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Part Number MC78Mxx

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©2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.5
Features
· Output Current up to 0.5A
· Output Voltages of 5, 6, 8, 12, 15, 18, 24V
· Thermal Overload Protection
· Short Circuit Protection
· Output Transistor Safe Operating Area (SOA)Protection
Description
The MC78MXX/LM78MXX series of three-terminal
positive regulators are available in the TO-220/D-PAK
package with several fixed output voltages making it useful
in a wide range of applications.
TO-220
D-PAK
1. Input 2. GND 3. Output
1
1
GND
GND
Internal Block Digram
OUTPUT
3
R1
R2
GND
2
1
INPUT
SERIES
PASS
ELEMENT
SOA
PROTECTION
CURRENT
GENERATOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
ERROR
AMPLIFIER
THERMAL
PROTECTION
MC78MXX/LM78MXX
3-Terminal 0.5A Positive Voltage Regulator
MC78MXX/LM78MXX
2
Absolute Maximum Ratings
Note:
1. Thermal resistance test board
Size: 76.2mm * 114.3mm * 1.6mm(1S0P)
JEDEC standard: JESD51-3, JESD51-7
2. Assume no ambient airflow
Electrical Characteristics (MC78M05/LM78M05)
(Refer to the test circuits, 0
<
T
J
<
+125
°
C, I
O
=350mA, V
I
=10V, unless otherwise specified, C
I
= 0.33
µ
F, C
O
=0.1
µ
F)
Note:
3. 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.
Parameter
Symbol
Value
Unit
Input Voltage (for V
O
= 5V to 18V)
(for V
O
= 24V)
V
I
V
I
35
40
V
V
Thermal Resistance Junction-Case (Note1)
TO-220 (Tc = +25
°
C)
R
JC
2.5
°
C/W
Thermal Resistance Junction-Air (Note1, 2)
TO-220 (Ta = +25
°
C)
D-PAK (Ta = +25
°
C)
R
JA
66
92
°
C/W
Operating Junction Temperature Range
T
OPR
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
5.2
V
I
O
= 5mA to 350mA
V
I
= 7V to 20V
4.75
5
5.25
Line Regulation (Note3)
V
O
I
O
= 200mA
T
J
=+25
°
C
V
I
= 7V to 25V
-
-
100
mV
V
I
= 8V to 25V
-
-
50
Load Regulation (Note3)
V
O
I
O
= 5mA to 0.5A, T
J
=+25
°
C
-
-
100
mV
I
O
= 5mA to 200mA, T
J
=+25
°
C
-
-
50
Quiescent Current
I
Q
T
J
=+25
°
C
-
4.0
6.0
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.5
mA
I
O
= 200mA
V
I
= 8V to 25V
-
-
0.8
Output Voltage Drift
V/
T
I
O
= 5mA
T
J
= 0 to +125
°
C
-
-0.5
-
mV/
°
C
Output Noise Voltage
V
N
f = 10Hz to 100kHz
-
40
-
µ
V/Vo
Ripple Rejection
RR
f = 120Hz, I
O
= 300mA
V
I
= 8V to 18V, T
J
=+25
°
C
-
80
-
dB
Dropout Voltage
V
D
T
J
=+25
°
C, I
O
= 500mA
-
2
-
V
Short Circuit Current
I
SC
T
J
=+25
°
C, V
I
= 35V
-
300
-
mA
Peak Current
I
PK
T
J
=+25
°
C
-
700
-
mA
MC78MXX/LM78MXX
3
Electrical Characteristics (MC78M06)
(Continued)
(Refer to the test circuits, 0
<
T
J
<
+125
°
C, I
O
=350mA, V
I
=11V, unless otherwise specified, C
I
=0.33
µ
F, C
O
=0.1
µ
F)
Note:
1. 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.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
= +25
°
C
5.75
6
6.25
V
I
O
= 5mA to 350mA
V
I
= 8V to 21V
5.7
6
6.3
Line Regulation (Note1)
V
O
I
O
= 200mA
T
J
= +25
°
C
V
I
= 8V to 25V
