MC7808CT1 [ONSEMI]
8V FIXED POSITIVE REGULATOR, PSFM3, TO-220, 3 PIN;
| 型号： | MC7808CT1 |
| 厂家： | 
ONSEMI |
| 描述： | 8V FIXED POSITIVE REGULATOR, PSFM3, TO-220, 3 PIN 局域网 输出元件 调节器 |
| 文件： | 总20页 (文件大小：377K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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 they can deliver output currents in excess of
1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.
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TO–220
T SUFFIX
CASE 221A
• Output Current in Excess of 1.0 A
• No External Components Required
Heatsink surface
connected to Pin 2.
1
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe–Area Compensation
• Output Voltage Offered in 2% and 4% Tolerance
2
3
2
Pin 1. Input
2. Ground
3. Output
D PAK
D2T SUFFIX
CASE 936
2
2
• Available in Surface Mount D PAK and Standard 3–Lead Transistor
1
3
Packages
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
MAXIMUM RATINGS (T = 25°C, unless otherwise noted.)
A
Rating
Symbol
Value
Unit
STANDARD APPLICATION
Input Voltage (5.0 – 18 V)
Input Voltage (24 V)
V
I
35
40
Vdc
MC78XX
Input
Output
C **
Power Dissipation
Case 221A
C *
in
0.33 µF
O
T
= 25°C
P
D
Internally
Limited
W
A
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
R
R
65
5.0
°C/W
°C/W
θJA
θJC
A common ground is required between the
input and the output voltages. The input voltage
must remain typically 2.0 V above the output
voltage even during the low point on the input
ripple voltage.
2
Case 936 (D PAK)
= 25°C
T
P
Internally
Limited
W
A
D
XX,
These two digits of the type number
indicate nominal voltage.
Thermal Resistance, Junction–to–Ambient
R
See
Figure
13
°C/W
θJA
* C is required if regulator is located an
in
Thermal Resistance, Junction–to–Case
Storage Junction Temperature Range
R
5.0
°C/W
°C
appreciable distance from power supply
filter.
θJA
T
–65 to
+150
stg
** C is not needed for stability; however,
O
it does improve transient response. Values
Operating Junction Temperature
T
J
+150
°C
of less than 0.1 µF could cause instability.
NOTE: ESD data available upon request.
ORDERING INFORMATION
Seedetailedorderingandshippinginformationinthepackage
dimensions section on page 16 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 18 of this data sheet.
Semiconductor Components Industries, LLC, 2000
1
Publication Order Number:
April, 2000 – Rev. 6
MC7800/D
MC7800, MC7800A, LM340, LM340A Series
Representative Schematic Diagram
V
in
MC7800
R24
50
D2
Zener
LAT 3 A
Q18
LAT
Q17
R19
27.5 k
Q19
QNPN
Q20
QNPN
C3 1.0 P
R14
1.0 k
Q10
QNPN
R15
680
R18
100 k
R21
600
R23
0.2
R22
100
V
out
5.01
Q7
QNPN
Q5
QNPN 2
R30
18 k
R17
9.0 k
Q12
QNPN
Sense
Q9
QNPN 2
Q6
QNPN
R12
3.0 k
R29
9.0 k
R11
15 k
D1
Zener
Q15
QNPN
R25
6.0 k
R28
9.0 k
R1
10.66 k
R10
R16
600
R20
17500
3340–(3316ACT)
R26
3.0 k
R27
9.0 k
Q8
QNPN
R2
1.56 k
R9
3.0 k
R13
R5
4.5 k
11660
SUB
Q14
QNPN
Q11 2
Q1
C1
30 P
C2
3.0 P
N+
QNPN 6
Q4
QNPN
Q13
QNPN
Q3
QNPN
Q2
R3
Q16
QNPN 4
R6
1.0 k
Diode
R7
14 k
R8
5.0 k
1.8 k
This device contains 22 active transistors.
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2
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (V = 10 V, I = 500 mA, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7805B
Typ
MC7805C/LM340T–5
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
V
4.8
5.0
5.2
4.8
5.0
5.2
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P
O
D
O
≤ 15 W)
7.0 Vdc ≤ V ≤ 20 Vdc
in
–
4.75
–
5.0
–
5.25
4.75
–
5.0
–
5.25
–
8.0 Vdc ≤ V ≤ 20 Vdc
in
Line Regulation (Note 2.)
7.5 Vdc ≤ V ≤ 20 Vdc, 1.0 A
in
Reg
mV
mV
line
–
–
5.0
1.3
100
50
–
–
0.5
0.8
20
10
8.0 Vdc ≤ V ≤ 12 Vdc
in
Load Regulation (Note 2.)
