oct 2010
L7800
POSITIVE VOLTAGE REGULATORS
s
s
s
s
s
OUTPUT CURRENT TO 1.5A
OUTPUT VOLTAGES OF 5; 6; 8; 9;
10; 12; 15; 18; 24V
THERMAL OVERLOAD PROTECTION
SHORT CIRCUIT PROTECTION
OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION
The L7800 series of three-terminal positive
regulators is available in TO-220, TO-220FP,
packages and several fixed output voltages,
making it useful in a wide range of applications.
These regulators can
provide local on-card regulation, eliminating the
distribution problems associated with single point
regulation. 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 voltage and currents.
TO-220
TO-220FP
TO-220FM
Figure 1: Schematic Diagram
Rev. 12
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1
oct 2010
L7800 SERIES
Table 1: Absolute Maximum Ratings
Symbol
V
I
I
O
P
tot
T
stg
T
op
DC Input Voltage
Output Current
Power Dissipation
Storage Temperature Range
Operating Junction Temperature for L7800
Range
for L7800C
Parameter
for V
O
= 5 to 18V
for V
O
= 20, 24V
Value
35
40
Internally Limited
Internally Limited
-65 to 150
-55 to 150
0 to 150
°C
°C
Unit
V
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Table 2: Thermal Data
Symbol
Parameter
TO-220
5
50
TO-220FP TO-220FM
5
60
5
60
Unit
°C/W
°C/W
R
thj-case
Thermal Resistance Junction-case Max
R
thj-amb
Thermal Resistance Junction-ambient
Max
Figure 2: Schematic Diagram
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2
oct 2010
L7800 SERIES
Figure 4: Application Circuits
TEST CIRCUITS
Figure 5: DC Parameter
Figure 6: Load Regulation
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3
oct 2010
L7800 SERIES
Figure 7: Ripple Rejection
Table 4: Electrical Characteristics Of L7805
(refer to the test circuits, T
J
= -55 to 150°C, V
I
= 10V,
I
O
= 500 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
(*)
∆V
O
(*)
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 8 to 20 V
V
I
= 7 to 25 V
V
I
= 8 to 12 V
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 8 to 25 V
∆V
O
/∆T Output Voltage Drift
eN
SVR
V
d
R
O
I
sc
I
scp
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Short Circuit Peak Current
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 8 to 18 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
T
J
= 25°C
1.3
T
J
= 25°C
T
J
= 25°C
f = 120Hz
68
2
17
0.75
2.2
1.2
3.3
2.5
0.6
40
P
O
≤
15W
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
4.8
4.65
Typ.
5
5
3
1
Max.
5.2
5.35
50
25
100
25
6
0.5
0.8
mV/°C
µV/V
O
dB
V
mΩ
A
A
mA
mA
mV
Unit
V
V
mV
(*) 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.
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4
oct 2010
L7800 SERIES
Table 5: Electrical Characteristics Of L7806
(refer to the test circuits, T
J
= -55 to 150°C, V
I
= 11V,
I
O
= 500 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
(*)
∆V
O
(*)
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 9 to 21 V
V
I
= 8 to 25 V
V
I
= 9 to 13 V
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 9 to 25 V
∆V
O
/∆T Output Voltage Drift
eN
SVR
V
d
R
O
I
sc
I
scp
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Short Circuit Peak Current
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 9 to 19 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
T
J
= 25°C
1.3
T
J
= 25°C
T
J
= 25°C
f = 120Hz
65
2
19
0.75
2.2
1.2
3.3
2.5
0.7
40
P
O
≤
15W
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
5.75
5.65
Typ.
6
6
Max.
6.25
6.35
60
30
100
30
6
0.5
0.8
mV/°C
µV/V
O
dB
V
mΩ
A
A
mA
mA
mV
Unit
V
V
mV
(*) 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.
Table 6: Electrical Characteristics Of L7808
(refer to the test circuits, T
J
= -55 to 150°C, V
I
= 14V,
I
O
= 500 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
(*)
∆V
O
(*)
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 11.5 to 23 V
V
I
= 10.5 to 25 V
V
I
= 11 to 17 V
I
O
= 5 mA to 1.5 A
I
O
= 250 to 750 mA
T
J
= 25°C
I
O
= 5 mA to 1 A
V
I
= 11.5 to 25 V
∆V
O
/∆T Output Voltage Drift
eN
SVR
V
d
R
O
I
sc
I
scp
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Short Circuit Peak Current
I
O
= 5 mA
B =10Hz to 100KHz
V
I
= 11.5 to 21.5 V
I
O
= 1 A
f = 1 KHz
V
I
= 35 V
T
J
= 25°C
T
J
= 25°C
1.3
T
J
= 25°C
T
J
= 25°C
f = 120Hz
62
2
16
0.75
2.2
1.2
3.3
2.5
1
40
P
O
≤
15W
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
7.7
7.6
Typ.
8
8
Max.
8.3
8.4
80
40
100
40
6
0.5
0.8
mV/°C
µV/V
O
dB
V
mΩ
A
A
mA
mA
mV
Unit
V
V
mV
(*) 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.
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5
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