Rohm BA17806T Standard 78 series, 3-pin regulator Datasheet

BA178!!T / FP series
Regulator ICs
Standard 78 series, 3-pin regulator
BA178!!
!!T
!! / FP series
The BA178!!T and BA178!!FP series are 3pin 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 1A for each of the above voltages.
"Application
Constant voltage power supply
"Features
1) Built-in overcurrent protection circuit and thermal shutdown circuit.
2) Excellent ripple regulation.
3) Available in TO220FP 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, 24V).
"Product codes
Output voltage (V)
Product name
Output voltage (V)
Product name
5
BA17805T / FP
12
BA17812T / FP
6
BA17806T / FP
15
BA17815T / FP
7
BA17807T / FP
18
BA17818T / FP
8
BA17808T / FP
20
BA17820T / FP
9
BA17809T / FP
24
BA17824T / FP
10
BA17810T / FP
−
−
BA178!!T / FP series
Regulator ICs
"Internal circuit configuration diagram
(1)
INPUT
R4
R10
R8
R9
R13
Q8
Q9
Q12
D2
Q16
Q15
R5
Q13
R21
R12
Q17
R17
Q10
R11 (3)
OUTPUT
Q6
R6
Q5
R15
R2
R1
R16
C1
R20
Q11
D1
Q7
Q18
Q4
Q2
Q14
Q1
Q3
R19
R14
R7
R22
R18
R3
D3
(2)
COMMON
"Absolute maximum ratings (Ta=25°C)
^Common specifications for BA178!!T / FP seriesp
Parameter
Symbol
Applied voltage
Power
dissipation
Limits
35
VIN
TO220FP
2.0 ∗
Pd
TO252-3
1.0 ∗
Unit
V
W
Operating temperature
Topr
−40∼+85
˚C
Storage temperature
Tstg
−55∼+150
˚C
∗
Reduced by 16 mW / ˚C (TO220FP) and 8 mW / ˚C (TO252-3) for each increase in Ta of 1˚C over 25˚C
(without heat sink).
"Recommended operating conditions (Ta=25°C)
BA17806T / FP
BA17805T / FP
Parameter
Symbol
Min.
Typ.
Max.
Unit
Parameter
Symbol
Min.
Typ.
Max.
Input voltage
VIN
7.5
−
25
V
Input voltage
VIN
8.5
−
21
V
IO
−
−
1
A
Output current
IO
−
−
1
A
Parameter
Symbol
Min.
Typ.
Max.
Unit
Parameter
Symbol
Min.
Typ.
Max.
Unit
Input voltage
VIN
9.5
−
22
V
Input voltage
VIN
10.5
−
23
V
IO
−
−
1
A
Output current
IO
−
−
1
A
Output current
BA17807T / FP
Output current
Unit
BA17808T / FP
BA178!!T / FP series
Regulator ICs
BA17810T / FP
BA17809T / FP
Parameter
Symbol
Min.
Typ.
Max.
Input voltage
VIN
11.5
−
IO
−
−
Output current
Unit
Parameter
Symbol
Min.
Typ.
Max.
Unit
26
V
Input voltage
VIN
12.5
−
25
V
1
A
Output current
IO
−
−
1
A
BA17812T / FP
BA17815T / FP
Parameter
Symbol
Min.
Typ.
Max.
Unit
Parameter
Symbol
Min.
Typ.
Max.
Unit
Input voltage
VIN
15
−
27
V
Input voltage
VIN
17.5
−
30
V
IO
−
−
1
A
Output current
IO
−
−
1
A
Parameter
Symbol
Min.
Typ.
Max.
Unit
Parameter
Symbol
Min.
Typ.
Max.
Unit
Input voltage
VIN
21
−
33
V
Input voltage
VIN
23
−
33
V
IO
−
−
1
A
Output current
IO
−
−
1
A
Output current
BA17818T / FP
BA17820T / FP
Output current
BA17824T / FP
Parameter
Symbol
Min.
Typ.
Max.
Unit
Input voltage
VIN
27
−
33
V
Output current
IO
−
−
1
A
"Electrical characteristics
<BA17805T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=10V, IO=500mA)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Measurement
circuit
Output voltage 1
VO1
4.8
5.0
5.2
V
IO=500mA
Fig.1
Output voltage 2
VO2
4.75
−
5.25
V
VIN=7.5∼20V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
3
100
mV
VIN =7∼25V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
1
50
mV
VIN =8∼12V, IO=500mA
Fig.1
R.R.