Reg
load
5.0 mA ≤ I ≤ 1.0 A
–
–
1.3
0.15
100
50
–
–
1.3
1.3
25
25
O
5.0 mA ≤ I ≤ 1.5 A (T = 25°C)
O
A
Quiescent Current
I
–
3.2
8.0
–
3.2
6.5
mA
mA
B
Quiescent Current Change
7.0 Vdc ≤ V ≤ 25 Vdc
∆I
B
–
–
–
–
–
0.5
–
–
0.3
0.08
1.0
0.8
in
5.0 mA ≤ I ≤ 1.0 A (T = 25°C)
O
A
Ripple Rejection
RR
–
68
–
62
83
–
dB
8.0 Vdc ≤ V ≤ 18 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
0.9
0.2
–
–
–
–
0.9
0.6
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of
Output Voltage
TCV
–0.3
–0.3
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 10 V, I = 1.0 A, T = T
in
to T
[Note 1.], unless otherwise noted.)
high
O
J
low
MC7805AC/LM340AT–5
Characteristic
Symbol
Min
Typ
5.0
5.0
Max
Unit
Vdc
Vdc
Output Voltage (T = 25°C)
V
V
4.9
4.8
5.1
5.2
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
O
D
O
7.5 Vdc ≤ V ≤ 20 Vdc
in
Line Regulation (Note 2.)
Reg
mV
line
7.5 Vdc ≤ V ≤ 25 Vdc, I = 500 mA
in
–
–
–
–
0.5
0.8
1.3
4.5
10
12
4.0
10
O
8.0 Vdc ≤ V ≤ 12 Vdc, I = 1.0 A
in
O
8.0 Vdc ≤ V ≤ 12 Vdc, I = 1.0 A, T = 25°C
in
O
J
J
7.3 Vdc ≤ V ≤ 20 Vdc, I = 1.0 A, T = 25°C
in
O
Load Regulation (Note 2.)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
1.3
0.8
0.53
25
25
15
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
–
3.2
6.0
mA
mA
B
Quiescent Current Change
∆I
B
8.0 Vdc ≤ V ≤ 25 Vdc, I = 500 mA
in
–
–
–
0.3
–
0.08
0.8
0.8
0.5
O
7.5 Vdc ≤ V ≤ 20 Vdc, T = 25°C
in
J
5.0 mA ≤ I ≤ 1.0 A
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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3
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued) (V = 10 V, I = 1.0 A, T = T
otherwise noted.)
to T
[Note 1.], unless
in
O
J
low
high
MC7805AC/LM340AT–5
Characteristic
Symbol
Min
68
Typ
Max
Unit
Ripple Rejection
RR
83
–
dB
8.0 Vdc ≤ V ≤ 18 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
r
–
–
0.9
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.3
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 11 V, I = 500 mA, T = T
to T
[Note 1.], unless otherwise noted.)
in
O
J
low
high
MC7806B
Typ
MC7806C
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
V
5.75
6.0
6.25
5.75
6.0
6.25
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
O
D
O
8.0 Vdc ≤ V ≤ 21 Vdc
9.0 Vdc ≤ V ≤ 21 Vdc
in
–
5.7
–
6.0
–
6.3
5.7
–
6.0
–
6.3
–
in
Line Regulation, T = 25°C (Note 2.)
Reg
mV
mV
J
line
8.0 Vdc ≤ V ≤ 25 Vdc
–
–
5.5
1.4
120
60
–
–
0.5
0.8
24
12
in
9.0 Vdc ≤ V ≤ 13 Vdc
in
Load Regulation, T = 25°C (Note 2.)
Reg
–
1.3
120
–
1.3
30
J
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current (T = 25°C)
I
–
3.3
8.0
–
3.3
8.0
mA
mA
J
B
Quiescent Current Change
∆I
B
8.0 Vdc ≤ V ≤ 25 Vdc
in
–
–
–
–
–
0.5
–
–
0.3
0.08
1.3
0.5
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
–
65
–
58
65
–
dB
9.0 Vdc ≤ V ≤ 19 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
0.9
0.2
–
–
–
–
0.9
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output
Voltage
TCV
–0.3
–0.3
mV/°C
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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4
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (V = 11 V, I = 1.0 A, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7806AC
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
5.88
5.76
Typ
6.0
6.0
Max
6.12
6.24
Unit
Vdc
Vdc
V
V
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
O
D
O
8.6 Vdc ≤ V ≤ 21 Vdc
in
Line Regulation (Note 2.)
8.6 Vdc ≤ V ≤ 25 Vdc, I = 500 mA
in
Reg
mV
mV
line
–
–
5.0
1.4
12
15
O
O
9.0 Vdc ≤ V ≤ 13 Vdc, I = 1.0 A
in
Load Regulation (Note 2.)
