BA178M
Regulator ICs
T / FP Series
Standard 78M series, 3-pin regulator
BA178M
T / FP Series
The BA178M
T and BA178M
FP Series are 3-pin, fixed positive output voltage regulators. These regulators are
used to provide a stabilized output voltage from a fluctuating DC input voltage.
There are 11 fixed output voltages, as follows : 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, and 24V.
The maximum current capacity is 0.5A for each of the above voltages.
Applications
Constant voltage power supply
Features
1) Built-in overcurrent protection circuit and thermal shutdown circuit.
2) Excellent ripple regulation.
3) Available in TO-220FP and TO252-3 packages, to meet wide range of applications.
4) Compatible with other manufacturers' regulators.
5) Richly diverse lineup. (5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, 24 V)
Product codes
Output voltage (V)
Product No.
Output voltage (V)
Product No.
5
6
7
8
9
10
BA178M05T / FP
BA178M06T / FP
BA178M07T / FP
BA178M08T / FP
BA178M09T / FP
BA178M10T / FP
12
15
18
20
24
−
BA178M12T / FP
BA178M15T / FP
BA178M18T / FP
BA178M20T / FP
BA178M24T / FP
−
BA178M
Regulator ICs
Internal circuit configuration diagram
(1)
INPUT
R
4
Q
12
R
10
R
8
Q
8
Q
9
D
2
Q
16
Q
15
R
5
Q
13
Q
10
Q
6
R
6
Q
5
R
15
R
2
Q
7
Q
2
Q
14
R
7
R
22
Q
1
R
14
R
10
R
3
D
3
Q
4
Q
3
R
19
R
16
Q
11
Q
18
R
20
R
12
Q
17
R
9
R
13
T / FP Series
R
21
R
17
R
11
(3)
OUTPUT
R
1
D
1
C
1
(2)
COMMON
Absolute maximum ratings
(Ta=25°C)
^Common
specifications for BA178M
Parameter
Applied voltage
Power dissipation
TO220FP
TO252−3
Operating temperature
Storage temperature
(without heat sink).
T / FP seriesp
Limits
35
2.0
∗
1.0
∗
−40
~+85
−55
~+150
Unit
V
W
Symbol
V
IN
Pd
Topr
Tstg
°C
°C
∗
Reduced by 16 mW (TO220FP) and 8 mW (TO252-3) for each increase in Ta of 1
°C
over 25
°C
Recommended operating conditions
(Ta=25°C)
BA178M05T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
7.5
−
Typ.
−
−
Max.
20
0.5
Unit
V
A
BA178M06T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
8.5
−
Typ.
−
−
Max.
21
0.5
Unit
V
A
BA178M07T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
9.5
−
Typ.
−
−
Max.
22
0.5
Unit
V
A
BA178M08T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
10.5
−
Typ.
−
−
Max.
23
0.5
Unit
V
A
BA178M09T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
11.5
−
Typ.
−
−
Max.
24
0.5
Unit
V
A
BA178M10T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
12.5
−
Typ.
−
−
Max.
25
0.5
Unit
V
A
BA178M
Regulator ICs
BA178M12T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
15
−
Typ.
−
−
Max.
27
0.5
Unit
V
A
T / FP Series
BA178M15T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
17.5
−
Typ.
−
−
Max.
30
0.5
Unit
V
A
BA178M18T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
21
−
Typ.
−
−
Max.
33
0.5
Unit
V
A
BA178M20T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
23
−
Typ.
−
−
Max.
33
0.5
Unit
V
A
BA178M24T / FP
Parameter
Input voltage
Output current
Symbol
V
IN
I
O
Min.
27
−
Typ.
−
−
Max.
33
0.5
Unit
V
A
Electrical characteristics
<BA178M05T / FP individual specifications> (unless otherwise noted, Ta=25°C, V
IN
=10V, I
O
=350mA)
Parameter
Output voltage 1
Output voltage 2
Input stability 1
Input stability 2
Ripple rejection ratio
Load regulation 1
Load regulation 2
Temperature coefficient of output voltage
Output noise voltage
Minimum I/O voltage differential
Bias current
Bias current change 1
Bias current change 2
Peak output current
Output short-circuit current
Symbol
V
O1
V
O2
Reg.I
1
Reg.I
2
R.R.
Reg.L
1
Reg.L
2
T
CVO
V
n
V
d
I
b
I
b1
I
b2
I
O
−
P
I
OS
Min.
4.8
4.75
−
−
62
−
−
−
−
−
−
−
−
−
−
Typ.
5.0
−
3
1
78
20
10
−1.0
40
2.0
4.5
−
−
875
0.4
Max.
