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MC78M00, MC78M00A Series 500 mA Positive Voltage Regulators
The MC78M00/MC78M00A Series positive voltage regulators are identical to the popular MC7800 Series devices, except that they are specified for only half the output current. Like the MC7800 devices, the MC78M00 three-terminal regulators are intended for local, on-card voltage regulation. Internal current limiting, thermal shutdown circuitry and safe-area compensation for the internal pass transistor combine to make these devices remarkably rugged under most operating conditions. Maximum output current, with adequate heatsinking is 500 mA.
Features http://onsemi.com MARKING DIAGRAMS
TO-220 T SUFFIX CASE 221A Heatsink surface connected to Pin 2. 1 2 3 xx XX A WL Y WW G 4
1.0 k 1.0 k 210 6.7 V 16 k 300 3.6 k 6.4 k 5.6 k 1.0 k 3.0 k 10 pF Input
MC 78MxxXXT AWLYWWG
* * * * * *
No External Components Required Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe-Area Compensation MC78M00A High Accuracy (2%) Available for 5.0 V, 8.0 V, 12 V and 15 V Pb-Free Packages are Available*
= Voltage Option = Appropriate Suffix Options = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package
12 3
100 200
DPAK-3 DT SUFFIX CASE 369C
xxxxxG ALYWW
Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. xxxxx A L Y WW G = Device Type and Voltage Option Code = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package Pin 1. Input 2. Ground 3. Output
300 0.24 13 50 200
520
Output
2.0 k
3.9 k
2.6 k
6.0 k
40 pF
ORDERING INFORMATION
6.0 k 2.8 k GND See detailed ordering and shipping information in the package dimensions section on page 10-14 of this data sheet.
This device contains 28 active transistors.
DEVICE MARKING INFORMATION
See general marking information in the device marking section on page 10 of this data sheet.
Figure 1. Representative Schematic Diagram
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
(c) Semiconductor Components Industries, LLC, 2005
1
November, 2005 - Rev. 16
Publication Order Number: MC78M00/D
MC78M00, MC78M00A Series
MAXIMUM RATINGS (TA = 25C, unless otherwise noted) (Note 1)
Rating Input Voltage (5.0 V-18 V) (20 V-24V) Power Dissipation (Package Limitation) Plastic Package, T Suffix TA = 25C Thermal Resistance, Junction-to-Air Thermal Resistance, Junction-to-Case Plastic Package, DT Suffix TA = 25C Thermal Resistance, Junction-to-Air Thermal Resistance, Junction-to-Case Operating Junction Temperature Range Storage Temperature Range PD qJA qJC TJ Tstg Internally Limited 92 5.0 +150 -65 to +150 C/W C/W C C PD qJA qJC Internally Limited 70 5.0 C/W C/W Symbol VI Value 35 40 Unit Vdc
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per MIL-STD-883, Method 3015. Machine Model Method 200 V.
MC78M05C/AC/B/AB ELECTRICAL CHARACTERISTICS (VI = 10 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
unless otherwise noted) (Note 2) Characteristics Output Voltage (TJ = 25C) MC78M05C MC78M05AC Output Voltage Variation (7.0 Vdc VI 20 Vdc, 5.0 mA IO 350 mA) MC78M05C MC78M05AC Line Regulation (TJ = 25C, 7.0 Vdc VI 25 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (8.0 Vdc VI 25 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 8.0 V VI 18 V) (IO = 300 mA, f = 120 Hz, 8.0 VI 18 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) 2. Tlow = 0C for MC78MxxAC, C = -40C for MC78MxxAB, B Symbol VO 4.8 4.9 VO 4.75 4.80 Regline Regload - - IIB DIIB - - Vn RR 62 62 VI-VO IOS DVO/DT IO Thigh = +125C for MC78MxxAB, AC, B, C - - - - - 80 2.0 50 0.2 700 - - - - - - Vdc mA mV/C mA - - - 40 0.8 0.5 - mV dB - 20 10 3.2 100 50 6.0 mA mA - - - 3.0 5.25 5.20 50 mV mV 5.0 5.0 5.2 5.1 Vdc Min Typ Max Unit Vdc
