MC78M12ACDT/RK [ONSEMI]
12V FIXED POSITIVE REGULATOR, PSSO2, PLASTIC, DPAK-3;
| 型号： | MC78M12ACDT/RK |
| 厂家： | 
ONSEMI |
| 描述： | 12V FIXED POSITIVE REGULATOR, PSSO2, PLASTIC, DPAK-3 输出元件 调节器 |
| 文件： | 总12页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
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MARKING
DIAGRAMS
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
TO–220
T SUFFIX
CASE 221A
MC
78MxxZT
ALYWW
Heatsink surface
connected to Pin 2.
1
2
3
DPAK
DT SUFFIX
CASE 369A
8MxxZ
ALYWW
• MC78M00A High Accuracy (±2%) Available for 5.0 V, 8.0 V, 12 V
and 15 V
1
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
Input
1.0 k
1.0 k
210
Pin 1. Input
2. Ground
3. Output
6.7
V
16 k
100
200
300
1.0 k
3.0 k
xx = Voltage Option
3.6
k
Z
A
L
= A, B, or C Option
= Assembly Location
= Wafer Lot
300
6.4
k
5.6 k
0.24
Y
= Year
13
WW = Work Week
50
200
Output
40
pF
ORDERING INFORMATION
See detailed ordering and shipping information in the package
6.0 k
dimensions section on page 10 of this data sheet.
2.0 k
3.9 k
6.0
k
2.8 k
Gnd
This device contains 28 active transistors.
Figure 1. Representative Schematic Diagram
Semiconductor Components Industries, LLC, 2002
1
Publication Order Number:
January, 2002 – Rev. 9
MC78M00/D
MC78M00, MC78M00A Series
MAXIMUM RATINGS (T = 25°C, unless otherwise noted.) (Note 1)
A
Rating
Symbol
Value
Unit
Input Voltage (5.0 V–18 V)
(20 V–24V)
V
I
35
40
Vdc
Power Dissipation (Package Limitation)
Plastic Package, T Suffix
T = 25°C
A
P
D
Internally Limited
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case
θ
θ
70
5.0
°C/W
°C/W
JA
JC
Plastic Package, DT Suffix
T = 25°C
A
P
D
Internally Limited
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case
θ
θ
92
5.0
°C/W
°C/W
JA
JC
Operating Junction Temperature Range
Storage Temperature Range
T
+150
°C
°C
J
T
stg
–65 to +150
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 (V = 10 V, I = 350 mA, T = T to T , P ≤ 5.0 W,
I
O
J
low
high
D
unless otherwise noted.) (Note 2)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
O
Vdc
J
MC78M05C
MC78M05AC
4.8
4.9
5.0
5.0
5.2
5.1
Output Voltage Variation
V
O
Vdc
(7.0 Vdc ≤ V ≤ 20 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
MC78M05C
MC78M05AC
4.75
4.80
–
–
5.25
5.20
Line Regulation
(T = 25°C, 7.0 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
J
Reg
–
3.0
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
20
10
100
50
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
–
3.2
6.0
mA
mA
J
IB
Quiescent Current Change
∆I
IB
(8.0 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
–
–
–
–
0.8
0.5
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
–
40
–
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 8.0 V ≤ V ≤ 18 V)
62
62
–
80
–
–
O
I
(I = 300 mA, f = 120 Hz, 8.0 ≤ V ≤ 18 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
–
2.0
–
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.2
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
2. T = 0°C for MC78MxxAC, C
T
high
= +125°C for MC78MxxAB, AC, B, C
low
= –40°C for MC78MxxAB, B
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2
MC78M00, MC78M00A Series
MC78M06C ELECTRICAL CHARACTERISTICS (V = 11 V, I = 350 mA, 0°C < T < 125°C, P ≤ 5.0 W, unless otherwise noted.)
