MC7800, MC7800A, LM340,
LM340A Series, NCV7805
1.0 A Positive Voltage
Regulators
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.
•
Output Current in Excess of 1.0 A
•
No External Components Required
•
Internal Thermal Overload Protection
•
Internal Short Circuit Current Limiting
•
Output Transistor Safe−Area Compensation
•
Output Voltage Offered in 2% and 4% Tolerance
•
Available in Surface Mount D
2
PAK−3, DPAK−3 and Standard
3−Lead Transistor Packages
•
Pb−Free Package May be Available. The G−Suffix Denotes a
Pb−Free Lead Finish
MAXIMUM RATINGS
(T
A
= 25°C, unless otherwise noted.)
Rating
Input Voltage (5.0 − 18 V)
Input Voltage
(24 V)
Power Dissipation
Case 221A (TO−220−3)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 936 (D
2
PAK−3)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Symbol
V
I
Value
35
40
Unit
Vdc
Input
C
in
*
0.33
mF
MC78XX
Output
C
O
**
http://onsemi.com
TO−220−3
T SUFFIX
CASE 221A
1
Heatsink surface
connected to Pin 2.
3
D
2
PAK−3
D2T SUFFIX
CASE 936
Pin 1. Input
2. Ground
3. Output
2
1
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
DPAK−3
DT SUFFIX
CASE 369A
3
1
STANDARD APPLICATION
P
D
R
qJA
R
qJC
Internally
Limited
65
5.0
W
°C/W
°C/W
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.
XX, These two digits of the type number
indicate nominal voltage.
* C
in
is required if regulator is located an
appreciable distance from power supply
filter.
** C
O
is not needed for stability; however,
it does improve transient response. Values
of less than 0.1
mF
could cause instability.
P
D
R
qJA
Thermal Resistance, Junction−to−Case
Case 369A (DPAK−3)
T
A
= 25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Storage Junction Temperature Range
Operating Junction Temperature
R
qJA
Internally
Limited
See
Figure
14
5.0
W
°C/W
°C/W
P
D
R
qJA
R
qJC
T
stg
T
J
Internally
Limited
92
5.0
−65 to
+150
+150
W
°C/W
°C/W
°C
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
DEVICE MARKING INFORMATION
°C
See general marking information in the device marking
section on page 18 of this data sheet.
©
Semiconductor Components Industries, LLC, 2004
1
March, 2004 − Rev. 12
Publication Order Number:
MC7800/D
MC7800, MC7800A, LM340, LM340A Series, NCV7805
NOTE: ESD data available upon request.
V
in
MC7800
LAT
Q17
R24
50
LAT 3 A
Q18
Q19
QNPN
C3
Q10
QNPN
1.0 P
D2
Zener
R19
27.5 k
Q20
QNPN
R14
1.0 k
R15
680
R18
100 k
R22
100
Q7
QNPN
R17
9.0 k
R21
600
R23
0.2
V
out
5.01
R30
18 k
Sense
Q5
QNPN 2
Q9
QNPN 2
Q12
QNPN
R11
15 k
Q15
QNPN
R20
17500
R16
600
R10
3340−(3316ACT)
R12
3.0 k
R25
6.0 k
R26
3.0 k
R29
9.0 k
R28
9.0 k
R27
9.0 k
D1
Zener
R1
10.66 k
Q8
QNPN
R2
1.56 k
Q6
QNPN
R5
4.5 k
Q14
QNPN
Q1
C2
3.0 P
N+
QNPN 6
Q13
QNPN
R6
1.0 k
R7
14 k
Q4
QNPN
C1
30 P
R9
3.0 k
SUB
Q11 2
R13
11660
Q2
Q16
QNPN 4
Diode
R3
1.8 k
R8
5.0 k
Q3
QNPN
This device contains 22 active transistors.
Figure 1. Representative Schematic Diagram
http://onsemi.com
2
MC7800, MC7800A, LM340, LM340A Series, NCV7805
ELECTRICAL CHARACTERISTICS
(V
in
= 10 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7805B, NCV7805
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
7.0 Vdc
≤
V
in
≤
20 Vdc
8.0 Vdc
≤
V
in
≤
20 Vdc
Line Regulation (Note 2)
7.5 Vdc
≤
V
in
≤
20 Vdc, 1.0 A
8.0 Vdc
≤
V
in
≤
12 Vdc
Load Regulation (Note 2)
5.0 mA
≤
I
O
≤
1.0 A
5.0 mA
≤
I
O
≤
1.5 A (T
A
= 25°C)
Quiescent Current
Quiescent Current Change
7.0 Vdc
≤
V
in
≤
25 Vdc
5.0 mA
≤
I
O
≤
1.0 A (T
A
= 25°C)
Ripple Rejection
8.0 Vdc
≤
V
in
≤
18 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25°C)
Output Noise Voltage (T
A
= 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (T
A
= 25°C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25°C)
Average Temperature Coefficient of
Output Voltage
Symbol
V
O
V
O
−
4.75
Reg
line
−
−
Reg
load
−
−
I
B
DI
B
−
−
RR
V
I
− V
O
V
n
r
O
I
SC
I
max
TCV
O
−
−
−
−
−
−
−
−
−
68
2.0
10
0.9
0.2
2.2
−0.3
−
0.5
−
−
−
−
−
−
−
−
−
62
−
−
−
−
−
−
0.3
0.08
83
2.0
10
0.9
0.6
2.2
−0.3
1.0
0.8
−
−
−
−
−
−
−
dB
Vdc
mV/V
O
mW
A
A
mV/°C
−
1.3
0.15
3.2
100
50
8.0
−
−
−
1.3
1.3
3.2
25
25
6.5
mA
mA
5.0
1.3
100
50
−
−
0.5
0.8
20
10
mV
−
5.0
−
5.25
4.75
−
5.0
−
5.25
−
mV
Min
4.8
Typ
5.0
Max
5.2
MC7805C/LM340T−5
Min
4.8
Typ
5.0
Max
5.2
Unit
Vdc
Vdc
ELECTRICAL CHARACTERISTICS
(V
in
= 10 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7805AB/MC7805AC/LM340AT−5
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
7.5 Vdc
≤
V
in
≤
20 Vdc
Line Regulation (Note 2)
7.5 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
8.0 Vdc
≤
V
in
≤
12 Vdc, I
O
= 1.0 A
8.0 Vdc
≤
V
in
≤
12 Vdc, I
O
= 1.0 A, T
J
= 25°C
7.3 Vdc
≤
V
in
≤
20 Vdc, I
O
= 1.0 A, T
J
= 25°C
Load Regulation (Note 2)
5.0 mA
≤
I
O
≤
1.5 A, T
J
= 25°C
5.0 mA
≤
I
O
≤
1.0 A
250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
8.0 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
7.5 Vdc
≤
V
in
≤
20 Vdc, T
J
= 25°C
5.0 mA
≤
I
O
≤
1.0 A
Symbol
V
O
V
O
Reg
line
−
−
−
−
Reg
load
−
−
−
I
B
DI
B
−
−
−
0.3
−
0.08
0.8
0.8
0.5
−
1.3
0.8
0.53
3.2
25
25
15
6.0
mA
mA
0.5
0.8
1.3
4.5
10
12
4.0
10
mV
Min
4.9
4.8
Typ
5.0
5.0
Max
5.1
5.2
Unit
Vdc
Vdc
mV
1. T
low
= 0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX
T
high
= +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=
*40°C
for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
http://onsemi.com
3
MC7800, MC7800A, LM340, LM340A Series, NCV7805
ELECTRICAL CHARACTERISTICS (continued)
(V
in
= 10 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless
otherwise noted.)
MC7805AB/MC7805AC/LM340AT−5
Characteristic
Ripple Rejection
8.0 Vdc
≤
V
in
≤
18 Vdc, f = 120 Hz, I
O
= 500 mA
Dropout Voltage (I
O
= 1.0 A, T
J
= 25°C)
Output Noise Voltage (T
A
= 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance (f = 1.0 kHz)
Short Circuit Current Limit (T
A
= 25°C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
RR
V
I
− V
O
V
n
r
O
I
SC
I
max
TCV
O
Min
68
−
−
−
−
−
−
Typ
83
2.0
10
0.9
0.2
2.2
−0.3
Max
−
−
−
−
−
−
−
Unit
dB
Vdc
mV/V
O
mW
A
A
mV/°C
ELECTRICAL CHARACTERISTICS
(V
in
= 11 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7806B
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
8.0 Vdc
≤
V
in
≤
21 Vdc
9.0 Vdc
≤
V
in
≤
21 Vdc
Line Regulation, T
J
= 25°C (Note 2)
8.0 Vdc
≤
V
in
≤
25 Vdc
9.0 Vdc
≤
V
in
≤
13 Vdc
Load Regulation, T
J
= 25°C (Note 2)
5.0 mA
≤
I
O
≤
1.5 A
Quiescent Current (T
J
= 25°C)
Quiescent Current Change
8.0 Vdc
≤
V
in
≤
25 Vdc
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
9.0 Vdc
≤
V
in
≤
19 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25°C)
Output Noise Voltage (T
A
= 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (T
A
= 25°C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25°C)
Average Temperature Coefficient of Output
Voltage
Symbol
V
O
V
O
−
5.7
Reg
line
−
−
Reg
load
I
B
DI
B
−
−
RR
V
I
− V
O
V
n
r
O
I
SC
I
max
TCV
O
−
−
−
−
−
−
−
−
−
65
2.0
10
0.9
0.2
2.2
−0.3
−
0.5
−
−
−
−
−
−
−
−
−
58
−
−
−
−
−
−
0.3
0.08
65
2.0
10
0.9
0.2
2.2
−0.3
1.3
0.5
−
−
−
−
−
−
−
dB
Vdc
mV/V
O
mW
A
A
mV/°C
−
−
5.5
1.4
1.3
3.3
120
60
120
8.0
−
−
−
−
0.5
0.8
1.3
3.3
24
12
30
8.0
mV
mA
mA
−
6.0
−
6.3
5.7
−
6.0
−
6.3
−
mV
Min
5.75
Typ
6.0
Max
6.25
Min
5.75
MC7806C
Typ
6.0
Max
6.25
Unit
Vdc
Vdc
1. T
low
= 0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX
T
high
= +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=
*40°C
for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
http://onsemi.com
4
MC7800, MC7800A, LM340, LM340A Series, NCV7805
ELECTRICAL CHARACTERISTICS
(V
in
= 11 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7806AC
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
8.6 Vdc
≤
V
in
≤
21 Vdc
Line Regulation (Note 2)
8.6 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
9.0 Vdc
≤
V
in
≤
13 Vdc, I
O
= 1.0 A
Load Regulation (Note 2)
5.0 mA
≤
I
O
≤
1.5 A, T
J
= 25°C
5.0 mA
≤
I
O
≤
1.0 A
250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
9.0 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
9.0 Vdc
≤
V
in
≤
21 Vdc, I
O
= 1.0 A, T
J
= 25°C
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
9.0 Vdc
≤
V
in
≤
19 Vdc, f = 120 Hz, I
O
= 500 mA
Dropout Voltage (I
O
= 1.0 A, T
J
= 25°C)
Output Noise Voltage (T
A
= 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance (f = 1.0 kHz)
Short Circuit Current Limit (T
A
= 25°C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
V
O
V
O
Reg
line
−
−
Reg
load
−
−
−
I
B
DI
B
−
−
−
RR
V
I
− V
O
V
n
r
O
I
SC
I
max
TCV
O
58
−
−
−
−
−
−
−
−
−
65
2.0
10
0.9
0.2
2.2
−0.3
0.8
0.8
0.5
−
−
−
−
−
−
−
dB
Vdc
mV/V
O
mW
A
A
mV/°C
−
1.3
0.9
0.2
3.3
25
25
15
6.0
mA
mA
5.0
1.4
12
15
mV
Min
5.88
5.76
Typ
6.0
6.0
Max
6.12
6.24
Unit
Vdc
Vdc
mV
ELECTRICAL CHARACTERISTICS
(V
in
= 14 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7808B
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
10.5 Vdc
≤
V
in
≤
23 Vdc
11.5 Vdc
≤
V
in
≤
23 Vdc
Line Regulation, T
J
= 25°C, (Note 2)
10.5 Vdc
≤
V
in
≤
25 Vdc
11 Vdc
≤
V
in
≤
17 Vdc
Load Regulation, T
J
= 25°C (Note 2)
5.0 mA
≤
I
O
≤
1.5 A
Quiescent Current
Quiescent Current Change
10.5 Vdc
≤
V
in
≤
25 Vdc
5.0 mA
≤
I
O
≤
1.0 A
Symbol
V
O
V
O
−
7.6
Reg
line
−
−
Reg
load
I
B
DI
B
−
−
−
−
−
0.5
−
−
−
−
1.0
0.5
−
−
6.0
1.7
1.4
3.3
160
80
160
8.0
−
−
−
−
6.0
1.7
1.4
3.3
32
16
35
8.0
mV
mA
mA
−
8.0
−
8.4
7.6
−
8.0
−
8.4
−
mV
Min
7.7
Typ
8.0
Max
8.3
Min
7.7
MC7808C
Typ
8.0
Max
8.3
Unit
Vdc
Vdc
1. T
low
= 0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX
T
high
= +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=
*40°C
for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
http://onsemi.com
5
京公网安备 11010802033920号
EEWORLD