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MC78M00, MC78M00A Series
MC78M06C ELECTRICAL CHARACTERISTICS (VI = 11 V, IO = 350 mA, 0C < TJ < 125C, PD 5.0 W, unless otherwise noted)
Characteristics Output Voltage (TJ = 25C) Output Voltage Variation (8.0 Vdc VI 21 Vdc, 5.0 mA IO 350 mA) Line Regulation (TJ = 25C, 8.0 Vdc VI 25 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (9.0 Vdc VI 25 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 9.0 V VI 19 V) (IO = 300 mA, f = 120 Hz, 9.0 V VI 19 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) Symbol VO VO Regline Regload - - IIB DIIB - - - - 59 59 - - - - 20 10 3.2 - - 45 - 80 2.0 50 0.2 700 120 60 6.0 0.8 0.5 - - - - - - - mA mA Min 5.75 5.7 - Typ 6.0 - 5.0 Max 6.25 6.3 50 Unit Vdc Vdc mV mV
Vn RR
mV dB
VI - VO IOS DVO/DT IO
Vdc mA mV/C mA
MC78M08C/AC/B/AB ELECTRICAL CHARACTERISTICS (VI = 14 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
unless otherwise noted) (Note 3) Characteristics Output Voltage (TJ = 25C) MC78M08C MC78M08AC Output Voltage Variation (10.5 Vdc VI 23 Vdc, 5.0 mA IO 350 mA) MC78M08C MC78M08AC Line Regulation (TJ = 25C, 10.5 Vdc VI 25 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (10.5 Vdc VI 25 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 11.5 V VI 21.5 V) (IO = 300 mA, f = 120 Hz, 11.5 V VI 21.5 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) 3. Tlow = 0C for MC78MxxAC, C = -40C for MC78MxxAB, B Symbol VO 7.70 7.84 VO 7.6 7.7 - - - 6.0 8.4 8.3 50 8.0 8.0 8.30 8.16 Vdc Min Typ Max Unit Vdc
Regline Regload
mV mV
- - IIB DIIB - - Vn RR 56 56 - - - - - -
25 10 3.2 - - 52 - 80 2.0 50 0.2 700
160 80 6.0 0.8 0.5 - - - - - - - mV dB mA mA
VI-VO IOS DVO/DT IO
Vdc mA mV/C mA
Thigh = +125C for MC78MxxAB, AC, B, C
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MC78M00, MC78M00A Series
MC78M09C/B ELECTRICAL CHARACTERISTICS (VI = 15 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W, unless otherwise
noted) (Note 4) Characteristics Output Voltage (TJ = 25C) Output Voltage Variation (11.5 Vdc VI 23 Vdc, 5.0 mA IO 350 mA) Line Regulation (TJ = 25C, 11.5 Vdc VI 25 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (11.5 Vdc VI 25 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 12.5 V VI 22.5 V) (IO = 300 mA, f = 120 Hz, 12.5 V VI 22.5 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) unless otherwise noted) (Note 4) Characteristics Output Voltage (TJ = 25C) MC78M12C MC78M12AC Output Voltage Variation (14.5 Vdc VI 27 Vdc, 5.0 mA IO 350 mA) MC78M12C MC78M12AC Line Regulation (TJ = 25C, 14.5 Vdc VI 30 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (14.5 Vdc VI 30 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 15 V VI 25 V) (IO = 300 mA, f = 120 Hz, 15 V VI 25 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) 4. Tlow = 0C for MC78MxxAC, C = -40C for MC78MxxAB, B Symbol VO 11.50 11.76 VO 11.4 11.5 - - - 8.0 12.6 12.5 50 12 12 12.50 12.24 Vdc Min Typ Max Unit Vdc Symbol VO VO Regline Regload - - - - - - 56 56 - - - - 25 10 3.2 - - 52 - 80 2.0 50 0.2 700 180 90 6.0 0.8 0.5 - - - - - - - Min 8.64 8.55 - Typ 9.0 - 6.0 Max 9.45 9.45 50 Unit Vdc Vdc mV mV
IIB DIIB
mA mA
Vn RR
mV dB
VI-VO IOS DVO/DT IO
Vdc mA mV/C mA
MC78M12C/AC/B/AB ELECTRICAL CHARACTERISTICS (VI = 19 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
Regline Regload
mV mV
IIB DIIB
- - - - - - 55 55 - - - -
25 10 3.2 - - 75 - 80 2.0 50 0.3 700
240 120 6.0 0.8 0.5 - - - - - - -
mA mA
Vn RR
mV dB
VI-VO IOS DVO/DT IO
Vdc mA mV/C mA
Thigh = +125C for MC78MxxAB, AC, B, C
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MC78M00, MC78M00A Series