5.2
5.25
100
50
−
100
50
−
−
−
6.0
0.5
0.8
−
−
Unit
V
V
mV
mV
dB
mV
mV
µV
V
mA
mA
mA
mA
A
I
O
=
350mA
V
IN
=
7.5~20V, I
O
=
5~350mA
V
IN
=
7~25V, I
O
=
200mA
V
IN
=
8~12V, I
O
=
200mA
e
IN
=
1Vrms, f
=
120Hz, I
O
=
100mA
I
O
=
5~500mA
I
O
=
5~200mA
f
=
10Hz~100kHz
I
O
=
500mA
I
O
=
0mA
I
O
=
5~350mA
V
IN
=
8~25V, I
O
=
200mA
T
j
=
25
°C
V
IN
=
25V
Conditions
Measurement
circuit
Fig.1
Fig.1
Fig.1
Fig.1
Fig.2
Fig.1
Fig.1
Fig.1
Fig.3
Fig.4
Fig.5
Fig.5
Fig.5
Fig.1
Fig.6
mV/
°C
I
O
=
5mA, T
j
=
0~125
°C
BA178M
Regulator ICs
T / FP Series
<BA178M06T / FP individual specifications> (unless otherwise noted, Ta=25°C, V
IN
=11V, I
O
=350mA)
Parameter
Output voltage 1
Output voltage 2
Input stability 1
Input stability 2
Ripple rejection ratio
Load regulation 1
Load regulation 2
Temperature coefficient of output voltage
Output noise voltage
Minimum I/O voltage differential
Bias current
Bias current change 1
Bias current change 2
Peak output current
Output short-circuit current
Symbol
V
O1
V
O2
Reg.I
1
Reg.I
2
R.R.
Reg.L
1
Reg.L
2
T
CVO
V
n
V
d
I
b
I
b1
I
b2
I
O
−
P
I
OS
Min.
5.75
5.7
−
−
60
−
−
−
−
−
−
−
−
−
−
Typ.
6.0
−
3
1
74
20
10
−0.5
60
2.0
4.5
−
−
875
0.4
Max.
6.25
6.3
100
50
−
120
60
−
−
−
6.0
0.5
0.8
−
−
Unit
V
V
mV
mV
dB
mV
mV
µV
V
mA
mA
mA
mA
A
I
O
=350mA
V
IN
=8.5
~21V,
I
O
=5
~350mA
V
IN
=8
~25V,
I
O
=200mA
V
IN
=9
~25V,
I
O
=200mA
e
IN
=1Vrms,
f=120Hz, I
O
=100mA
I
O
=5
~500mA
I
O
=5
~200mA
Conditions
Measurement
circuit
Fig.1
Fig.1
Fig.1
Fig.1
Fig.2
Fig.1
Fig.1
Fig.1
Fig.3
Fig.4
Fig.5
Fig.5
Fig.5
Fig.1
Fig.6
mV/
°C
I
O
=5mA,
T
j
=0
~125
°C
f=10Hz~100kHz
I
O
=500mA
I
O
=0mA
I
O
=5
~350mA
V
IN
=9
~25V,
I
O
=200mA
T
j
=25°C
V
IN
=25V
<BA178M07T / FP individual specifications> (unless otherwise noted, Ta=25°C, V
IN
=13V, I
O
=350mA)
Parameter
Output voltage 1
Output voltage 2
Input stability 1
Input stability 2
Ripple rejection ratio
Load regulation 1
Load regulation 2
Temperature coefficient of output voltage
Output noise voltage
Minimum I/O voltage differential
Bias current
Bias current change 1
Bias current change 2
Peak output current
Output short-circuit current
Symbol
V
O1
V
O2
Reg.I
1
Reg.I
2
R.R.
Reg.L
1
Reg.L
2
T
CVO
V
n
V
d
I
b
I
b1
I
b2
I
O
−
P
I
OS
Min.
6.7
6.65
−
−
57
−
−
−
−
−
−
−
−
−
−
Typ.
7.0
−
4
1
71
20
10
−0.5
70
2.0
4.5
−
−
875
0.4
Max.