I
O
J
D
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
V
5.75
5.7
6.0
–
6.25
6.3
Vdc
Vdc
J
O
Output Voltage Variation
O
(8.0 Vdc ≤ V ≤ 21 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
Line Regulation
(T = 25°C, 8.0 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
J
Reg
–
5.0
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
20
10
120
60
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
–
3.2
6.0
mA
mA
J
IB
Quiescent Current Change
∆I
IB
(9.0 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
–
–
–
–
–
0.8
0.5
–
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
45
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 9.0 V ≤ V ≤ 19 V)
59
59
–
80
–
–
O
I
(I = 300 mA, f = 120 Hz, 9.0 V ≤ V ≤ 19 V, T = 25°C)
O
I
J
Dropout Voltage
V – V
–
2.0
–
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.2
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
MC78M08C/AC/B/AB ELECTRICAL CHARACTERISTICS (V = 14 V, I = 350 mA, T = T to T , P ≤ 5.0 W,
I
O
J
low
high
D
unless otherwise noted.) (Note 3)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
O
Vdc
J
MC78M08C
MC78M08AC
7.70
7.84
8.0
8.0
8.30
8.16
Output Voltage Variation
V
O
Vdc
(10.5 Vdc ≤ V ≤ 23 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
MC78M08C
MC78M08AC
7.6
7.7
–
–
8.4
8.3
Line Regulation
(T = 25°C, 10.5 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
J
Reg
–
6.0
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
25
10
160
80
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
–
3.2
6.0
mA
mA
J
IB
Quiescent Current Change
∆I
IB
(10.5 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
–
–
–
–
–
0.8
0.5
–
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
52
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 11.5 V ≤V ≤ 21.5 V)
56
56
–
–
80
2.0
–
–
–
O
I
(I = 300 mA, f = 120 Hz, 11.5 V ≤V ≤ 21.5 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.2
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
3. T = 0°C for MC78MxxAC, C
T
high
= +125°C for MC78MxxAB, AC, B, C
low
= –40°C for MC78MxxAB, B
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3
MC78M00, MC78M00A Series
MC78M09C/B ELECTRICAL CHARACTERISTICS (V = 15 V, I = 350 mA, T = T to T , P ≤ 5.0 W, unless otherwise noted.)
I
O
J
low
high
D
(Note 4)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
V
8.64
8.55
9.0
–
9.45
9.45
Vdc
Vdc
J
O
Output Voltage Variation
O
(11.5 Vdc ≤ V ≤ 23 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
Line Regulation
(T = 25°C, 11.5 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
J
Reg
–
6.0
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
25
10
180
90
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
–
3.2
6.0
mA
mA
J
IB
Quiescent Current Change
∆I
IB
(11.5 Vdc ≤ V ≤ 25 Vdc, I = 200 mA)
–
–
–
–
0.8
0.5
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
–
52
–
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 12.5 V ≤V ≤ 22.5 V)
56
56
–
–
80
2.0
–
–
–
O
I
(I = 300 mA, f = 120 Hz, 12.5 V ≤V ≤ 22.5 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.2
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
MC78M12C/AC/B/AB ELECTRICAL CHARACTERISTICS (V = 19 V, I = 350 mA, T = T to T , P ≤ 5.0 W,
I
O
J
low
high
D
unless otherwise noted.) (Note 4)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
O
Vdc
J
MC78M12C
MC78M12AC
11.50
11.76
12
12
12.50
12.24
Output Voltage Variation
V
O
Vdc
(14.5 Vdc ≤ V ≤ 27 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
MC78M12C
MC78M12AC
11.4
11.5
–
–
–
12.6
12.5
50
Line Regulation
Reg
8.0
mV
mV
line
(T = 25°C, 14.5 Vdc ≤ V ≤ 30 Vdc, I = 200 mA)
J
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
–
25
10
240
120
6.0
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
IB
3.2
mA
mA
J
Quiescent Current Change
∆I
IB
(14.5 Vdc ≤ V ≤ 30 Vdc, I = 200 mA)
–
–
–
–
0.8
0.5
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