MC78M15C/AC/B/AB ELECTRICAL CHARACTERISTICS (VI = 23 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
unless otherwise noted) (Note 5) Characteristics Output Voltage (TJ = 25C) MC78M15C MC78M15AC Output Voltage Variation (17.5 Vdc VI 30 Vdc, 5.0 mA IO 350 mA) MC78M15C MC78M15AC Input Regulation (TJ = 25C, 17.5 Vdc VI 30 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (17.5 Vdc VI 30 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 18.5 V VI 28.5 V) (IO = 300 mA, f = 120 Hz, 18.5 V VI 28.5 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) Symbol VO 14.4 14.7 VO 14.25 14.40 - - - 10 15.75 15.60 50 15 15 15.6 15.3 Vdc Min Typ Max Unit Vdc
Regline Regload
mV mV
IIB DIIB
- - - - - - 54 54 - - - -
25 10 3.2 - - 90 - 70 2.0 50 0.3 700
300 150 6.0 0.8 0.5 - - - - - - -
mA mA
Vn RR
mV dB
VI-VO IOS DVO/DT IO
Vdc mA mV/C mA
MC78M18C/B ELECTRICAL CHARACTERISTICS (VI = 27 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
unless otherwise noted) (Note 5) Characteristics Output Voltage (TJ = 25C) Output Voltage Variation (21 Vdc VI 33 Vdc, 5.0 mA IO 350 mA) Line Regulation (TJ = 25C, 21 Vdc VI 33 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (21 Vdc VI 33 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 22 V VI 32 V) (IO = 300 mA, f = 120 Hz, 22 V VI 32 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) 5. Tlow = 0C for MC78MxxAC, C = -40C for MC78MxxAB, B Symbol VO VO Regline Regload - - - - - - 53 53 - - - - 30 10 3.2 - - 100 - 70 2.0 50 0.3 700 360 180 6.5 0.8 0.5 - - - - - - - Min 17.3 17.1 - Typ 18 - 10 Max 18.7 18.9 50 Unit Vdc Vdc mV mV
IIB DIIB
mA mA
Vn RR
mV dB
VI-VO IOS DVO/DT IO
Vdc mA mV/C mA
Thigh = +125C for MC78MxxAB, AC, B, C
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MC78M00, MC78M00A Series
MC78M20C/B ELECTRICAL CHARACTERISTICS (VI = 29 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
unless otherwise noted) (Note 6) Characteristics Output Voltage (TJ = 25C) Output Voltage Variation (23 Vdc VI 35 Vdc, 5.0 mA IO 350 mA) Line Regulation (TJ = 25C, 23 Vdc VI 35 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (23 Vdc VI 35 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 24 V VI 34 V) (IO = 300 mA, f = 120 Hz, 24 V VI 34 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C, VI = 35 V) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) Symbol VO VO Regline Regload - - IIB DIIB - - Vn RR 52 52 VI-VO IOS DVO/DT IO - - - - - 70 2.0 50 0.5 700 - - - - - - Vdc mA mV/C mA - - - 110 0.8 0.5 - mV dB - 30 10 3.2 400 200 6.5 mA mA Min 19.2 19 - Typ 20 - 10 Max 20.8 21 50 Unit Vdc Vdc mV mV
MC78M24C/B ELECTRICAL CHARACTERISTICS (VI = 33 V, IO = 350 mA, TJ = Tlow to Thigh, PD 5.0 W,
unless otherwise noted) (Note 6) Characteristics Output Voltage (TJ = 25C) Output Voltage Variation (27 Vdc VI 38 Vdc, 5.0 mA IO 350 mA) Line Regulation (TJ = 25C, 27 Vdc VI 38 Vdc, IO = 200 mA) Load Regulation (TJ = 25C, 5.0 mA IO 500 mA) (TJ = 25C, 5.0 mA IO 200 mA) Input Bias Current (TJ = 25C) Quiescent Current Change (27 Vdc VI 38 Vdc, IO = 200 mA) (5.0 mA IO 350 mA) Output Noise Voltage (TA = 25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 100 mA, f = 120 Hz, 28 V VI 38 V) (IO = 300 mA, f = 120 Hz, 28 V VI 38 V, TJ = 25C) Dropout Voltage (TJ = 25C) Short Circuit Current Limit (TJ = 25C) Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) Peak Output Current (TJ = 25C) 6. Tlow = 0C for MC78MxxAC, C = -40C for MC78MxxAB, B Symbol VO VO Regline Regload - - IIB DIIB - - Vn RR 50 50 VI-VO IOS DVO/DT IO Thigh = +125C for MC78MxxAB, AC, B, C - - - - - 70 2.0 50 0.5 700 - - - - - - Vdc mA mV/C mA - - - 170 0.8 0.5 - mV dB - 30 10 3.2 480 240 7.0 mA mA Min 23 22.8 - Typ 24 - 10 Max 25 25.2 50 Unit Vdc Vdc mV mV
