2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.4
Features
Maximum Output Current of 100mA
Output Voltage of 5V, 8V, 12V, 15V, 18V and 24V
Thermal Overload Protection
Short Circuit Current Limiting
Output Voltage Offered in 5% Tolerance
Description
The MC78LXXA/LM78LXXA/MC78L05AA series of
fixed voltage monolithic integrated circuit voltage
regulators are suitable for application that required supply
current up to 100mA.
TO-92
1. Output 2. GND 3. Input
8-SOP
1. Output 2. GND 3. GND 4. NC
5. NC 6. GND 7. GND 8. Input
1
1
SOT-89
1
GND
2 3
2 3
8
Internal Block Diagram
V
I
3
2
GND
V
0
1
I
R
SC
REFERENCE VOLTAGE
SHORT CIRCUIT
PROTECTION
THERMAL SHUTDOWN
CIRCUIT
+
-
Inpu
t
Outpu
t
MC78LXXA/LM78LXXA/MC78L05AA
3-Terminal 0.1A Positive Voltage Regulator
MC78LXXA/LM78LXXA/MC78L05AA
2
Absolute Maximum Ratings
Electrical Characteristics(MC78L05A/LM78L05A)
(V
I
= 10V, I
O
= 40mA, 0
C
T
J
125
C, C
I
= 0.33
F, C
O
= 0.
1
F, unless otherwise specified. (Note 1)
Note:
1. The maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length
of the package. The data above represent pulse test conditions with junction temperature as indicated at the initiation of tests.
2. Power dissipation P
D
0.75W.
Parameter
Symbol
Value
Unit
Input Voltage (for V
O
= 5V, 8V)
(for V
O
= 12V to 18V)
(for V
O
=
24V)
V
I
30
35
40
V
V
V
Operating Junction Temperature Range
T
J
0 ~ +150
C
Storage Temperature Range
T
STG
-65 ~ +150
C
Parameter
Symbol
Conditions
Min.
Typ. Max.
Unit
Output Voltage
V
O
T
J
= 25
C
4.8
5.0
5.2
V
Line Regulation (Note1)
V
O
T
J
= 25
C
7V
V
I
20V
-
8
150
mV
8V
V
I
20V
-
6
100
mV
Load Regulation (Note1)
V
O
T
J
= 25
C
1mA
I
O
100mA
-
11
60
mV
1mA
I
O
40mA
-
5.0
30
mV
Output Voltage
V
O
7V
V
I
20V
1mA
I
O
40mA
-
-
5.25
V
7V
V
I
V
MAX
(Note 2)
1mA
I
O
70mA
4.75
-
5.25
V
Quiescent Current
I
Q
T
J
= 25
C
-
2.0
5.5
mA
Quiescent Current
Change
With Line
I
Q
8V
V
I
20V
-
-
1.5
mA
With Load
I
Q
1mA
I
O
40
mA
-
-
0.1
mA
Output Noise Voltage
V
N
T
A
= 25
C, 10Hz
f
100kHz
-
40
-
V/Vo
Temperature Coefficient of V
O
V
O
/
T
I
O
= 5mA
-
-0.65
-
mV/
C
Ripple Rejection
RR
f = 120Hz, 8V
V
I
18V, T
J
= 25
C
41
80
-
dB
Dropout Voltage
V
D
T
J
= 25
C
-
1.7
-
V
MC78LXXA/LM78LXXA/MC78L05AA
3
Electrical Characteristics(MC78L08A)
(Continued)
(V
I
= 14V, I
O
= 40mA, 0
C
T
J
125
C, C
I
= 0.33
F, C
O
= 0.
1
F, unless otherwise specified. (Note 1)
Note:
1. The maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length
of the package. The data above represent pulse test conditions with junction temperature as indicated at the initiation of tests.
2. Power dissipation P
D
0.75W.
Parameter
Symbol
Conditions
Min. Typ. Max.