–
75
–
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 15 V ≤V ≤ 25 V)
55
55
–
–
80
2.0
–
–
–
O
I
(I = 300 mA, f = 120 Hz, 15 V ≤V ≤ 25 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.3
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
4. T = 0°C for MC78MxxAC, C
T
high
= +125°C for MC78MxxAB, AC, B, C
low
= –40°C for MC78MxxAB, B
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4
MC78M00, MC78M00A Series
MC78M15C/AC/B/AB ELECTRICAL CHARACTERISTICS (V = 23 V, I = 350 mA, T = T to T , P ≤ 5.0 W,
I
O
J
low
high
D
unless otherwise noted.) (Note 5)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
O
Vdc
J
MC78M15C
MC78M15AC
14.4
14.7
15
15
15.6
15.3
Output Voltage Variation
V
O
Vdc
(17.5 Vdc ≤ V ≤ 30 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
MC78M15C
MC78M15AC
14.25
14.40
–
–
–
15.75
15.60
50
Input Regulation
Reg
10
mV
mV
line
(T = 25°C, 17.5 Vdc ≤ V ≤ 30 Vdc, I = 200 mA)
J
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
–
25
10
300
150
6.0
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
IB
3.2
mA
mA
J
Quiescent Current Change
∆I
IB
(17.5 Vdc ≤ V ≤ 30 Vdc, I = 200 mA)
–
–
–
–
–
0.8
0.5
–
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
90
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 18.5 V ≤ V ≤ 28.5 V)
54
54
–
70
–
–
O
I
(I = 300 mA, f = 120 Hz, 18.5 V ≤ V ≤ 28.5 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
–
2.0
–
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.3
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
MC78M18C ELECTRICAL CHARACTERISTICS (V = 27 V, I = 350 mA, 0°C < T < 125°C, P ≤ 5.0 W, unless otherwise noted.)
I
O
J
D
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
V
17.3
17.1
18
–
18.7
18.9
Vdc
Vdc
J
O
Output Voltage Variation
O
(21 Vdc ≤ V ≤ 33 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
Line Regulation
(T = 25°C, 21 Vdc ≤ V ≤ 33 Vdc, I = 200 mA)
J
Reg
–
10
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
–
30
10
360
180
6.5
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
IB
3.2
mA
mA
J
Quiescent Current Change
∆I
IB
(21 Vdc ≤ V ≤ 33 Vdc, I = 200 mA)
–
–
–
–
–
0.8
0.5
–
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
100
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 22 V ≤ V ≤ 32 V)
53
53
–
70
–
–
O
I
(I = 300 mA, f = 120 Hz, 22 V ≤ V ≤ 32 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
–
2.0
–
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.3
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
5. T = 0°C for MC78MxxAC, C
T
high
= +125°C for MC78MxxAB, AC, B, C
low
= –40°C for MC78MxxAB, B
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5
MC78M00, MC78M00A Series
MC78M20C ELECTRICAL CHARACTERISTICS (V = 29 V, I = 350 mA, 0°C < T < 125°C, P ≤ 5.0 W, unless otherwise noted.)
I
O
J
D
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
V
19.2
19
20
–
20.8
21
Vdc
Vdc
J
O
Output Voltage Variation
O
(23 Vdc ≤ V ≤ 35 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
Line Regulation
(T = 25°C, 23 Vdc ≤ V ≤ 35 Vdc, I = 200 mA)
J
Reg
–
10
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
30
10
400
200
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
–
3.2
6.5
mA
mA
J
IB
Quiescent Current Change
∆I
IB
(23 Vdc ≤ V ≤ 35 Vdc, I = 200 mA)
–
–
–
–
0.8
0.5
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
–
110
–
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 24 V ≤ V ≤ 34 V)
52
52
–
70
–
–
O
I
(I = 300 mA, f = 120 Hz, 24 V ≤ V ≤ 34 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
–
2.0
–
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C, V = 35 V)
I
OS
–
–
50
–
–
mA
J
I
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.5
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
MC78M24C ELECTRICAL CHARACTERISTICS (V = 33 V, I = 350 mA, 0°C < T < 125°C, P ≤ 5.0 W, unless otherwise noted.)