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MC78M00, MC78M00A Series
DEFINITIONS Line Regulation - The change in output voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected. Load Regulation - The change in output voltage for a change in load current at constant chip temperature. Maximum Power Dissipation - The maximum total device dissipation for which the regulator will operate within specifications. Input Bias Current - That part of the input current that is not delivered to the load. Output Noise Voltage - The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range. Long Term Stability - Output voltage stability under accelerated life test conditions with the maximum rated voltage listed in the devices' electrical characteristics and maximum power dissipation.
R JA, THERMAL RESISTANCE
90 80 70 60 50
JUNCTION-TO-AIR (C/W)
Free Air Mounted Vertically Minimum Size Pad
PD(max) for TA = 50C 2.0 2.0 oz. Copper L L 1.6 1.2 0.8 0.4
RqJA 40 0 5.0 10 15 20
25
0 30
L, LENGTH OF COPPER (mm)
Figure 2. DPAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length
10 PD, POWER DISSIPATION (W) 5.0 3.0 2.0 1.0 0.5 0.3 0.2 0.1 25 qJC = 5C/W PD(max) = 7.52 W 50 75 100 125 150 TA, AMBIENT TEMPERATURE (C) qHS = 20C/W No Heat Sink qHS = 10C/W Infinite Heat Sink
Figure 3. Worst Case Power Dissipation versus Ambient Temperature (TO-220)
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PD, MAXIMUM POWER DISSIPATION (W)
100
2.4
IIII IIII IIII
MC78M00, MC78M00A Series
1.0 V I -V O , DROPOUT VOLTAGE (V) 0.9 I O , OUTPUT CURRENT (A) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 5.0 10 15 20 25 30 35 40 TJ = 125C TJ = 25C 2.5 2.0 IO = 500 mA 1.5 IO = 100 mA 1.0 0.5 0 DVO = 100 mV IO = 10 mA
0
25
50
75
100
125
150
VI - VO, DROPOUT VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (C)
Figure 4. Peak Output Current versus Dropout Voltage
Figure 5. Dropout Voltage versus Junction Temperature
100 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) Iout = 500 mA 80
100
80
60
40
Iout = 500 mA Vout = 5.0 V Vin = 10 V CO = 0 TJ = 25C
60
40 30 0.01
Vout = 5.0 V Vin = 10 V CO = 0 f = 120 Hz TJ = 25C
20 1.0
10
100
1.0 k
10 k
100 k
1.0 M
10 M
100 M
0.1
0.5 1.0
10
f, FREQUENCY (Hz)
IO, OUTPUT CURRENT (A)
Figure 6. Ripple Rejection versus Frequency
Figure 7. Ripple Rejection versus Output Current
4.0 TJ = 25C I B , BIAS CURRENT (mA) 3.0 TJ = 125C I B , BIAS CURRENT (mA)
5.0 4.0 3.0 2.0 1.0 0 0.01 TJ = 25C
2.0 TJ = 25C 1.0 TJ = 125C 0 0 5.0 10 15
VO = 5.0 V IO = 0.5 A
TJ = 125C VI-VO = 5.0 V
20
25
30
35
40
0.1
0.5
1.0
10
VI, INPUT VOLTAGE (Vdc)
IO, OUTPUT CURRENT (A)
Figure 8. Bias Current versus Input Voltage
Figure 9. Bias Current versus Output Current
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MC78M00, MC78M00A Series
APPLICATIONS INFORMATION
Design Considerations
The MC78M00/MC78M00A Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition, Internal Short Circuit Protection that limits the maximum current the circuit will pass, and Output Transistor Safe-Area Compensation that reduces the output short circuit current as the voltage across the pass transistor is increased. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the
Input 0.33 mF IO MC78M05C R Constant Current to Grounded Load
regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency characteristics to insure stable operation under all load conditions. A 0.33 mF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulator's input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead.