-
-
100
mV
V
I
= 9V to 25V
-
-
50
Load Regulation (Note1)
V
O
I
O
= 5mA to 0.5A, T
J
= +25
°
C
-
-
120
mV
I
O
= 5mA to 200mA, T
J
= +25
°
C
-
-
60
Quiescent Current
I
Q
T
J
= +25
°
C
-
4.0
6.0
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.5
mA
I
O
= 200mA
V
I
= 9V to 25V
-
-
0.8
Output Voltage Drift
V/
T
I
O
= 5mA
T
J
= 0 to +125
°
C
-
-0.5
-
mV/
°
C
Output Noise Voltage
V
N
f = 10Hz to 100kHz
-
45
-
µ
V/Vo
Ripple Rejection
RR
f = 120Hz, I
O
= 300mA
V
I
= 9V to 19V, T
J
=+25
°
C
-
80
-
dB
Dropout Voltage
V
D
T
J
=+25
°
C, I
O
= 500mA
-
2
-
V
Short Circuit Current
I
SC
T
J
= +25
°
C, V
I
= 35V
-
300
-
mA
Peak Current
I
PK
T
J
=+25
°
C
-
700
-
mA
MC78MXX/LM78MXX
4
Electrical Characteristics (MC78M08)
(Continued)
(Refer to the test circuits, 0
<
T
J
<
+125
°
C, I
O
=350mA, V
I
=14V, unless otherwise specified, C
I
= 0.33
µ
F, C
O
=0.1
µ
F)
Note:
1. 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.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
=+25
°
C
7.7
8
8.3
V
I
O
= 5mA to 350mA
V
I
= 10.5V to 23V
7.6
8
8.4
Line Regulation (Note1)
V
O
I
O
= 200mA
T
J
=+25
°
C
V
I
= 10.5V to 25V
-
-
100
mV
V
I
= 11V to 25V
-
-
50
Load Regulation (Note1)
V
O
I
O
= 5mA to 0.5A, T
J
=+25
°
C
-
-
160
mV
I
O
= 5mA to 200mA, T
J
=+25
°
C
-
-
80
Quiescent Current
I
Q
T
J
= +25
°
C
-
4.0
6.0
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.5
mA
I
O
= 200mA
V
I
= 10.5V to 25V
-
-
0.8
Output Voltage Drift
RR
I
O
= 5mA
T
J
= 0 to +125
°
C
-
-
0.5
-
mV/
°
C
Output Noise Voltage
V
N
f = 10Hz to 100kHz
-
52
-
µ
V/Vo
Ripple Rejection
RR
f = 120Hz, I
O
= 300mA
V
I
= 11.5V to 21.5V, T
J
=+25
°
C
-
80
-
dB
Dropout Voltage
V
D
T
J
= +25
°
C, I
O
= 500mA
-
2
-
V
Short Circuit Current
I
SC
T
J
= +25
°
C, V
I
= 35V
-
300
-
mA
Peak Current
I
PK
T
J
= +25
°
C
-
700
-
mA
MC78MXX/LM78MXX
5
Electrical Characteristics (MC78M12)
(Continued)
(Refer to the test circuits, 0
<
T
J
<
+125
°
C, I
O
=350mA, V
I
=19V, unless otherwise specified, C
I
=0.33
µ
F, C
O
=0.1
µ
F)
Note:
1. 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.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
= +25
°
C
11.5
12
12.5
V
I
O
= 5mA to 350mA
V
I
= 14.5V to 27V
11.4
12
12.6
Line Regulation (Note1)
V
O
I
O
= 200mA
T
J
= +25
°
C
V
I
= 14.5V to 30V
-
-
100
mV
V
I
= 16V to 30V
-
-
50
Load Regulation (Note1)
V
O
I
O
= 5mA to 0.5A, T
J
= +25
°
C
-
-
240
mV
I
O
= 5mA to 200mA, T
J
= +25
°
C
-
-
120
Quiescent Current
I
Q
T
J
=+25
°
C
-
4.1
6.0
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.5
mA
I
O
= 200mA
V
I
= 14.5V to 30V
-
-
0.8
Output Voltage Drift
V/
T
I
O
= 5mA
T
J
= 0 to +125
°
C
-
-0.5
-
mV/
°
C
Output Noise Voltage
V
N
f = 10Hz to 100kHz
-
75
-
µ
V/Vo
Ripple Rejection
RR
f = 120Hz, I
O
= 300mA
V
I
= 15V to 25V, T
J
=+25
°
C
-
80
-
dB
Dropout Voltage
V
D
T
J
=+25
°
C, I
O
= 500mA
-
2
-
V
Short Circuit Current
I
SC
T
J
= +25
°
C, V
I
= 35V
-
300
-
mA
Peak Current
I
PK
T
J
= +25
°
C
-
700
-
mA