7.3
7.35
100
50
−
140
70
−
−
−
6.0
0.5
0.8
−
−
Unit
V
V
mV
mV
dB
mV
mV
mV/
°C
µV
V
mA
mA
mA
mA
A
I
O
=350mA
V
IN
=9.5
~22V,
I
O
=5
~350mA
V
IN
=9
~25V,
I
O
=200mA
V
IN
=10
~25V,
I
O
=200mA
e
IN
=1Vrms,
f=120Hz, I
O
=100mA
I
O
=5
~500mA
I
O
=5
~200mA
I
O
=5mA,
T
j
=0
~125
°C
f=10Hz~100kHz
I
O
=500mA
I
O
=0mA
I
O
=5
~350mA
V
IN
=10
~25V,
I
O
=200mA
T
j
=25°C
V
IN
=25V
Conditions
Measurement
circuit
Fig.1
Fig.1
Fig.1
Fig.1
Fig.2
Fig.1
Fig.1
Fig.1
Fig.3
Fig.4
Fig.5
Fig.5
Fig.5
Fig.1
Fig.6
BA178M
Regulator ICs
T / FP Series
<BA178M08T / FP individual specifications> (unless otherwise noted, Ta=25°C, V
IN
=14V, I
O
=350mA)
Parameter
Output voltage 1
Output voltage 2
Input stability 1
Input stability 2
Ripple rejection ratio
Load regulation 1
Load regulation 2
Temperature coefficient of output voltage
Output noise voltage
Minimum I/O voltage differential
Bias current
Bias current change 1
Bias current change 2
Peak output current
Output short-circuit current
Symbol
V
O1
V
O2
Reg.I
1
Reg.I
2
R.R.
Reg.L
1
Reg.L
2
T
CVO
V
n
V
d
I
b
I
b1
I
b2
I
O
−
P
I
OS
Min.
7.7
7.6
−
−
56
−
−
−
−
−
−
−
−
−
−
Typ.
8.0
−
4
1
69
20
10
−0.5
80
2.0
4.5
−
−
875
0.4
Max.
8.3
8.4
100
50
−
160
80
−
−
−
6.0
0.5
0.8
−
−
Unit
V
V
mV
mV
dB
mV
mV
µV
V
mA
mA
mA
mA
A
I
O
=350mA
V
IN
=10.5
~23V,
I
O
=5
~350mA
V
IN
=10.5
~25V,
I
O
=200mA
V
IN
=11
~12V,
I
O
=200mA
e
IN
=1Vrms,
f=120Hz, I
O
=100mA
I
O
=5
~500mA
I
O
=5
~200mA
Conditions
Measurement
circuit
Fig.1
Fig.1
Fig.1
Fig.1
Fig.2
Fig.1
Fig.1
Fig.1
Fig.3
Fig.4
Fig.5
Fig.5
Fig.5
Fig.1
Fig.6
mV/
°C
I
O
=5mA,
T
j
=0
~125
°C
f=10Hz~100kHz
I
O
=500mA
I
O
=0mA
I
O
=5
~350mA
V
IN
=10.5
~25V,
I
O
=200mA
T
j
=25°C
V
IN
=25V
<BA178M09T / FP individual specifications> (unless otherwise noted, Ta=25°C, V
IN
=15V, I
O
=350mA)
Parameter
Output voltage 1
Output voltage 2
Input stability 1
Input stability 2
Ripple rejection ratio
Load regulation 1
Load regulation 2
Temperature coefficient of output voltage
Output noise voltage
Minimum I/O voltage differential
Bias current
Bias current change 1
Bias current change 2
Peak output current
Output short-circuit current
Symbol
V
O1
V
O2
Reg.I
1
Reg.I
2
R.R.
Reg.L
1
Reg.L
2
T
CVO
V
n
V
d
I
b
I
b1
I
b2
I
O
−
P
I
OS
Min.
8.6
8.55
−
−
56
−
−
−
−
−
−
−
−
−
−
Typ.
9.0
−
4
2
67
20
10
−0.5
90
2.0
4.5
−
−
875
0.17
Max.
9.4
9.45
100
50
−
180
90
−
−
−
6.0
0.5
0.8
−
−
Unit
V
V
mV
mV
dB
mV
mV
µV
V
mA
mA
mA
mA
A
I
O
=350mA
V
IN
=11.5
~24V,
I
O
=5
~350mA
V
IN
=11.5
~26V,
I
O
=200mA
V
IN
=12
~25V,
I
O
=200mA
e
IN
=1Vrms,
f=120Hz, I
O
=100mA
I
O
=5
~500mA
I
O
=5
~200mA
Conditions
Measurement
circuit
Fig.1
Fig.1
Fig.1
Fig.1
Fig.2
Fig.1
Fig.1
Fig.1
Fig.3
Fig.4
Fig.5
Fig.5
Fig.5
Fig.1
Fig.6
mV/
°C
I
O
=5mA,
T
j
=0
~125
°C
f=10Hz~100kHz
I
O
=500mA
I
O
=0mA
I
O
=5
~350mA
V
IN
=12
~25V,
I
O
=200mA
T
j
=25°C
V
IN
=30V
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