www.fairchildsemi.com MC78MXX/LM78MXX 3-Terminal 0.5A Positive Voltage Regulator Features Description • • • • • The MC78MXX/LM78MXX series of three-terminal positive regulators are available in the TO-220/D-PAK package with several fixed output voltages making it useful in a wide range of applications. Output Current up to 0.5A Output Voltages of 5, 6, 8, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area (SOA)Protection TO-220 GND 1 D-PAK GND 1 1. Input 2. GND 3. Output Internal Block Digram INPUT SERIES PASS ELEMENT 1 SOA PROTECTION CURRENT GENERATOR STARTING CIRCUIT REFERENCE VOLTAGE OUTPUT 3 R1 ERROR AMPLIFIER R2 THERMAL PROTECTION GND 2 Rev. 1.0.5 ©2002 Fairchild Semiconductor Corporation MC78MXX/LM78MXX Absolute Maximum Ratings Parameter Symbol Value Unit VI VI 35 40 V V Thermal Resistance Junction-Case (Note1) TO-220 (Tc = +25°C) RθJC 2.5 °C/W Thermal Resistance Junction-Air (Note1, 2) TO-220 (Ta = +25°C) D-PAK (Ta = +25°C) RθJA 66 92 °C/W Operating Junction Temperature Range TOPR 0 ~ +150 °C Storage Temperature Range TSTG -65 ~ +150 °C Input Voltage (for VO = 5V to 18V) (for VO = 24V) Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow Electrical Characteristics (MC78M05/LM78M05) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33µF, CO=0.1µF) Parameter Output Voltage Symbol VO Line Regulation (Note3) ∆VO Load Regulation (Note3) ∆VO Quiescent Current Quiescent Current Change Output Voltage Drift IQ ∆IQ ∆V/∆T Conditions Min. Typ. Max. TJ = +25°C 4.8 5 5.2 IO = 5mA to 350mA VI = 7V to 20V 4.75 5 5.25 VI = 7V to 25V - - 100 VI = 8V to 25V - - 50 IO = 5mA to 0.5A, TJ =+25°C - - 100 IO = 5mA to 200mA, TJ =+25 °C - - 50 TJ =+25°C - 4.0 6.0 IO = 5mA to 350mA - - 0.5 IO = 200mA VI = 8V to 25V - - 0.8 IO = 5mA TJ = 0 to +125°C - -0.5 - mV/°C IO = 200mA TJ =+25°C Unit V mV mV mA mA Output Noise Voltage VN f = 10Hz to 100kHz - 40 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mA VI = 8V to 18V, TJ =+25 °C - 80 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ =+25°C, VI = 35V - 300 - mA Peak Current IPK TJ =+25°C - 700 - mA Note: 3. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. 2 MC78MXX/LM78MXX Electrical Characteristics (MC78M06) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI =11V, unless otherwise specified, CI=0.33µF, CO=0.1µF) Parameter Output Voltage Symbol VO Line Regulation (Note1) ∆VO Load Regulation (Note1) ∆VO Quiescent Current Quiescent Current Change Output Voltage Drift IQ ∆IQ ∆V/∆T Conditions Min. Typ. Max. TJ = +25°C 5.75 6 6.25 IO = 5mA to 350mA VI = 8V to 21V 5.7 6 6.3 VI = 8V to 25V - - 100 VI = 9V to 25V - - 50 IO = 5mA to 0.5A, TJ = +25°C - - 120 IO = 5mA to 200mA, TJ = +25°C - - 60 TJ = +25°C - 4.0 6.0 IO = 5mA to 350mA - - 0.5 IO = 200mA VI = 9V to 25V - - 0.8 IO = 5mA TJ = 0 to +125°C - -0.5 - mV/°C IO = 200mA TJ = +25°C Unit V mV mV mA mA Output Noise Voltage VN f = 10Hz to 100kHz - 45 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mA VI = 9V to 19V, TJ =+25 °C - 80 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI= 35V - 300 - mA Peak Current IPK TJ =+25°C - 700 - mA Note: 1. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. 