Reg
load
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
1.3
0.9
0.2
25
25
15
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
–
3.3
6.0
mA
mA
B
Quiescent Current Change
∆I
B
9.0 Vdc ≤ V ≤ 25 Vdc, I = 500 mA
in
–
–
–
–
–
–
0.8
0.8
0.5
O
9.0 Vdc ≤ V ≤ 21 Vdc, I = 1.0 A, T = 25°C
in
O
J
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
58
65
–
dB
9.0 Vdc ≤ V ≤ 19 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
r
–
–
0.9
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.3
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 14 V, I = 500 mA, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7808B
Typ
MC7808C
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
7.7
8.0
8.3
7.7
8.0
8.3
J
O
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
V
O
D
10.5 Vdc ≤ V ≤ 23 Vdc
11.5 Vdc ≤ V ≤ 23 Vdc
in
–
7.6
–
8.0
–
8.4
7.6
–
8.0
–
8.4
–
in
Line Regulation, T = 25°C, (Note 2.)
Reg
mV
mV
J
line
10.5 Vdc ≤ V ≤ 25 Vdc
–
–
6.0
1.7
160
80
–
–
6.0
1.7
32
16
in
11 Vdc ≤ V ≤ 17 Vdc
in
Load Regulation, T = 25°C (Note 2.)
Reg
–
1.4
160
–
1.4
35
J
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current
I
–
3.3
8.0
–
3.3
8.0
mA
mA
B
Quiescent Current Change
∆I
B
10.5 Vdc ≤ V ≤ 25 Vdc
in
–
–
–
–
–
0.5
–
–
–
–
1.0
0.5
5.0 mA ≤ I ≤ 1.0 A
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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5
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued) (V = 14 V, I = 500 mA, T = T
otherwise noted.)
to T [Note 1.], unless
high
in
O
J
low
MC7808B
Typ
MC7808C
Characteristic
Symbol
Min
Max
Min
56
Typ
Max
Unit
Ripple Rejection
11.5 Vdc ≤ V ≤ 18 Vdc, f = 120 Hz
in
RR
–
62
–
62
–
dB
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
0.9
0.2
–
–
–
–
0.9
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.4
–0.4
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 14 V, I = 1.0 A, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7808AC
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
7.84
7.7
Typ
8.0
8.0
Max
Unit
Vdc
Vdc
V
8.16
8.3
J
O
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
V
O
D
10.6 Vdc ≤ V ≤ 23 Vdc
in
Line Regulation (Note 2.)
Reg
mV
line
10.6 Vdc ≤ V ≤ 25 Vdc, I = 500 mA
in
–
–
–
6.0
1.7
5.0
15
18
15
O
11 Vdc ≤ V ≤ 17 Vdc, I = 1.0 A
in
O
10.4 Vdc ≤ V ≤ 23 Vdc, T = 25°C
in
J
Load Regulation (Note 2.)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
1.4
1.0
0.22
25
25
15
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
–
3.3
6.0
mA
mA
B
Quiescent Current Change
∆I
B
11 Vdc ≤ V ≤ 25 Vdc, I = 500 mA
in
–
–
–
–
–
–
0.8
0.8
0.5
O
10.6 Vdc ≤ V ≤ 23 Vdc, I = 1.0 A, T = 25°C
in
O
J
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
56
62
–
dB
11.5 Vdc ≤ V ≤ 21.5 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
0.9
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
= 35 Vdc
in
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.4
mV/°C
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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6
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (V = 15 V, I = 500 mA, T = T
in
to T
[Note 1.], unless otherwise noted.)
high
O
J
low
MC7809BT
Typ
MC7809CT
Typ
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Max
Unit
Vdc
Vdc
V
V
8.65
9.0
9.35
8.65
9.0
9.35
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
O
D
O
11.5 Vdc ≤ V ≤ 24 Vdc
in
8.55
9.0
9.45
8.55
9.0
9.45
Line Regulation, T = 25°C (Note 2.)
Reg
mV
mV
J
line
11 Vdc ≤ V ≤ 26 Vdc
–
–
6.2
1.8
32
16
–
–
6.2
1.8
32
16
in
11.5 Vdc ≤ V ≤ 17 Vdc
in
Load Regulation, T = 25°C (Note 2.)
Reg
–
1.5
35
–
1.5
35
J
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current
I
–
3.4
8.0
–
3.4
8.0
mA
mA
B
Quiescent Current Change
∆I
B
11.5 Vdc ≤ V ≤ 26 Vdc
in
–
–
–
–
1.0
0.5
–
–
–
–
1.0
0.5
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
56
61
–
56
61
–
dB
11.5 Vdc ≤ V ≤ 21.5 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.0
0.2
–
–
–
–
1.0
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.5
–0.5
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 19 V, I = 500 mA, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7812B
Typ
MC7812C/LM340T–12
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
V
11.5
12
12.5
11.5
12
12.5
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
O
D
O
14.5 Vdc ≤ V ≤ 27 Vdc
15.5 Vdc ≤ V ≤ 27 Vdc
in
–
11.4
–
12
–
12.6
11.4
–
12
–
12.6
–
in
Line Regulation, T = 25°C (Note 2.)