VO, 7.0 V to 20 V Vin-Vout 2.0 V Output Input MC78M05C
7 The MC78M00 regulators can also be used as a current source when connected as above. In order to minimize dissipation the MC78M05C is chosen in this application. Resistor R determines the current as follows: IO = 5.0 V + IIB R 0.33 mF 1.0 k 6 4
* +
2 0.1 mF 3 10 k
MC1741
IIB = 1.5 mA over line and load changes. For example, a 500 mA current source would require R to be a 10 W, 10 W resistor and the output voltage compliance would be the input voltage less 7.0 V. The addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. The minimum voltage obtainable with this arrangement is 2.0 V greater than the regulator voltage.
Figure 10. Current Regulator
Figure 11. Adjustable Output Regulator
MJ2955 or Equiv. Input
Input
RSC
MJ2955 or Equiv.
R
MC78MXXC
Output R
2N6049 or Equiv. MC78MXXC 1.0 mF Output
1.0 mF
1.0 mF
XX = 2 digits of type number indicating voltage. XX = 2 digits of type number indicating voltage. The MC78M00 series can be current boosted with a PNP transistor. The MJ2955 provides current to 5.0 A. Resistor R in conjunction with the VBE of the PNP determines when the pass transistor begins conducting; this circuit is not short circuit proof. Input-output differential voltage minimum is increased by VBE of the pass transistor. The circuit of Figure 12 can be modified to provide supply protection against short circuits by adding a short circuit sense resistor, Rsc, and an additional PNP transistor. The current sensing PNP must be able to handle the short circuit current of the three-terminal regulator .Therefore, a 4.0 A plastic power transistor is specified.
Figure 12. Current Boost Regulator
Figure 13. Current Boost with Short Circuit Protection
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MC78M00, MC78M00A Series
ORDERING INFORMATION
Device MC78M05CDT MC78M05CDTG MC78M05CDTRK MC78M05CDTRKG MC78M05ACDT MC78M05ACDTG MC78M05ACDTRK MC78M05ACDTRKG MC78M05CT MC78M05CTG MC78M05ACT MC78M05ACTG 5.0 V MC78M05ABDT MC78M05ABDTG MC78M05ABDTRK MC78M05ABDTRKG MC78M05ABT MC78M05ABTG MC78M05BDT MC78M05BDTG MC78M05BDTRK MC78M05BDTRKG MC78M05BT MC78M05BTG TJ = -40 to +125C DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) 8M05A 8M05A 8M05A 8M05A 78M05ABT 78M05ABT 8M05B 8M05B 8M05B 8M05B 78M05BT 78M05BT 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail TJ = 0 to +125C Output Voltage Temperature Range Package DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 (Pb-Free) Marking 78M05 78M05 78M05 78M05 8M05D 8M05D 8M05D 8M05D 78M05CT 78M05CT 78M05ACT 78M05ACT 50 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail Shipping
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
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MC78M00, MC78M00A Series
ORDERING INFORMATION
