings and Characteristic Curves (T A = 25C unless otherwise noted) Fig. 2 - Dropout Voltage vs. Junction Temperature Fig. 1 - Power Dissipation vs. Ambient Temperature (MC78xxCT) 20 HS = 5C/W 12 8.0 HS = 15C/W 4.0 Io = 1.0A VIN -- VOUT, Input - Output Voltage Differential (V) 16 Power Dissipation (W) 2.5 JC = 5C/W JA = 65C/W TJ (max) = 150C 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 = --40C 2.25 TJ = 0C 1.50 TJ = 25C TJ = 125C 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 (m) 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 = 25C 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 = 25C 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