Unit
Output Voltage
V
O
T
J
= 25
C
7.7
8.0
8.3
V
Line Regulation (Note1)
V
O
T
J
= 25
C
10.5V
V
I
23V
-
10
175
mV
11V
V
I
23V
-
8
125
mV
Load Regulation (Note1)
V
O
T
J
= 25
C
1mA
I
O
100mA
-
15
80
mV
1mA
I
O
40mA
-
8.0
40
mV
Output Voltage
V
O
10.5V
V
I
23V 1mA
I
O
40mA
7.6
-
8.4
V
10.5V
V
I
V
MAX
(Note 2)
1mA
I
O
70mA
7.6
-
8.4
V
Quiescent Current
I
Q
T
J
= 25
C
-
2.0
5.5
mA
Quiescent Current
Change
With Line
I
Q
11V
V
I
23V
-
-
1.5
mA
With Load
I
Q
1mA
I
O
40mA
-
-
0.1
mA
Output Noise Voltage
V
N
T
A
= 25
C, 10Hz
f
100kHz
-
60
-
V/Vo
Temperature Coefficient of V
O
V
O
/
T
I
O
= 5mA
-
-0.8
-
mV/
C
Ripple Rejection
RR
f = 120Hz, 11V
V
I
21V, T
J
= 25
C
39
70
-
dB
Dropout Voltage
V
D
T
J
= 25
C
-
1.7
-
V
MC78LXXA/LM78LXXA/MC78L05AA
4
Electrical Characteristics(MC78L12A/LM78L12A)
(Continued)
(V
I
= 19V, I
O
= 40mA, 0
C
T
J
125
C, C
I
= 0.33
F, C
O
= 0.
1
F, unless otherwise specified. (Note 1)
Note:
1. The maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length
of the package. The data above represent pulse test conditions with junction temperature as indicated at the initiation of tests.
2. Power dissipation P
D
0.75W.
Parameter
Symbol
Conditions
Min.
Typ. Max.
Unit
Output Voltage
V
O
T
J
= 25
C
11.5
12
12.5
V
Line Regulation (Note1)
V
O
T
J
= 25
C
14.5V
V
I
27V
-
20
250
mV
16V
V
I
27V
-
15
200
mV
Load Regulation (Note1)
V
O
T
J
= 25
C
1mA
I
O
100mA
-
20
100
mV
1mA
I
O
40mA
-
10
50
mV
Output Voltage
V
O
14.5V
V
I
27V 1mA
I
O
40mA
11.4
-
12.6
V
14.5V
V
I
V
MAX
(Note 2)
1mA
I
O
70mA
11.4
-
12.6
V
Quiescent Current
I
Q
T
J
= 25
C
-
2.1
6.0
mA
Quiescent Current
Change
With Line
I
Q
16V
V
I
27V
-
-
1.5
mA
With Load
I
Q
1mA
I
O
40mA
-
-
0.1
mA
Output Noise Voltage
V
N
T
A
= 25
C, 10Hz
f
100kHz
-
80
-
V/Vo
Temperature Coefficient of V
O
V
O
/
T
I
O
= 5mA
-
-1.0
-
mV/
C
Ripple Rejection
RR
f = 120Hz, 15V
V
I
25V, T
J
= 25
C
37
65
-
dB
Dropout Voltage
V
D
T
J
= 25
C
-
1.7
-
V
MC78LXXA/LM78LXXA/MC78L05AA
5
Electrical Characteristics(MC78L15A)
(Continued)
(V
I
= 23V, I
O
= 40mA, 0
C
T
J
125
C, C
I
= 0.33
F, C
O
= 0.
1
F, unless otherwise specified. (Note 1)
Note:
1. The maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length
of the package. The data above represent pulse test conditions with junction temperature as indicated at the initiation of tests.
2. Power dissipation P
D
0.75W.
Parameter
Symbol
Conditions
Min.
Typ. Max.
Unit
Output Voltage
V
O
T
J
= 25
C
14.4
15
15.6
V
Line Regulation (Note1)
V
O
T
J
= 25
C
17.5V
V
I
30V
-
25
300
mV
20V
V
I
30V
-
20
250
mV
Load Regulation (Note1)
V
O
T
J
= 25
C
1mA
I
O
100mA
-
25
150
mV
1mA
I
O
40mA
-
12
75
mV
Output Voltage
V
O
17.5V
V
I
30V 1mA
I
O
40mA
14.25
-
15.75
V
17.5V
V
I
V
MAX
(Note 2)
1mA
I
O
70mA
14.25
-
15.75
V
Quiescent Current
I
Q
T
J
= 25
C
-
2.1
6.0
mA
Quiescent Current
Change
With Line
I
Q
20V
V
I
30V
-
-
1.5
mA
With Load
I
Q
1mA
I
O
40mA
-
-
0.1
mA
Output Noise Voltage
V
N
T
A
= 25
C, 10Hz
f
100kHz
-
90
-
V/Vo
Temperature Coefficient of V
O
V
O
/
T I
O
= 5mA
-
-1.3
-
mV/
C
Ripple Rejection
RR
f = 120Hz, 18.5V
V
I
28.5V, T
J
= 25
C
34
60
-
dB
Dropout Voltage
V
D
T
J
= 25
C
-
1.7
-
V
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