Reg
mV
J
line
14.5 Vdc ≤ V ≤ 30 Vdc
16 Vdc ≤ V ≤ 22 Vdc
in
–
–
–
7.5
2.2
–
240
120
–
–
–
–
3.8
0.3
–
24
24
48
in
14.8 Vdc ≤ V ≤ 27 Vdc, I = 1.0 A
in
O
Load Regulation, T = 25°C (Note 2.)
Reg
–
1.6
240
–
8.1
60
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current
I
–
3.4
8.0
–
3.4
6.5
mA
mA
B
Quiescent Current Change
∆I
B
14.5 Vdc ≤ V ≤ 30 Vdc, I = 1.0 A, T = 25°C
15 Vdc ≤ V ≤ 30 Vdc
in
–
–
–
–
–
–
–
1.0
0.5
–
–
–
–
–
–
0.7
0.8
0.5
in
O
J
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
–
60
–
55
60
–
dB
15 Vdc ≤ V ≤ 25 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
I O
–
2.0
–
–
2.0
–
Vdc
O
J
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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7
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued) (V = 19 V, I = 500 mA, T = T
otherwise noted.)
to T [Note 1.], unless
high
in
O
J
low
MC7812B
Typ
MC7812C/LM340T–12
Characteristic
Symbol
Min
Max
Min
Typ
Max
Unit
µV/V
Output Noise Voltage (T = 25°C)
V
n
–
10
–
–
10
–
A
O
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.1
0.2
–
–
–
–
1.1
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.8
–0.8
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 19 V, I = 1.0 A, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7812AC/LM340AT–12
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
11.75
11.5
Typ
12
Max
Unit
Vdc
Vdc
V
V
12.25
12.5
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
12
O
D
O
14.8 Vdc ≤ V ≤ 27 Vdc
in
Line Regulation (Note 2.)
Reg
mV
line
14.8 Vdc ≤ V ≤ 30 Vdc, I = 500 mA
in
–
–
–
3.8
2.2
6.0
18
20
120
O
16 Vdc ≤ V ≤ 22 Vdc, I = 1.0 A
in
O
14.5 Vdc ≤ V ≤ 27 Vdc, T = 25°C
in
J
Load Regulation (Note 2.)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
–
25
25
O
J
5.0 mA ≤ I ≤ 1.0 A
O
Quiescent Current
I
–
3.4
6.0
mA
mA
B
Quiescent Current Change
∆I
B
15 Vdc ≤ V ≤ 30 Vdc, I = 500 mA
–
–
–
–
–
–
0.8
0.8
0.5
in
O
14.8 Vdc ≤ V ≤ 27 Vdc, T = 25°C
in
J
5.0 mA ≤ I ≤ 1.0 A, T = 25°C
O
J
Ripple Rejection
RR
55
60
–
dB
15 Vdc ≤ V ≤ 25 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
r
–
–
1.1
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–0.8
mV/°C
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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8
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (V = 23 V, I = 500 mA, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7815B
Typ
MC7815C/LM340T–15
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
V
14.4
15
15.6
14.4
15
15.6
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
O
D
O
17.5 Vdc ≤ V ≤ 30 Vdc
18.5 Vdc ≤ V ≤ 30 Vdc
in
–
–
15
–
14.25
–
15
–
15.75
–
in
14.25
15.75
Line Regulation, T = 25°C (Note 2.)
Reg
mV
mV
J
line
17.9 Vdc ≤ V ≤ 30 Vdc
–
–
8.5
3.0
300
150
–
–
8.5
3.0
30
28
in
20 Vdc ≤ V ≤ 26 Vdc
in
Load Regulation, T = 25°C (Note 2.)
Reg
–
1.8
300
–
1.8
55
J
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current
I
–
3.5
8.0
–
3.5
6.5
mA
mA
B
Quiescent Current Change
∆I
B
17.5 Vdc ≤ V ≤ 30 Vdc
17.5 Vdc ≤ V ≤ 30 Vdc, I = 1.0 A, T = 25°C
in
–
–
–
–
–
–
–
1.0
0.5
–
–
–
–
–
–
0.8
0.7
0.5
in
O
J
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
–
58
–
54
58
–
dB
18.5 Vdc ≤ V ≤ 28.5 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.2
0.2
–
–
–
–
1.2
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
= 35 Vdc
in
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–1.0
–1.0
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 23 V, I = 1.0 A, T = T
in
to T
[Note 1.], unless otherwise noted.)
high
O
J
low
MC7815AC/LM340AT–15
Characteristic
Symbol
Min
Typ
15
Max
Unit
Vdc
Vdc
Output Voltage (T = 25°C)
V
14.7
14.4
15.3
15.6
J
O
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
V
15
O
D
17.9 Vdc ≤ V ≤ 30 Vdc
in
Line Regulation (Note 2.)