I
O
J
D
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T = 25°C)
V
V
23
24
–
25
Vdc
Vdc
J
O
Output Voltage Variation
22.8
25.2
O
(27 Vdc ≤ V ≤ 38 Vdc, 5.0 mA ≤ I ≤ 350 mA)
I
O
Line Regulation
(T = 25°C, 27 Vdc ≤ V ≤ 38 Vdc, I = 200 mA)
J
Reg
–
10
50
mV
mV
line
I
O
Load Regulation
Reg
load
(T = 25°C, 5.0 mA ≤ I ≤ 500 mA)
–
–
30
10
480
240
J
O
(T = 25°C, 5.0 mA ≤ I ≤ 200 mA)
J
O
Input Bias Current (T = 25°C)
I
–
3.2
7.0
mA
mA
J
IB
Quiescent Current Change
∆I
IB
(27 Vdc ≤ V ≤ 38 Vdc, I = 200 mA)
–
–
–
–
0.8
0.5
I
O
(5.0 mA ≤ I ≤ 350 mA)
O
Output Noise Voltage (T = 25°C, 10 Hz ≤ f ≤ 100 kHz)
V
n
–
170
–
µV
A
Ripple Rejection
RR
dB
(I = 100 mA, f = 120 Hz, 28 V ≤ V ≤ 38 V)
50
50
–
70
–
–
O
I
(I = 300 mA, f = 120 Hz, 28 V ≤ V ≤ 38 V, T = 25°C)
O
I
J
Dropout Voltage
V –V
–
2.0
–
Vdc
I
O
(T = 25°C)
J
Short Circuit Current Limit (T = 25°C)
I
–
–
50
–
–
mA
J
OS
Average Temperature Coefficient of Output Voltage
∆V /∆T
±0.5
mV/°C
O
(I = 5.0 mA)
O
Peak Output Current
I
O
–
700
–
mA
(T = 25°C)
J
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6
MC78M00, MC78M00A Series
DEFINITIONS
Line Regulation – The change in output voltage for a
Input Bias Current – That part of the input current that
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.
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.
Load Regulation – The change in output voltage for a
change in load current at constant chip temperature.
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.
Maximum Power Dissipation – The maximum total
device dissipation for which the regulator will operate
within specifications.
2.4
100
P
for T = 50°C
D(max)
A
Free Air
Mounted
Vertically
2.0
90
80
70
60
50
40
2.0 oz. Copper
1.6
L
Minimum
Size Pad
1.2
L
0.8
0.4
0
R
θ
JA
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
Figure 2. DPAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
10
Infinite Heat
Sink
θ
= 10°C/W
HS
5.0
θ
= 20°C/W
3.0
2.0
HS
No Heat Sink
1.0
0.5
0.3
0.2
θ
P
= 5°C/W
= 7.52 W
D(max)
JC
0.1
25
50
75
100
125
150
T , AMBIENT TEMPERATURE (°C)
A
Figure 3. Worst Case Power Dissipation
versus Ambient Temperature (TO–220)
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7
MC78M00, MC78M00A Series
2.5
2.0
1.5
1.0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
T = 25°C
J
I = 500 mA
O
I = 100 mA
O
T = 125°C
J
I = 10 mA
O
0.5
0
∆V = 100 mV
O
0
5.0
10
15
20
25
30
35
40
0
25
50
75
100
125
150
V - V , DROPOUT VOLTAGE (V)
I O
T , JUNCTION TEMPERATURE (°C)
J
Figure 4. Peak Output Current versus
Dropout Voltage
Figure 5. Dropout Voltage versus
Junction Temperature
100
100
80
60
40
20
I
= 500 mA
out
80
60
I
= 500 mA
= 5.0 V
out
V
= 5.0 V
V = 10 V
out
V
out
V = 10 V
C = 0
O
in
C = 0
in
O
f = 120 Hz
T = 25°C
J
T = 25°C
J
40
30
1.0
10
100
1.0 k 10 k 100 k 1.0 M 10 M 100 M
f, FREQUENCY (Hz)
0.01
0.1
0.5 1.0
10
I , OUTPUT CURRENT (A)
O
Figure 6. Ripple Rejection versus Frequency
Figure 7. Ripple Rejection versus Output Current
5.0
4.0
3.0
2.0
1.0
0
4.0
T = 25°C
J
T = 25°C
J
3.0
2.0
T = 125°C
J
T = 125°C
J
T = 25°C
J
V = 5.0 V
O
I = 0.5 A
1.0
0
O
V -V = 5.0 V
I O
T = 125°C
J
0
5.0
10
15
20
25
30
35
40
0.01
0.1
0.5 1.0
10
V , INPUT VOLTAGE (Vdc)
I
I , OUTPUT CURRENT (A)
O
Figure 8. Bias Current versus Input Voltage
Figure 9. Bias Current versus Output Current
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8
MC78M00, MC78M00A Series
APPLICATIONS INFORMATION
Design Considerations
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 µF 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.