Device MC78M06CDT MC78M06CDTG MC78M06CDTRK MC78M06CDTRKG MC78M06CT MC78M06CTG MC78M06BT MC78M06BTG MC78M08CDT MC78M08CDTG MC78M08CDTRK MC78M08CDTRKG MC78M08ACDT MC78M08ACDTG MC78M08ACDTRK MC78M08ACDTRKG MC78M08CT MC78M08CTG MC78M08ACT MC78M08ACTG 8.0 V MC78M08ABDT MC78M08ABDTG MC78M08ABDTRK MC78M08ABDTRKG MC78M08ABT MC78M08ABTG MC78M08BDT MC78M08BDTG MC78M08BDTRK MC78M08BDTRKG MC78M08BT MC78M08BTG TJ = -40 to +125C TJ = 0 to +125C TJ = -40 to +125C 6.0 V TJ = 0 to +125C Output Voltage Temperature Range Package DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) Marking 78M06 78M06 78M06 78M06 78M06CT 78M06CT 78M06BT 78M06BT 78M08 78M08 78M08 78M08 8M08D 8M08D 8M08D 8M08D 78M08CT 78M08CT 78M08ACT 78M08ACT 8M08A 8M08A 8M08A 8M08A 78M08ABT 78M08ABT 8M08B 8M08B 8M08B 8M08B 78M08BT 78M08BT 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail Shipping
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
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11
MC78M00, MC78M00A Series
ORDERING INFORMATION
Device MC78M09CDT MC78M09CDTG MC78M09CDTRK MC78M09CDTRKG MC78M09CT MC78M09CTG MC78M09BDT MC78M09BDTG MC78M09BDTRK MC78M09BDTRKG MC78M12CDT MC78M12CDTG MC78M12CDTRK MC78M12CDTRKG MC78M12ACDT MC78M12ACDTG TJ = 0 to +125C MC78M12ACDTRK MC78M12ACDTRKG MC78M12CT MC78M12CTG MC78M12ACT MC78M12ACTG MC78M12ABDT MC78M12ABDTG MC78M12ABDTRK MC78M12ABDTRKG MC78M12ABT MC78M12ABTG MC78M12BDT MC78M12BDTG MC78M12BDTRK MC78M12BDTRKG MC78M12BT MC78M12BTG TJ = -40 to +125C 12 V TJ = -40 to +125C 9.0 V TJ = 0 to +125C Output Voltage Temperature Range Package DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) Marking 78M09 78M09 78M09 78M09 78M09CT 78M09CT 8M09B 8M09B 8M09B 8M09B 78M12 78M12 78M12 78M12 8M12D 8M12D 8M12D 8M12D 78M12CT 78M12CT 78M12ACT 78M12ACT 8M12A 8M12A 8M12A 8M12A 78M12ABT 78M12ABT 8M12B 8M12B 8M12B 8M12B 78M12BT 78M12BT 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail Shipping 75 Units / Rail 75 Units / Rail 2500 Units / Tape & Reel 2500 Units / Tape & Reel 50 Units / Rail 50 Units / Rail 75 Units / Rail 75 Units / Rail 2500 Units / Tape & Reel 2500 Units / Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
http://onsemi.com
12
MC78M00, MC78M00A Series
ORDERING INFORMATION
Device MC78M15CDT MC78M15CDTG MC78M15CDTRK MC78M15CDTRKG MC78M15ACDT MC78M15ACDTG MC78M15ACDTRK MC78M15ACDTRKG MC78M15CT MC78M15CTG MC78M15ACT MC78M15ACTG 15 V MC78M15ABDT MC78M15ABDTG MC78M15ABDTRK MC78M15ABDTRKG MC78M15ABT MC78M15ABTG MC78M15BDT MC78M15BDTG MC78M15BDTRK MC78M15BDTRKG MC78M15BT MC78M15BTG TJ = -40 to +125C DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) 8M15A 8M15A 8M15A 8M15A 78M15ABT 78M15ABT 8M15B 8M15B 8M15B 8M15B 78M15BT 78M15BT 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail TJ = 0 to +125C Output Voltage Temperature Range Package DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 (Pb-Free) Marking 78M15 78M15 78M15 78M15 8M15D 8M15D 8M15D 8M15D 78M15CT 78M15CT 78M15ACT 78M15ACT 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail Shipping