Reg
mV
line
17.9 Vdc ≤ V ≤ 30 Vdc, I = 500 mA
20 Vdc ≤ V ≤ 26 Vdc
in
–
–
–
8.5
3.0
7.0
20
22
20
in
O
17.5 Vdc ≤ V ≤ 30 Vdc, I = 1.0 A, T = 25°C
in
O
J
Load Regulation (Note 2.)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
1.8
1.5
1.2
25
25
15
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
–
3.5
6.0
mA
mA
B
Quiescent Current Change
∆I
B
17.5 Vdc ≤ V ≤ 30 Vdc, I = 500 mA
–
–
–
–
–
–
0.8
0.8
0.5
in
O
17.5 Vdc ≤ V ≤ 30 Vdc, I = 1.0 A, T = 25°C
in
O
J
5.0 mA ≤ I ≤ 1.0 A
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
http://onsemi.com
9
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued) (V = 23 V, I = 1.0 A, T = T
otherwise noted.)
to T
[Note 1.], unless
in
O
J
low
high
MC7815AC/LM340AT–15
Characteristic
Symbol
Min
60
Typ
Max
Unit
Ripple Rejection
RR
80
–
dB
18.5 Vdc ≤ V ≤ 28.5 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.2
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
= 35 Vdc
in
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–1.0
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 27 V, I = 500 mA, T = T
in
to T
[Note 1.], unless otherwise noted.)
O
J
low
high
MC7818B
Typ
MC7818C
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
17.3
18
18.7
17.3
18
18.7
J
O
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
V
O
D
21 Vdc ≤ V ≤ 33 Vdc
in
–
17.1
–
18
–
18.9
17.1
–
18
–
18.9
–
22 Vdc ≤ V ≤ 33 Vdc
in
Line Regulation, (Note 2.)
21 Vdc ≤ V ≤ 33 Vdc
in
Reg
mV
mV
line
–
–
9.5
3.2
360
180
–
–
9.5
3.2
50
25
24 Vdc ≤ V ≤ 30 Vdc
in
Load Regulation, (Note 2.)
Reg
–
2.0
360
–
2.0
55
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current
I
–
3.5
8.0
–
3.5
6.5
mA
mA
B
Quiescent Current Change
21 Vdc ≤ V ≤ 33 Vdc
∆I
B
–
–
–
–
–
0.5
–
–
–
–
1.0
0.5
in
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
–
57
–
53
57
–
dB
22 Vdc ≤ V ≤ 33 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
iI O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.3
0.2
–
–
–
–
1.3
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–1.5
–1.5
mV/°C
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
http://onsemi.com
10
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (V = 27 V, I = 1.0 A, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7818AC
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
17.64
17.3
Typ
18
Max
18.36
18.7
Unit
Vdc
Vdc
V
V
J
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
18
O
D
O
21 Vdc ≤ V ≤ 33 Vdc
in
Line Regulation (Note 2.)
Reg
mV
line
21 Vdc ≤ V ≤ 33 Vdc, I = 500 mA
in
–
–
–
–
9.5
3.2
3.2
8.0
22
25
10.5
22
O
24 Vdc ≤ V ≤ 30 Vdc, I = 1.0 A
in
O
24 Vdc ≤ V ≤ 30 Vdc, I = 1.0 A, T = 25°C
in
O
J
20.6 Vdc ≤ V ≤ 33 Vdc, I = 1.0 A, T = 25°C
in
O
J
Load Regulation (Note 2.)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
2.0
1.8
1.5
25
25
15
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
–
3.5
6.0
mA
mA
B
Quiescent Current Change
∆I
B
21 Vdc ≤ V ≤ 33 Vdc, I = 500 mA
in
–
–
–
–
–
–
0.8
0.8
0.5
O
21.5 Vdc ≤ V ≤ 30 Vdc, T = 25°C
in
J
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
53
57
–
dB
22 Vdc ≤ V ≤ 32 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.3
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–1.5
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 33 V, I = 500 mA, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7824B
Typ
MC7824C
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
Max
Min
Typ
Max
Unit
Vdc
Vdc
V
23
24
25
23
24
25
J
O
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
V
O
D
27 Vdc ≤ V ≤ 38 Vdc
in
–
22.8
–
24
–
25.2
22.8
–
24
–
25.2
–
28 Vdc ≤ V ≤ 38 Vdc
in
Line Regulation, (Note 2.)
27 Vdc ≤ V ≤ 38 Vdc
in
Reg
mV
mV
line
–
–
11.5
3.8
480
240
–
–
2.7
2.7
60
48
30 Vdc ≤ V ≤ 36 Vdc
in
Load Regulation, (Note 2.)