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
V , 7.0 V to 20 V
O
V -V ≥ 2.0 V
in out
MC78M05C
Input
R
0.33 µF
Constant
Current to
Grounded
Load
Output
MC78M05C
Input
I
O
7
2
3
*
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:
0.33 µF
0.1 µF
6
10 k
+
1.0 k
4
MC1741
5.0 V
R
I
O
=
+ I
IB
I
IB
= 1.5 mA over line and load changes.
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.
For example, a 500 mA current source would require R to be a
5.0ĂΩ, 10 W resistor and the output voltage compliance would
be the input voltage less 7.0 V.
Figure 10. Current Regulator
Figure 11. Adjustable Output Regulator
MJ2955
or Equiv.
MJ2955 or Equiv.
R
SC
Input
Input
R
2N6049
or Equiv.
MC78MXXC
Output
R
MC78MXXC
1.0 µF
1.0 µF
Output
1.0 µF
XX = 2 digits of type number indicating voltage.
XX = 2 digits of type number indicating voltage.
The circuit of Figure 12 can be modified to provide supply protection
against short circuits by adding a short circuit sense resistor, R ,
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.
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 V of the PNP determines when the pass
sc
BE
transistor begins conducting; this circuit is not short circuit
proof. Input-output differential voltage minimum is increased
by V of the pass transistor.
BE
Figure 12. Current Boost Regulator
Figure 13. Current Boost with
Short Circuit Protection
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9
MC78M00, MC78M00A Series
ORDERING INFORMATION
Shipping
Tape & Reel
Rails
(No Suffix)
(RK Suffix)
Device
Output Voltage
Temperature Range
Package
MC78M05CDT/RK
MC78M05ACDT/RK
MC78M05CT
DPAK
75 Units/Rail
50 Units/Rail
2500 Units/Reel
T = 0° to +125°C
J
TO–220
–
MC78M05ACT
MC78M05ABDT/RK
MC78M05ABT
MC78M05BDT/RK
MC78M05BT
5.0 V
DPAK
TO–220
DPAK
75 Units/Rail
50 Units/Rail
75 Units/Rail
50 Units/Rail
75 Units/Rail
2500 Units/Reel
–
T = –40° to +125°C
J
2500 Units/Reel
–
TO–220
DPAK
MC78M06CDT/RK
MC78M06CT
2500 Units/Reel
T = 0° to +125°C
J
6.0 V
TO–220
DPAK
50 Units/Rail
75 Units/Rail
50 Units/Rail
–
MC78M06BT
T = –40° to +125°C
J
MC78M08CDT/RK
MC78M08ACDT/RK
MC78M08CT
2500 Units/Reel
–
T = 0° to +125°C
J
TO–220
MC78M08ACT
MC78M08ABDT/RK
MC78M08ABT
MC78M08BDT/RK
MC78M08BT
8.0 V
DPAK
TO–220
DPAK
75 Units/Rail
50 Units/Rail
75 Units/Rail
50 Units/Rail
75 Units/Rail
50 Units/Rail
75 Units/Rail
50 Units/Rail
2500 Units/Reel
–
T = –40° to +125°C
J
2500 Units/Reel
TO–220
DPAK
–
MC78M09CDT/RK
MC78M09CT
2500 Units/Reel
T = 0° to +125°C
J
TO–220
DPAK
–
9.0 V
MC78M09BDT/RK
MC78M09BT
2500 Units/Reel
–
T = –40° to +125°C
J
TO–220
MC78M12CDT/RK
MC78M12ACDT/RK
MC78M12CT
DPAK
75 Units/Rail
50 Units/Rail
2500 Units/Reel
–
T = 0° to +125°C
J
TO–220
MC78M12ACT
MC78M12ABDT/RK
