78M05A~78M24A
3-Terminal 0.5A Positive Voltage Regulator
Description
The 78MXXA series of three-terminal
TO-252
package with several fixed output voltages making it useful
in a wide range of applications.
GND
Features
•
•
•
•
•
1
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
1. Input 2. GND 3. Output
Internal Block Digram
INPUT
SERIES
PASS
ELEMENT
1
SOA
PROTECTION
CURRENT
GENERATOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
OUTPUT
3
R1
ERROR
AMPLIFIER
R2
THERMAL
PROTECTION
GND
2
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1
78M05A~78M24A
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
VI
VI
35
40
V
V
Thermal Resistance Junction-Case (Note1)
TO-220 (Tc = +25°C)
RθJC
2.5
°C/W
Thermal Resistance Junction-Air (Note1, 2)
TO-220 (Ta = +25°C)
D-PAK (Ta = +25°C)
RθJA
66
92
°C/W
Operating Junction Temperature Range
TOPR
0 ~ +150
°C
Storage Temperature Range
TSTG
-65 ~ +150
°C
Input Voltage (for VO = 5V to 18V)
(for VO = 24V)
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 (78M05A)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note3)
∆VO
Load Regulation (Note3)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
∆IQ
∆V/∆T
Conditions
Min.
Typ.
Max.
TJ = +25°C
4.8
5
5.2
IO = 5mA to 350mA
VI = 7V to 20V
4.75
5
5.25
VI = 7V to 25V
-
-
100
VI = 8V to 25V
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
100
IO = 5mA to 200mA, TJ =+25 °C
-
-
50
TJ =+25°C
-
4.0
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 8V to 25V
-
-
0.8
IO = 5mA
TJ = 0 to +125°C
-
-0.5
-
mV/°C
IO = 200mA
TJ =+25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
40
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 8V to 18V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ =+25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ =+25°C
-
700
-
mA
Note:
3. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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2
78M05A~78M24A
Electrical Characteristics (78M06A)
(Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI =11V, unless otherwise specified, CI=0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
∆IQ
∆V/∆T
Conditions
Min.
Typ.
Max.
TJ = +25°C
5.75
6
6.25
IO = 5mA to 350mA
VI = 8V to 21V
5.7
6
6.3
VI = 8V to 25V
-
-
100
VI = 9V to 25V
-
-
50
IO = 5mA to 0.5A, TJ = +25°C
-
-
120
IO = 5mA to 200mA, TJ = +25°C
-
-
60
TJ = +25°C
-
4.0
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 9V to 25V
-
-
0.8
IO = 5mA
TJ = 0 to +125°C
-
-0.5
-
mV/°C
IO = 200mA
TJ = +25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
45
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 9V to 19V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI= 35V
-
300
-
mA
Peak Current
IPK
TJ =+25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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3
78M05A~78M24A
Electrical Characteristics (78M08A)
(Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=14V, unless otherwise specified, CI = 0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
IQ
Conditions
Min.
Typ.
Max.
TJ =+25°C
7.7
8
8.3
IO = 5mA to 350mA
VI = 10.5V to 23V
7.6
8
8.4
VI = 10.5V to 25V
-
-
100
VI = 11V to 25V
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
160
IO = 5mA to 200mA, TJ =+25°C
-
-
80
TJ = +25°C
-
4.0
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 10.5V to 25V
-
-
0.8
IO = 200mA
TJ =+25°C
Unit
V
mV
mV
mA
Quiescent Current Change
∆IQ
Output Voltage Drift
RR
IO = 5mA
TJ = 0 to +125°C
-
−0.5
-
mV/°C
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
52
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 11.5V to 21.5V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ = +25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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4
78M05A~78M24A
Electrical Characteristics (78M12A)
(Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=19V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
Min.
Typ.
Max.
TJ = +25°C
11.5
12
12.5
IO = 5mA to 350mA
VI = 14.5V to 27V
11.4
12
12.6
VI = 14.5V to 30V
-
-
100
VI = 16V to 30V
-
-
50
IO = 5mA to 0.5A, TJ = +25°C
-
-
240
IO = 5mA to 200mA, TJ = +25°C
-
-
120
TJ =+25°C
-
4.1
6.0
IO = 5mA to 350mA
-
-
0.5
∆IQ
IO = 200mA
VI = 14.5V to 30V
-
-
0.8
∆V/∆T
IO = 5mA
TJ = 0 to +125°C
-
-0.5
-
mV/°C
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
Conditions
IO = 200mA
TJ = +25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
75
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 15V to 25V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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5
78M05A~78M24A
Electrical Characteristics (78M15A)
(Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=23V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
Min.