Reg
–
2.1
480
–
4.4
65
load
5.0 mA ≤ I ≤ 1.5 A
O
Quiescent Current
I
–
3.6
8.0
–
3.6
6.5
mA
mA
B
Quiescent Current Change
∆I
B
27 Vdc ≤ V ≤ 38 Vdc
–
–
–
–
–
0.5
–
–
–
–
1.0
0.5
in
5.0 mA ≤ I ≤ 1.0 A
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
http://onsemi.com
11
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued) (V = 33 V, I = 500 mA, T = T
otherwise noted.)
to T [Note 1.], unless
high
in
O
J
low
MC7824B
Typ
MC7824C
Characteristic
Symbol
Min
Max
Min
Typ
Max
Unit
Ripple Rejection
RR
–
54
–
50
54
–
dB
28 Vdc ≤ V ≤ 38 Vdc, f = 120 Hz
in
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
r
–
–
1.4
0.2
–
–
–
–
1.4
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–2.0
–2.0
mV/°C
O
ELECTRICAL CHARACTERISTICS (V = 33 V, I = 1.0 A, T = T
in
to T [Note 1.], unless otherwise noted.)
high
O
J
low
MC7824AC
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
23.5
23.2
Typ
24
Max
Unit
Vdc
Vdc
V
24.5
25.8
J
O
O
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
V
24
O
D
27.3 Vdc ≤ V ≤ 38 Vdc
in
Line Regulation (Note 2.)
Reg
mV
line
27 Vdc ≤ V ≤ 38 Vdc, I = 500 mA
in
–
–
–
–
11.5
3.8
3.8
10
25
28
12
25
O
30 Vdc ≤ V ≤ 36 Vdc, I = 1.0 A
in
O
30 Vdc ≤ V ≤ 36 Vdc, T = 25°C
in
J
26.7 Vdc ≤ V ≤ 38 Vdc, I = 1.0 A, T = 25°C
in
O
J
Load Regulation (Note 2.)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
–
–
–
2.1
2.0
1.8
15
25
15
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
–
3.6
6.0
mA
mA
B
Quiescent Current Change
∆I
B
27.3 Vdc ≤ V ≤ 38 Vdc, I = 500 mA
in
–
–
–
–
–
–
0.8
0.8
0.5
O
27 Vdc ≤ V ≤ 38 Vdc, T = 25°C
in
J
5.0 mA ≤ I ≤ 1.0 A
O
Ripple Rejection
RR
45
54
–
dB
28 Vdc ≤ V ≤ 38 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V – V
O
–
–
2.0
10
–
–
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
µV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
r
–
–
1.4
0.2
–
–
mΩ
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
–
–
2.2
–
–
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
–2.0
mV/°C
O
1. T
low
=
=
0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
40°C for MC78XXB
T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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12
MC7800, MC7800A, LM340, LM340A Series
3.0
80
T = –40°C
J
2.5
2.0
1.5
1.0
0.5
0
T = 0°C
J
70
60
50
40
f = 120 Hz
= 20 mA
∆V = 1.0 V(RMS)
in
T = 25°C
J
PART #
V
in
I
O
MC7805C = 10 V
MC7806C = 11 V
MC7808C = 14 V
MC7812C = 19 V
MC7815C = 23 V
MC7818C = 27 V
MC7824C = 33 V
T = 85°C
J
T = 125°C
J
4.0 6.0 8.0
10
12
15
20
25
30
35
40
4.0 6.0 8.0
10 12
14
16
18
20 22
24
V –V , INPUT/OUPUT VOLTAGE DIFFERENTIAL (V)
in out
V , OUTPUT VOLTAGE (V)
O
Figure 1. Peak Output Current as a Function of
Input/Output Differential Voltage (MC78XXC, AC, B)
Figure 2. Ripple Rejection as a Function of
Output Voltages (MC78XXC, AC, B)
80
V = 20 V
in
O
5.0
70
60
50
I
= 5.0 mA
MC78XXB, C, AC
V = 8.0 V to 18 V
in
I
= 500 mA
O
4.9
4.8
f = 120 Hz
T = 25°C
A
40
30
0.01
0.1
1.0
10
–60
–20
20
60
100
140
180
f, FREQUENCY (kHz)
T , JUNCTION TEMPERATURE (°C)
J
Figure 3. Ripple Rejection as a Function of
Frequency (MC78XXC, AC, B)
Figure 4. Output Voltage as a Function of
Junction Temperature (MC7805C, AC, B)
10
6.0
4.0
3.0
2.0
1.0
0
V = 10 V
in
5.0
V = 5.0 V
O
f = 120 Hz
I = 20 mA
L
3.0
2.0
I
= 500 mA
L
O
C = 0 µF
1.0
0.5
0.3
0.2
0.1
4.0
8.0
12
16
20
24
–75
–50
–25
0
25
50
75
100
125
V , OUTPUT VOLTAGE (V)
O
T , JUNCTION TEMPERATURE (°C)
J
Figure 5. Output Impedance as a Function of
Output Voltage (MC78XXC, AC, B)
Figure 6. Quiescent Current as a Function of
Temperature (MC78XXC, AC, B)
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13
MC7800, MC7800A, LM340, LM340A Series
APPLICATIONS INFORMATION
Design Considerations
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 regulators 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 MC7800 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
regulator is connected to the power supply filter with long
MC7805
Input
Output
MC7805
R
0.33 µF
Constant
Current to
Grounded
Load
Input
I
O
7
2
0.33 µF
0.1 µF
6
3
The MC7800 regulators can also be used as a current source when
connected as above. In order to minimize dissipation the MC7805C is
chosen in this application. Resistor R determines the current as follows:
10 k
1.0 k
4
MC1741G
5.0 V
R
I
I
O
B
V = 7.0 V to 20 V
O
IN
V
= V ≥ 2.0 V
O
I
B
3.2 mA over line and load changes.