MC78M12ABT
MC78M12BDT/RK
MC78M12BT
12 V
DPAK
TO–220
DPAK
75 Units/Rail
50 Units/Rail
75 Units/Rail
50 Units/Rail
2500 Units/Reel
–
T = –40° to +125°C
J
2500 Units/Reel
–
TO–220
MC78M15CDT/RK
MC78M15ACDT/RK
MC78M15CT
DPAK
75 Units/Rail
50 Units/Rail
2500 Units/Reel
–
T = 0° to +125°C
J
TO–220
MC78M15ACT
MC78M15ABDT/RK
MC78M15ABT
MC78M15BDT/RK
MC78M15BT
15 V
DPAK
TO–220
DPAK
75 Units/Rail
50 Units/Rail
75 Units/Rail
50 Units/Rail
75 Units/Rail
2500 Units/Reel
–
T = –40° to +125°C
J
2500 Units/Reel
TO–220
DPAK
MC78M18CDT
MC78M18CT
T = 0° to +125°C
J
18 V
MC78M18BT
T = –40° to +125°C
J
–
MC78M20CT
T = 0° to +125°C
J
20 V
24 V
TO–220
50 Units/Rail
MC78M20BT
T = –40° to +125°C
J
MC78M24CT
T = 0° to +125°C
J
MC78M24BT
T = –40° to +125°C
J
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10
MC78M00, MC78M00A Series
PACKAGE DIMENSIONS
TO–220
T SUFFIX
CASE 221A–09
ISSUE AA
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
SEATING
PLANE
–T–
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION Z DEFINES A ZONE WHERE ALL
BODY AND LEAD IRREGULARITIES ARE
ALLOWED.
C
B
F
T
S
4
1
INCHES
DIM MIN MAX
MILLIMETERS
MIN
14.48
9.66
4.07
0.64
3.61
2.42
2.80
0.46
12.70
1.15
4.83
2.54
2.04
1.15
5.97
0.00
1.15
---
MAX
15.75
10.28
4.82
0.88
3.73
2.66
3.93
0.64
14.27
1.52
5.33
3.04
2.79
1.39
6.47
1.27
---
A
K
Q
Z
A
B
C
D
F
0.570
0.380
0.160
0.025
0.142
0.095
0.110
0.018
0.500
0.045
0.190
0.100
0.080
0.045
0.235
0.000
0.045
---
0.620
0.405
0.190
0.035
0.147
0.105
0.155
0.025
0.562
0.060
0.210
0.120
0.110
0.055
0.255
0.050
---
2
3
U
H
G
H
J
K
L
L
R
N
Q
R
S
T
V
J
G
D
U
V
Z
N
0.080
2.04
DPAK
DT SUFFIX
CASE 369A–13
ISSUE Z
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
SEATING
PLANE
–T–
C
B
R
INCHES
DIM MIN MAX
MILLIMETERS
E
V
MIN
5.97
6.35
2.19
0.69
0.84
0.94
MAX
6.35
6.73
2.38
0.88
1.01
1.19
A
B
C
D
E
F
0.235
0.250
0.086
0.027
0.033
0.037
0.250
0.265
0.094
0.035
0.040
0.047
4
2
Z
A
K
S
1
3
G
H
J
0.180 BSC
4.58 BSC
U
0.034
0.018
0.102
0.040
0.023
0.114
0.87
0.46
2.60
1.01
0.58
2.89
K
L
0.090 BSC
2.29 BSC
F
J
R
S
U
V
Z
0.175
0.020
0.020
0.030
0.138
0.215
0.050
---
0.050
---
4.45
0.51
0.51
0.77
3.51
5.46
1.27
---
1.27
---
L
H
D 2 PL
M
G
0.13 (0.005)
T
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11
MC78M00, MC78M00A Series
ON Semiconductor and
are 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.
PUBLICATION ORDERING INFORMATION
Literature Fulfillment:
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Phone: 81–3–5740–2700
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For additional information, please contact your local
Sales Representative.
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MC78M00/D
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