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MC78M00, MC78M00A
Series
Three-Terminal
Medium Current 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.
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
Representative Schematic Diagram
1.0 k 1.0 k
300
3.6
k
6.4
k
210
6.7
V 16 k
1.0 k
100
200
3.0 k
5.6 k
300
6.0 k
2.0 k 3.9 k
40
pF
50 200
Input
0.24
13
Output
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2
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MARKING
DIAGRAMS
TO–220
T SUFFIX
CASE 221A
Heatsink surface
connected to Pin 2.
MC
78MxxZT
ALYWW
1
3
DPAK
DT SUFFIX
CASE 369A
8MxxZ
ALYWW
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
Pin 1. Input
2. Ground
3. Output
xx = Voltage Option
Z = A, B, or C Option
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
6.0 2.8 k
k
This device contains 28 active transistors.
Gnd
© Semiconductor Components Industries, LLC, 2000
April, 2000 – Rev. 7
1
Publication Order Number:
MC78M00/D

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MC78M00, MC78M00A Series
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Rating
Input Voltage (5.0 V–18 V)
(20 V–24V)
Power Dissipation (Package Limitation)
Plastic Package, T Suffix
TA = 25°C
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case
Plastic Package, DT Suffix
TA = 25°C
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case
Operating Junction Temperature Range
Storage Temperature Range
NOTE: ESD data available upon request.
Symbol
VI
PD
θJA
θJC
PD
θJA
θJC
TJ
Tstg
Value
35
40
Internally Limited
70
5.0
Internally Limited
92
5.0
+150
–65 to +150
Unit
Vdc
°C/W
°C/W
°C/W
°C/W
°C
°C
MC78M05C/AC/B ELECTRICAL CHARACTERISTICS (VI = 10 V, IO = 350 mA, 0°C < TJ < 125°C, PD 5.0 W,
unless otherwise noted.)
Characteristics
Symbol Min Typ Max
Output Voltage (TJ = 25°C)
MC78M05C
MC78M05AC
VO
4.8 5.0 5.2
4.9 5.0 5.1
Output Voltage Variation
(7.0 Vdc VI 20 Vdc, 5.0 mA IO 350 mA)
MC78M05C
MC78M05AC
VO
4.75 – 5.25
4.80 – 5.20
Line Regulation
(TJ = 25°C, 7.0 Vdc VI 25 Vdc, IO = 200 mA)
Load Regulation
(TJ = 25°C, 5.0 mA IO 200 mA)
(TJ = 25°C, 5.0 mA IO 500 mA)
Input Bias Current (TJ = 25°C)
Quiescent Current Change
(8.0 Vdc VI 25 Vdc, IO = 200 mA)
(5.0 mA IO 350 mA)
Output Noise Voltage (TA = 25°C, 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 = 25°C)
Dropout Voltage
(TJ = 25°C)
Short Circuit Current Limit (TJ = 25°C, VI = 35 V)
Average Temperature Coefficient of Output Voltage
(IO = 5.0 mA)
Peak Output Current
(TJ = 25°C)
Regline
3.0 5.0
Regload
IIB
IIB
Vn
RR
VI–VO
62
62
20 100
10 50
3.2 6.0
– 0.8
– 0.5
40 –
––
80 –
2.0 –
IOS – 50 –
VO/T – ±0.2 –
IO – 700 –
Unit
Vdc
Vdc
mV
mV
mA
mA
µV
dB
Vdc
mA
mV/°C
mA
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MC78M00, MC78M00A Series
MC78M06C ELECTRICAL CHARACTERISTICS (VI = 11 V, IO = 350 mA, 0°C < TJ < 125°C, PD 5.0 W, unless otherwise noted.)
Characteristics
Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C)
Output Voltage Variation
(8.0 Vdc VI 21 Vdc, 5.0 mA IO 350 mA)
Line Regulation
(TJ = 25°C, 8.0 Vdc VI 25 Vdc, IO = 200 mA)
Load Regulation
(TJ = 25°C, 5.0 mA IO 500 mA)
(TJ = 25°C, 5.0 mA IO 200 mA)
Input Bias Current (TJ = 25°C)
Quiescent Current Change
(9.0 Vdc VI 25 Vdc, IO = 200 mA)
(5.0 mA IO 350 mA)
Output Noise Voltage (TA = 25°C, 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 = 25°C)
Dropout Voltage
(TJ = 25°C)
Short Circuit Current Limit (TJ = 25°C, VI = 35 V)
Average Temperature Coefficient of Output Voltage
(IO = 5.0 mA)
Peak Output Current
(TJ = 25°C)
VO 5.75 6.0 6.25 Vdc
VO 5.7 – 6.3 Vdc
Regline
5.0 50 mV
Regload
IIB
IIB
Vn
RR
VI – VO
59
59
mV
20 120
10 60
3.2 6.0 mA
mA
– 0.8
– 0.5
45 – µV
dB
––
80 –
2.0 – Vdc
IOS – 50 – mA
VO/T – ±0.2 – mV/°C
IO – 700 – mA
MC78M08C/AC/B ELECTRICAL CHARACTERISTICS (VI = 14 V, IO = 350 mA, 0°C < TJ < 125°C, PD 5.0 W,
unless otherwise noted.)
Characteristics
Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C)
MC78M08C
MC78M08AC
VO Vdc
7.70 8.0 8.30
7.84 8.0 8.16
Output Voltage Variation
(10.5 Vdc VI 23 Vdc, 5.0 mA IO 350 mA)
MC78M08C
MC78M08AC
VO Vdc
7.6 – 8.4
7.7 – 8.3
Line Regulation
(TJ = 25°C, 10.5 Vdc VI 25 Vdc, IO = 200 mA)
Load Regulation
(TJ = 25°C, 5.0 mA IO 500 mA)
(TJ = 25°C, 5.0 mA IO 200 mA)
Input Bias Current (TJ = 25°C)
Quiescent Current Change
(10.5 Vdc VI 25 Vdc, IO = 200 mA)
(5.0 mA IO 350 mA)
Output Noise Voltage (TA = 25°C, 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 = 25°C)
Dropout Voltage
(TJ = 25°C)
Short Circuit Current Limit (TJ = 25°C, VI = 35 V)
Average Temperature Coefficient of Output Voltage
(IO = 5.0 mA)
Peak Output Current
(TJ = 25°C)
Regline
6.0 50 mV
Regload
IIB
IIB
Vn
RR
VI–VO
56
56
mV
25 160
10 80
3.2 6.0 mA
mA
– 0.8
– 0.5
52 – µV
dB
––
80 –
2.0 – Vdc
IOS – 50 – mA
VO/T – ±0.2 – mV/°C
IO – 700 – mA
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