The addition of an operational amplifier allows adjustment to higher or
intermediate values while retaining regulation characteristics. The
minimumvoltageobtainablewiththisarrangementis2.0Vgreaterthanthe
regulator voltage.
For example, a 1.0 A current source would require R to be a 5.0 Ω,
10 W resistor and the output voltage compliance would be the input
voltage less 7.0 V.
Figure 7. Current Regulator
Figure 8. Adjustable Output Regulator
MJ2955
or Equiv.
MJ2955 or Equiv.
R
SC
R
Source
R
Source
Input
Input
0.33 µF
0.33 µF
R
2N6049
or Equiv.
MC78XX
Output
R
MC78XX
≥ 10 µF
1.0 µF
1.0 µF
Output
≥ 10 µF
1.0 µF
XX = 2 digits of type number indicating voltage.
XX = 2 digits of type number indicating voltage.
The circuit of Figure 9 can be modified to provide supply protection against
The MC7800 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 transistor begins conducting; this
circuitisnotshortcircuitproof.Input/outputdifferentialvoltageminimumis
short circuits by adding a short circuit sense resistor, R , and an
BE
SC
additionalPNPtransistor. The currentsensingPNPmustbe able tohandle
the short circuit current of the three–terminal regulator. Therefore, a
four–ampere plastic power transistor is specified.
increased by V of the pass transistor.
BE
Figure 9. Current Boost Regulator
Figure 10. Short Circuit Protection
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14
MC7800, MC7800A, LM340, LM340A Series
2.5
20
16
I
= 1.0 A
O
θ
θ
T
= 5°C/W
= 65°C/W
JC
JA
I
= 500 mA
= 200 mA
O
θ
= 0°C/W
HS
= 150°C
2.0
1.5
J(max)
I
O
12
8.0
4.0
0
θ
= 5°C/W
I
= 20 mA
HS
O
I
O
= 0 mA
θ
= 15°C/W
1.0
0.5
HS
∆V = 2% of V
O
O
No Heatsink
25
– – – Extended Curve for MC78XXB
0
–50
–25
0
50
75
100
125
150
–75
–50
–25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE (°C)
A
T , JUNCTION TEMPERATURE (°C)
J
Figure 11. Worst Case Power Dissipation versus
Ambient Temperature (Case 221A)
Figure 12. Input Output Differential as a Function
of Junction Temperature (MC78XXC, AC, B)
80
3.5
P
for T = 50°C
A
D(max)
70
60
50
3.0
2.5
2.0
Free Air
Mounted
Vertically
2.0 oz. Copper
L
Minimum
Size Pad
L
1.5
1.0
40
30
R
θJA
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
2
Figure 13. D PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
DEFINITIONS
Line Regulation – The change in output voltage for a
changein 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.
Quiescent 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.
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.
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.
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15
MC7800, MC7800A, LM340, LM340A Series
ORDERING INFORMATION
Shipping
Tape & Reel
Rails
(No Suffix)
(R4 Suffix)
Device
MC7805.2CT
MC7805ACD2T/R4
MC7805ACT
MC7805CD2T/R4
MC7805CT
Output Voltage
Temperature Range
Package
TO–220
D2PAK
–
800 Units/Reel
–
TO–220
D2PAK
T = 0° to +125°C
J
800 Units/Reel
5.0 V
TO–220
D2PAK
TO–220
D2PAK
TO–220
–
LM340T–5
LM340AT–5
MC7805BD2T/R4
MC7805BT
800 Units/Reel
T = 40° to +125°C
J
–
MC7806ACT
MC7806CT
–
T = 0° to +125°C
J
–
6.0 V
8.0 V
9.0 V
MC7806BD2T/R4
MC7806BT
800 Units/Reel
–
T = 40° to +125°C
J
MC7808ABT
MC7808ACT
MC7808CD2T/R4
MC7808CT
–
T = 0° to +125°C
J
D2PAK
TO–220
D2PAK
800 Units/Reel
–
MC7808BD2T/R4
MC7808BT
800 Units/Reel
T = 40° to +125°C
J
–
TO–220
D2PAK
TO–220
50 Units/Rail
MC7809ACT
MC7809CD2T/R4
MC7809CT
–
T = 0° to +125°C
J
800 Units/Reel
–
MC7809BT
T = 40° to +125°C
J
–
MC7812ACD2T/R4
MC7812ACT
MC7812CD2T/R4
MC7812CT
D2PAK
TO–220
D2PAK
800 Units/Reel
–
800 Units/Reel
T = 0° to +125°C
J
12 V
TO–220
–