3 MC78MXX/LM78MXX Electrical Characteristics (MC78M08) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=14V, unless otherwise specified, CI = 0.33µF, CO=0.1µF) Parameter Output Voltage Symbol VO Line Regulation (Note1) ∆VO Load Regulation (Note1) ∆VO Quiescent Current IQ Conditions Min. Typ. Max. TJ =+25°C 7.7 8 8.3 IO = 5mA to 350mA VI = 10.5V to 23V 7.6 8 8.4 VI = 10.5V to 25V - - 100 VI = 11V to 25V - - 50 IO = 5mA to 0.5A, TJ =+25°C - - 160 IO = 5mA to 200mA, TJ =+25°C - - 80 TJ = +25°C - 4.0 6.0 IO = 5mA to 350mA - - 0.5 IO = 200mA VI = 10.5V to 25V - - 0.8 IO = 200mA TJ =+25°C Unit V mV mV mA Quiescent Current Change ∆IQ Output Voltage Drift RR IO = 5mA TJ = 0 to +125°C - −0.5 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 52 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mA VI = 11.5V to 21.5V, TJ =+25 °C - 80 - dB Dropout Voltage VD TJ = +25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA mA Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 4 MC78MXX/LM78MXX Electrical Characteristics (MC78M12) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=19V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Parameter Output Voltage Symbol Min. Typ. Max. TJ = +25°C 11.5 12 12.5 IO = 5mA to 350mA VI = 14.5V to 27V 11.4 12 12.6 VI = 14.5V to 30V - - 100 VI = 16V to 30V - - 50 IO = 5mA to 0.5A, TJ = +25°C - - 240 IO = 5mA to 200mA, TJ = +25°C - - 120 TJ =+25°C - 4.1 6.0 IO = 5mA to 350mA - - 0.5 ∆IQ IO = 200mA VI = 14.5V to 30V - - 0.8 ∆V/∆T IO = 5mA TJ = 0 to +125°C - -0.5 - mV/°C VO Line Regulation (Note1) ∆VO Load Regulation (Note1) ∆VO Quiescent Current Quiescent Current Change Output Voltage Drift IQ Conditions IO = 200mA TJ = +25°C Unit V mV mV mA mA Output Noise Voltage VN f = 10Hz to 100kHz - 75 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mA VI = 15V to 25V, TJ =+25 °C - 80 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA Note: 1. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. 5 MC78MXX/LM78MXX Electrical Characteristics (MC78M15) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=23V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Parameter Output Voltage Symbol Min. Typ. Max. TJ = +25°C 14.4 15 15.6 IO = 5mA to 350mA VI = 17.5V to 30V 14.25 15 15.75 VI = 17.5V to 30V - - 100 VI = 20V to 30V - - 50 IO = 5mA to 0.5A, TJ =+25°C - - 300 IO = 5mA to 200mA, TJ =+25°C - - 150 TJ = +25°C - 4.1 6.0 IO = 5mA to 350mA - - 0.5 ∆IQ IO = 200mA VI = 17.5V to 30V - - 0.8 ∆V/∆T IO = 5mA TJ = 0 to +125°C - -1 - mV/°C VO Line Regulation (Note1) ∆VO Load Regulation (Note1) ∆VO Quiescent Current Quiescent Current Change Output Voltage Drift IQ Conditions IO = 200mA TJ =+25°C Unit V mV mV mA mA Output Noise Voltage VN f = 10Hz to 100kHz - 100 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mA VI = 18.5V to 28.5V, TJ =+25 °C - 70 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 6 MC78MXX/LM78MXX Electrical Characteristics (MC78M18) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=26V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Parameter Min. Typ. Max. TJ = +25°C 17.3 18 18.7 IO = 5mA to 350mA VI = 20.5V to 33V 17.1 18 18.9 VI = 21V to 33V - - 100 VI = 24V to 33V - - 50 IO = 5mA to 0.5A, TJ = +25°C - - 360 IO = 5mA to 200mA, TJ = +25°C - - 180 TJ = +25°C - 4.2 6.0 IO = 5mA to 350mA - - 0.5 IO = 200mA VI = 21V to 33V - - 0.8 IO = 5mATJ = 0 to 125°C - -1.1 - mV/°C VN f = 10Hz to 100kHz - 100 - µV/Vo Ripple Rejection RR f = 120Hz, IO= 300mA , VI = 22V to 32V TJ =+25 °C - 70 - dB Dropout Voltage VD TJ = +25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA Output Voltage Symbol VO Line