Typ.
Max.
TJ = +25°C
14.4
15
15.6
IO = 5mA to 350mA
VI = 17.5V to 30V
14.25
15
15.75
VI = 17.5V to 30V
-
-
100
VI = 20V to 30V
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
300
IO = 5mA to 200mA, TJ =+25°C
-
-
150
TJ = +25°C
-
4.1
6.0
IO = 5mA to 350mA
-
-
0.5
∆IQ
IO = 200mA
VI = 17.5V to 30V
-
-
0.8
∆V/∆T
IO = 5mA
TJ = 0 to +125°C
-
-1
-
mV/°C
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
Conditions
IO = 200mA
TJ =+25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
100
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 18.5V to 28.5V, TJ =+25 °C
-
70
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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6
78M05A~78M24A
Electrical Characteristics (78M18A)
(Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=26V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Min. Typ.
Max.
TJ = +25°C
17.3
18
18.7
IO = 5mA to 350mA
VI = 20.5V to 33V
17.1
18
18.9
VI = 21V to 33V
-
-
100
VI = 24V to 33V
-
-
50
IO = 5mA to 0.5A, TJ = +25°C
-
-
360
IO = 5mA to 200mA, TJ = +25°C
-
-
180
TJ = +25°C
-
4.2
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 21V to 33V
-
-
0.8
IO = 5mATJ = 0 to 125°C
-
-1.1
-
mV/°C
VN
f = 10Hz to 100kHz
-
100
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO= 300mA , VI = 22V to 32V
TJ =+25 °C
-
70
-
dB
Dropout Voltage
VD
TJ = +25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VΟ
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
IQ
∆IQ
∆V/∆T
Conditions
IO = 200mA
TJ = +25°C
Unit
V
mV
mV
mA
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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7
78M05A~78M24A
Electrical Characteristics (78M24A)
(Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=33V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
23
24
25
22.8
24
25.2
IO = 200mA VI = 27V to 38V
TJ =+25°C VI = 28V to 38V
-
-
100
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
480
IO = 5mA to 200mA, TJ =+25°C
-
-
240
TJ = +25°C
-
4.2
6.0
IO = 5mA to 350mA
-
-
0.5
∆IQ
IO = 200mA
VI = 27V to 38V
-
-
0.8
∆V/∆T
IO = 5mA
TJ = 0 to +125°C
-
-1.2
-
mV/°C
TJ =+25°C
Output Voltage
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
IO = 5mA to 350mA
VI = 27V to 38V
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
170
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 28V to 38V, TJ =+25 °C
-
70
-
dB
Dropout Voltage
VD
TJ = +25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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8
78M05A~78M24A
Typical Applications
3
1
VI
VO
78MXXA
CI
2
CO
0.3µF
0.1µF
Figure 1. Fixed Output Regulator
3
1
VI
78MXXA
CI
2
0.33µF
CO
VXX
0.1µF
IO
IO
R1
Vxx
IO = R1 +IO
Figure 2. Constant Current Regulator
Notes:
1. To specify an output voltage, substitute voltage value for "XX"
2. Although no output capacitor is needed for stability, it does improve transient response.
3. CI is required if regulator is located an appreciable distance from power Supply filter
3
1
VI
VO
78MXXA
CI
2
0.33µF
CO
VXX
IR1 ≥ 5IO
VO = VXX (1+R2/R1) +IOR2
Figure 3. Circuit for Increasing Output Voltage
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R1
0.1µF
IO
9
R2
78M05A~78M24A
1
VI
3
VO
78MXXA
2
CI
CO
0.33µF
2
7
6
0.1µF
LM741
3
10kΩ
4
Figure 4. Adjustable Output Regulator (7 to 30V)
13V < VI < 25V
1
VI
3
VO
78MXXA
C1
R4
910Ω
2
VXX
0.33µF
R5
9.1kΩ
6
4
-7 < -VI < 17V
Figure 5. 0.5 to 10V Regulator
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10
C2
7 _ 2
LM741
+ 3 R3
R1
0.1µF
10kΩ
VO = Vxx
R4
R1