LM340T–12
LM340AT–12
MC7812BD2T/R4
MC7812BT
D2PAK
TO–220
D2PAK
TO–220
D2PAK
800 Units/Reel
T = 40° to +125°C
J
–
MC7815ACD2T/R4
MC7815ACT
MC7815CD2T/R4
MC7815CT
800 Units/Reel
–
800 Units/Reel
T = 0° to +125°C
J
15 V
TO–220
–
LM340T–15
LM340AT–15
MC7815BD2T/R4
MC7815BT
D2PAK
800 Units/Reel
–
T = 40° to +125°C
J
TO–220
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16
MC7800, MC7800A, LM340, LM340A Series
ORDERING INFORMATION
Shipping
Tape & Reel
Rails
(No Suffix)
(R4 Suffix)
Device
MC7818ACT
MC7818CD2T/R4
MC7818CT
Output Voltage
Temperature Range
Package
TO–220
D2PAK
–
T = 0° to +125°C
J
800 Units/Reel
18 V
–
–
–
TO–220
MC7818BT
T = 40° to +125°C
J
50 Units/Rail
MC7824ACT
MC7824CD2T
MC7824CT
T = 0° to +125°C
J
D2PAK
TO–220
D2PAK
TO–220
–
24 V
MC7824BD2T/R4
MC7824BT
800 Units/Reel
–
T = 40° to +125°C
J
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17
MC7800, MC7800A, LM340, LM340A Series
MARKING DIAGRAMS
MC7800, MC7800A Series
MARKING DIAGRAMS
LM340, LM340A Series
MC
LM
78xxXXT
ALYWW
340XT–xx
ALYWW
xx = Voltage Option
XX = Appropriate Suffix Options
78xxXXT
ALYWW
A
L
= Assembly Location
= Wafer Lot
Y
= Year
WW = Work Week
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18
MC7800, MC7800A, LM340, LM340A Series
PACKAGE DIMENSIONS
TO–220
T SUFFIX
CASE 221A–09
ISSUE AA
NOTES:
SEATING
PLANE
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–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
0.620 14.48
MILLIMETERS
MIN
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
–––
0.405
0.190
0.035
0.147
0.105
0.155
0.025
9.66
4.07
0.64
3.61
2.42
2.80
0.46
2
3
U
H
G
H
J
K
L
N
Q
R
S
T
U
V
Z
0.562 12.70
0.060
0.210
0.120
0.110
0.055
0.255
0.050
–––
1.15
4.83
2.54
2.04
1.15
5.97
0.00
1.15
–––
L
R
V
J
G
D
N
0.080
2.04
D2PAK
D2T SUFFIX
CASE 936–03
ISSUE B
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.
4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.
5. DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASH
AND GATE PROTRUSIONS NOT TO EXCEED
0.025 (0.635) MAXIMUM.
TERMINAL 4
–T–
OPTIONAL
CHAMFER
K
E
A
U
S
V
B
H
F
INCHES
DIM MIN MAX
MILLIMETERS
MIN MAX
1
2
3
M
A
B
C
D
E
F
G
H
J
K
L
M
N
P
0.386 0.403 9.804 10.236
0.356 0.368 9.042 9.347
0.170 0.180 4.318 4.572
0.026 0.036 0.660 0.914
0.045 0.055 1.143 1.397
0.051 REF
0.100 BSC
0.539 0.579 13.691 14.707
L
J
D
P
N
G
M
1.295 REF
2.540 BSC
0.010 (0.254)
T
R
0.125 MAX
0.050 REF
3.175 MAX
1.270 REF
0.000 0.010 0.000 0.254
0.088 0.102 2.235 2.591
0.018 0.026 0.457 0.660
0.058 0.078 1.473 1.981
C
R
S
U
V
5
REF
5 REF
0.116 REF
0.200 MIN
0.250 MIN
2.946 REF
5.080 MIN
6.350 MIN
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19
MC7800, MC7800A, LM340, LM340A Series
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
withoutfurthernoticetoanyproductsherein. SCILLCmakesnowarranty,representationorguaranteeregardingthesuitabilityofitsproductsforanyparticular
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.
SCILLCproductsarenotdesigned, intended, orauthorizedforuseascomponentsinsystemsintendedforsurgicalimplantintothebody, orotherapplications
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
attorneyfees 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.
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For additional information, please contact your local
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*Available from Germany, France, Italy, England, Ireland
MC7800/D
相关型号：
MC7808ECTBU
Fixed Positive Standard Regulator, 24VBIPolar, PSFM3, LEAD FREE, TO-220, 3 PIN
FAIRCHILD
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