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
http://onsemi.com
13
MC78M00, MC78M00A Series
ORDERING INFORMATION
Device MC78M18CDT MC78M18CDTG MC78M18CDTRK MC78M18CDTRKG MC78M18CT MC78M18CTG MC78M18BT MC78M18BTG MC78M20CT MC78M20CTG MC78M20BT MC78M24CT MC78M24CTG 24 V MC78M24BT MC78M24BTG TJ = -40 to +125C TO-220 TO-220 (Pb-Free) 78M24BT 78M24BT TJ = 0 to +125C 20 V TJ = 0 to +125C TJ = -40 to +125C TJ = -40 to +125C 18 V TJ = 0 to +125C Output Voltage Temperature Range Package DPAK-3 DPAK-3 (Pb-Free) DPAK-3 DPAK-3 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 (Pb-Free) TO-220 TO-220 TO-220 (Pb-Free) Marking 78M18 78M18 78M18 78M18 78M18CT 78M18CT 78M18BT 78M18BT 78M20CT 78M20CT 78M20BT 78M24CT 78M24CT 50 Units / Rail 50 Units / Rail 2500 Units / Tape & Reel 75 Units / Rail Shipping
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
http://onsemi.com
14
MC78M00, MC78M00A Series
PACKAGE DIMENSIONS
DPAK-3 DT SUFFIX CASE 369C-01 ISSUE O
-T- B V R
4
SEATING PLANE
C E
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. INCHES MIN MAX 0.235 0.245 0.250 0.265 0.086 0.094 0.027 0.035 0.018 0.023 0.037 0.045 0.180 BSC 0.034 0.040 0.018 0.023 0.102 0.114 0.090 BSC 0.180 0.215 0.025 0.040 0.020 --- 0.035 0.050 0.155 --- MILLIMETERS MIN MAX 5.97 6.22 6.35 6.73 2.19 2.38 0.69 0.88 0.46 0.58 0.94 1.14 4.58 BSC 0.87 1.01 0.46 0.58 2.60 2.89 2.29 BSC 4.57 5.45 0.63 1.01 0.51 --- 0.89 1.27 3.93 ---
A S
1 2 3
Z U
K F L D G
2 PL
J H 0.13 (0.005) T
DIM A B C D E F G H J K L R S U V Z
M
SOLDERING FOOTPRINT*
6.20 0.244 2.58 0.101 5.80 0.228 1.6 0.063 6.172 0.243 3.0 0.118
SCALE 3:1
mm inches
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
http://onsemi.com
15
MC78M00, MC78M00A Series
PACKAGE DIMENSIONS
TO-220 T SUFFIX CASE 221A-09 ISSUE AA
-T- B
4
SEATING PLANE
F T S
C
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND LEAD IRREGULARITIES ARE ALLOWED. DIM A B C D F G H J K L N Q R S T U V Z INCHES MIN MAX 0.570 0.620 0.380 0.405 0.160 0.190 0.025 0.035 0.142 0.147 0.095 0.105 0.110 0.155 0.018 0.025 0.500 0.562 0.045 0.060 0.190 0.210 0.100 0.120 0.080 0.110 0.045 0.055 0.235 0.255 0.000 0.050 0.045 --- --- 0.080 MILLIMETERS MIN MAX 14.48 15.75 9.66 10.28 4.07 4.82 0.64 0.88 3.61 3.73 2.42 2.66 2.80 3.93 0.46 0.64 12.70 14.27 1.15 1.52 4.83 5.33 2.54 3.04 2.04 2.79 1.15 1.39 5.97 6.47 0.00 1.27 1.15 --- --- 2.04
Q
123
A U K
H Z L V G D N R J
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 61312, Phoenix, Arizona 85082-1312 USA Phone: 480-829-7710 or 800-344-3860 Toll Free USA/Canada Fax: 480-829-7709 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2-9-1 Kamimeguro, Meguro-ku, Tokyo, Japan 153-0051 Phone: 81-3-5773-3850 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative.
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16
MC78M00/D

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