Regulation (Note1) ∆VO Load Regulation (Note1) ∆VΟ Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage IQ ∆IQ ∆V/∆T Conditions IO = 200mA TJ = +25°C Unit V mV mV mA mA Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 7 MC78MXX/LM78MXX Electrical Characteristics (MC78M24) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=33V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Parameter Symbol Conditions Min. Typ. Max. 23 24 25 22.8 24 25.2 IO = 200mA VI = 27V to 38V TJ =+25°C VI = 28V to 38V - - 100 - - 50 IO = 5mA to 0.5A, TJ =+25°C - - 480 IO = 5mA to 200mA, TJ =+25°C - - 240 TJ = +25°C - 4.2 6.0 IO = 5mA to 350mA - - 0.5 ∆IQ IO = 200mA VI = 27V to 38V - - 0.8 ∆V/∆T IO = 5mA TJ = 0 to +125°C - -1.2 - mV/°C TJ =+25°C Output Voltage VO Line Regulation (Note1) ∆VO Load Regulation (Note1) ∆VO Quiescent Current Quiescent Current Change Output Voltage Drift IQ IO = 5mA to 350mA VI = 27V to 38V Unit V mV mV mA mA Output Noise Voltage VN f = 10Hz to 100kHz - 170 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mA VI = 28V to 38V, TJ =+25 °C - 70 - dB Dropout Voltage VD TJ = +25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 8 MC78MXX/LM78MXX Typical Applications 1 VI CI 3 MC78MXX LM78MXX VO 2 CO 0.3µF 0.1µF Figure 1. Fixed Output Regulator 1 VI CI 3 MC78MXX LM78MXX 2 0.33µF CO VXX 0.1µF IO IO R1 Vxx IO = R1 +IO Figure 2. Constant Current Regulator Notes: 1. To specify an output voltage, substitute voltage value for "XX" 2. Although no output capacitor is needed for stability, it does improve transient response. 3. CI is required if regulator is located an appreciable distance from power Supply filter 1 VI CI MC78MXX LM78MXX 2 0.33µF IO 3 CO VO VXX R1 0.1µF IR1 ≥ 5IO VO = VXX (1+R2/R1) +IOR2 R2 Figure 3. Circuit for Increasing Output Voltage 9 MC78MXX/LM78MXX 1 VI MC78M05 LM78M05 3 VO 2 CI CO 0.33µF 2 7 6 0.1µF LM741 3 10kΩ 4 Figure 4. Adjustable Output Regulator (7 to 30V) 13V < VI < 25V 1 VI C1 0.33µF MC78M05 LM78M05 3 VO 2 VXX R4 910Ω R5 9.1kΩ 6 -7 < -VI < 17V 4 Figure 5. 0.5 to 10V Regulator 10 C2 7 _ 2 LM741 + 3 R3 R1 0.1µF 10kΩ VO = Vxx R4 R1 MC78MXX/LM78MXX Mechanical Dimensions Package Dimensions in millimeters TO-220 4.50 ±0.20 2.80 ±0.10 (3.00) +0.10 1.30 –0.05 18.95MAX. (3.70) ø3.60 ±0.10 15.90 ±0.20 1.30 ±0.10 (8.70) (1.46) 9.20 ±0.20 (1.70) 9.90 ±0.20 (45° 1.52 ±0.10 0.80 ±0.10 2.54TYP [2.54 ±0.20] 10.08 ±0.30 (1.00) 13.08 ±0.20 ) 1.27 ±0.10 +0.10 0.50 –0.05 2.40 ±0.20 2.54TYP [2.54 ±0.20] 10.00 ±0.20 11 MC78MXX/LM78MXX Mechanical Dimensions (Continued) Package Dimensions in millimeters D-PAK MIN0.55 0.91 ±0.10 9.50 ±0.30 0.50 ±0.10 0.76 ±0.10 0.50 ±0.10 1.02 ±0.20 2.30TYP [2.30±0.20] (3.05) (2XR0.25) (0.10) 2.70 ±0.20 6.10 ±0.20 9.50 ±0.30 0.76 ±0.10 12 (1.00) 6.60 ±0.20 (5.34) (5.04) (1.50) (0.90) 2.30 ±0.20 (0.70) 2.30TYP [2.30±0.20] (0.50) 2.30 ±0.10 0.89 ±0.10 MAX0.96 (4.34) 2.70 ±0.20 0.80 ±0.20 0.60 ±0.20 (0.50) 6.10 ±0.20 5.34 ±0.30 0.70 ±0.20 6.60 ±0.20 MC78MXX/LM78MXX Ordering Information Product Number Package Operating Temperature LM78M05CT TO-220 0 ~ +125°C Product Number Package Operating Temperature MC78M05CT MC78M06CT MC78M08CT MC78M12CT TO-220 MC78M15CT MC78M18CT 0 ~ +125°C MC78M24CT MC78M05CDT MC78M06CDT MC78M08CDT D-PAK MC78M12CDT 13 MC78MXX/LM78MXX DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 11/12/02 0.0m 001 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation