LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
3-TERMINAL 1A POSITIVE
VOLTAGE REGULATORS
The LM78XX series of three-terminal positive regulators are available in
the TO-220/D-PAK package and with several fixed output voltages, making
them useful in a wide range of applications. Each type employs internal
current limiting, thermal shut-down and safe area protection, making it
essentially indestructible. If adequate heat sinking is provided, they can
deliver over 1A output current. Although designed primarily as fixed voltage
regulators, these devices can be used with external components to obtain
adjustable voltages and currents.
TO-220
D-PAK
FEATURES
•
•
•
•
•
Output Current up to 1A
Output Voltages of 5, 6, 8, 9, 10, 11, 12, 15, 18, 24V
Thermal Overload Protection
Short Circuit Protection
Output Transistor SOA Protection
1
1: Input 2: GND 3: Output
ORDERING INFORMATION
Device
KA78XXCT
KA78XXAT
KA78XXIT
KA78XXR
KA78XXAR
KA78XXIR
Output Voltage
Tolerance
±
4%
±
2%
±
4%
±
2%
±
4%
D-PAK
Packag
e
TO-220
Operating Temperature
0 ~ +125
°C
-40 ~ +125
°C
0 ~ +125
°C
-40 ~ +125
°C
BLOCK DIAGRAM
Rev. B
©
1999 Fairchild Semiconductor Corporation
LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
ABSOLUTE MAXIMUM RATINGS
(T
A
= +25°C, unless otherwise specified)
Characteristic
Input Voltage (for V
O
= 5V to 18V)
(for V
O
= 24V)
Thermal Resistance Junction-Cases
Thermal Resistance Junction-Air
Operating Temperature Range KA78XX/A/R/RA
KA78XXI/RI
Storage Temperature Range
Symbol
V
I
V
I
R
θJC
R
θJA
T
OPR
T
STG
Value
35
40
5
65
0 ~ +125
-40 ~ +125
-65 ~ +150
Unit
V
V
°C/W
°C/W
°C
°C
°C
LM7805/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test circuit, T
MIN
< T
J
< T
MAX
, I
O
= 500mA, V
I
= 10V, C
I
= 0.33µF, C
O
= 0.1µF, unless otherwise specified)
Characteristic
Symbol
Test Conditions
T
J
=+25
°C
Output Voltage
V
O
5.0mA
≤
I
O
≤1.0A,
P
O
≤
15W
V
I
= 7V to 20V
V
I
= 8V to 20V
V
O
= 7V to 25V
T
J
=+25°C
V
I
= 8V to 12V
T
J
=+25°C
I
O
= 5.0mA to1.5A
I
O
=250mA to 750mA
LM7805I
LM7805
Min Typ Max Min Typ Max
4.8 5.0 5.2 4.8 5.0 5.2
4.75 5.0 5.25
4.75 5.0 5.25
4.0
1.6
9
4
5.0
100
50
100
50
8
4.0
1.6
9
4
5.0
100
50
100
50
8
mV
mV
mA
mA
mV/
°C
µV/Vo
dB
V
mΩ
mA
A
Unit
V
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
∆V
O
∆V
O
I
Q
∆I
Q
∆V
O
/∆T
V
N
RR
V
O
R
O
I
SC
I
PK
T
J
=+25
°C
I
O
= 5mA to 1.0A
V
I
= 7V to 25V
V
I
= 8V to 25V
I
O
= 5mA
f = 10Hz to 100Khz, T
A
=+25
°C
f = 120Hz
V
O
= 8 to 18V
I
O
= 1A, T
J
=+25
°C
f = 1KHz
V
I
= 35V, T
A
=+25
°C
T
J
=+25
°C
0.03 0.5
0.3
-0.8
42
62
73
2
15
230
2.2
62
1.3
0.03 0.5
0.3 1.3
-0.8
42
73
2
15
230
2.2
* T
MIN
<T
J
<T
MAX
LM78XXI/RI: T
MIN
= - 40
°C,
T
MAX
= +125
°C
LM78XX/R: T
MIN
= 0
°C,
T
MAX
= +125
°C
* 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 is used.
LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7806/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test circuit, T
MIN
<T
J
<T
MAX
, I
O
=500mA, V
I
= 11V C
I
= 0.33µF, C
O
= 0.1µF, unless otherwise specified)
Characteristic
Symbol
Test Conditions
T
J
=+25
°C
Output Voltage
V
O
5.0mA
≤
I
O
≤1.0A,
P
D
≤
15W
V
I
= 8.0V to 21V
V
I
= 9.0V to 21V
V
I
= 8V to 25V
T
J
=+25
°C
V
I
= 9V to 13V
I
O
=5mA to 1.5A
T
J
=+25
°C
I
O
=250mA to750A
T
J
=+25
°C
I
O
= 5mA to 1A
V
I
= 8V to 25V
V
I
= 9V to 25V
I
O
= 5mA
f = 10Hz to 100Khz, T
A
=+25
°C
f = 120Hz
V
I
= 9V to 19V
I
O
= 1A, T
J
=+25
°C
f = 1KHz
V
I
= 35V, T
A
=+25°C
T
J
=+25
°C
Min
5.75
LM7806I
Typ Max
6.0
6.25
Min
5.75
5.7
5.7
6.0
5
1.5
9
3
5.0
6.3
120
60
120
60
8
0.5
1.3
-0.8
45
59
75
2
19
250
2.2
59
-0.8
45
75
2
19
250
2.2
mV/
°C
µV/V
O
dB
V
mΩ
mA
A
5
1.5
9
3
5.0
120
60
120
60
8
0.5
1.3
mV
mV
mA
mA
LM7806
Typ
Max
6.0
6.25
6.0
6.3
Unit
V
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
∆V
O
∆V
O
I
Q
∆I
Q
∆V
O
/∆T
V
N
RR
V
D
R
D
I
SC
I
PK
* T
MIN
<T
J
<T
MAX
LM78XXI/RI: T
MIN
= - 40
°C,
T
MAX
= +125
°C
LM78XX/R: T
MIN
= 0
°C,
T
MAX
= +125
°C
* Load and line regulation are specified at constant, junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7808/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test Circuit, T
MIN
<T
J
< T
MAX
, I
O
= 500mA, V
I
= 14V, C
I
= 0.33µF, C
O
= 0.1µF, unless otherwise specified)
Characteristic
Symbol
Test Conditions
T
J
=+25
°C
Output Voltage
V
O
5.0mA
≤
I
O
≤
1.0A, P
O
≤
15W
V
I
= 10.5V to 23V
V
I
= 11.5V to 23V
T
J
=+ 25°C V
I
= 10.5V to 25V
V
I
= 11.5V to 17V
I = 5.0mA to 1.5A
T
J
= +25°C
O
I
O
= 250mA to 750mA
T
J
=+25
°C
I
O
= 5mA to 1.0A
V
I
= 10.5A to 25V
V
I
= 11.5V to 25V
I
O
= 5mA
f = 10Hz to 100Khz, T
A
=+25
°C
f = 120Hz, V
I
= 11.5V to 21.5
I
O
= 1A, T
J
=+25
°C
f = 1KHz
V
I
= 35V, T
A
=+25
°C
T
J
=+25
°C
56
LM7808I
Min Typ Max
7.7 8.0
8.3
LM7808
Typ
Max
8.0
8.3
8.0
5.0
2.0
10
5.0
5.0
0.05
0.5
-0.8
52
56
73
2
17
230
2.2
8.4
160
80
160
80
8
0.5
1.0
Unit
Min
7.7
7.6
V
7.6
8.0
5.0
2.0
10
5.0
5.0
0.05
0.5
-0.8
52
73
2
17
230
2.2
8.4
160
80
160
80
8
0.5
1.0
mV/
°C
µV/Vo
dB
V
mΩ
mA
A
mV
mV
mA
mA
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
∆V
O
∆V
O
I
Q
∆I
Q
∆V
O
/∆T
V
N
RR
V
D
R
O
I
SC
I
PK
* T
MIN
<T
J
<T
MAX
LM78XXI/RI: T
MIN
= - 40
°C,
T
MAX
= +125
°C
LM78XX/R: T
MIN
= 0
°C,
T
MAX
= +125
°C
* Load and line regulation are specified at constant, junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7809/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test circuit. T
MIN
< T
J
<T
MAX
, I
O
= 500mA, V
I
= 15V, C
I
= 0.33µF, C
O
= 0.1µF. unless otherwise specified)
Characteristic
Symbol
Test Conditions
T
J
=+25
°C
Output Voltage
V
O
5.0mA
≤
I
O
≤1.0A,
P
D
≤15W
V
I
= 11.5V to 24V
V
I
= 12.5V to 24V
V
I
= 11.5V to 25V
T
J
=+25
°C
V
I
= 12V to 25v
I
O
= 5mA to 1.5A
T
J
=+25
°C
I
O
= 250mA to 750mA
T
J
=+25
°C
I
O
= 5mA to 1.0A
V
I
= 11.5V to 26V
V
I
= 12.5V to 26V
I
O
= 5mA
f = 10Hz to 100Khz, T
A
=+25
°C
f = 120Hz
V
I
= 13V to 23V
I
O
= 1A, T
J
=+25
°C
f = 1KHz
V
I
= 35V, T
A
=+25
°C
T
J
= +25
°C
LM7809I
LM7809
Min Typ Max Min Typ Max
8.65
9
9.35 8.65
9
9.35
V
8.6
8.6
9
6
2
12
4
5.0
9.4
180
90
180
90
8
0.5
1.3
-1
58
56
71
2
17
250
2.2
56
-1
58
71
2
17
250
2.2
mV/
°C
µV/V
O
dB
V
mΩ
mA
A
6
2
12
4
5.0
180
90
180
90
8
0.5
1.3
mV
mV
mA
mA
9
9.4
Unit
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
∆V
O
∆V
O
I
Q
∆I
Q
∆V
O
/∆T
V
N
RR
V
D
R
O
I
SC
I
PK
* T
MIN
<T
J
<T
MAX
LM78XXI/RI: T
MIN
= - 40
°C,
T
MAX
= +125
°C
LM78XX/R: T
MIN
= 0
°C,
T
MAX
= +125
°C
* Load and line regulation are specified at constant, junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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