62
78
−
dB
eIN =1Vrms, f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
15
100
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
5
50
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
TCVO
−
−1.0
−
Output noise voltage
Vn
−
40
−
Minimum I/O voltage differential
Vd
−
2.0
Bias current
Ib
−
4.5
Bias current change 1
Ib1
−
−
0.5
Bias current change 2
Ib2
−
−
0.8
Peak output current
IO-P
−
1.7
−
Output short-circuit current
IOS
−
0.6
−
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj =0∼125˚C
Fig.1
µV
f=10Hz∼100kHz
Fig.3
−
V
IO=1A
Fig.4
8.0
mA
IO=0mA
Fig.5
mA
IO=5mA∼1A
Fig.5
mA
VIN=8∼25V
Fig.5
A
Tj=25˚C
Fig.1
A
VIN =25V
Fig.6
BA178!!T / FP series
Regulator ICs
<BA17806T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=11V, IO=500mA)
Parameter
Min.
Typ.
Max.
Output voltage 1
VO1
5.75
6.0
6.25
V
IO=500mA
Fig.1
Output voltage 2
VO2
5.7
−
6.3
V
VIN=8.5∼21V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
4
120
mV
VIN=8∼25V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
2
60
mV
VIN=9∼13V, IO=500mA
Fig.1
R.R.
59
73
−
dB
eIN=1Vrms, f=120Hz, IO=100mA
Fig.2
Load regulation 1
Reg.L1
−
16
120
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
6
60
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
Unit
Conditions
Measurement
circuit
Symbol
TCVO
−
−0.5
−
Output noise voltage
Vn
−
60
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN=8.5∼25V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj=25˚C
Fig.1
Output short-circuit current
IOS
−
0.6
−
A
VIN=25V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj=0∼125˚C
Fig.1
<BA17807T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=13V, IO=500mA)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Measurement
circuit
Output voltage 1
VO1
6.7
7.0
7.3
V
IO=500mA
Fig.1
Output voltage 2
VO2
6.65
−
7.35
V
VIN=9.5∼22V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
5
140
mV
VIN=9∼25V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
2
70
mV
VIN=10∼15V, IO=500mA
Fig.1
R.R.
57
69
−
dB
eIN=1Vrms, f=120Hz, IO=100mA
Fig.2
Load regulation 1
Reg.L1
−
17
140
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
6
70
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
TCVO
−
−0.5
−
Output noise voltage
Vn
−
70
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.5
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN=9.5∼25V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj=25˚C
Fig.1
Output short-circuit current
IOS
−
0.6
−
A
VIN=25V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj=0∼125˚C
Fig.1
BA178!!T / FP series
Regulator ICs
<BA17808T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=14V, IO=500mA)
Parameter
Symbol Min.
Typ.
Max.
Unit
Conditions
Measurement
circuit
Output voltage 1
VO1
7.7
8.0
8.3
V
IO=500mA
Fig.1
Output voltage 2
VO2
7.6
−
8.4
V
VIN=10.5∼23V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
5
160
mV
VIN=10.5∼25V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
3
80
mV
VIN=11∼17V, IO=500mA
Fig.1
R.R.
56
65
−
dB
eIN=1Vrms, f=120Hz, IO=100mA
Fig.2
Load regulation 1
Reg.L1
−
19
160
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
7
80
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
TCVO
−
−0.5
−
Output noise voltage
Vn
−
80
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN=10.5∼25V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj=25˚C
Fig.1
Output short-circuit current
IOS
−
0.6
−
A
VIN=25V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj=0∼125˚C
Fig.1
<BA17809T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=15V, IO=500mA)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Measurement
circuit
Output voltage 1
VO1
8.6
9.0
9.4
V
IO=500mA
Fig.1
Output voltage 2
VO2
8.55
−
9.45
V
VIN=11.5∼26V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
6
180
mV
VIN=11.5∼26V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
4
90
mV
VIN=13∼19V, IO =500mA
Fig.1
R.R.
56
64
−
dB
eIN=1Vrms, f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
20
180
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
8
90
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
TCVO
−
−0.5
−
Output noise voltage
Vn
−
90
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage diffrential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN =11.5∼26V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj=25˚C
Fig.1
Output short-circuit current
IOS
−
0.3
−
A
VIN=30V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, T j =0∼125˚C
Fig.1
BA178!!T / FP series
Regulator ICs
<BA17810T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=16V, IO=500mA)
Parameter
Min.
Typ.
Output voltage 1
VO1
9.6
10.0
10.4
V
IO=500mA
Fig.1
Output voltage 2
VO2
9.5
−
10.5
V
VIN=12.5∼25V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
7
200
mV
VIN=12.5∼27V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
4
100
mV
VIN=14∼20V, IO =500mA
Fig.1
R.R.
55
64
−
dB
eIN=1Vrms, f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
21
200
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
8
90
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
Max.
TCVO
−
−0.5
−
Output noise voltage
Vn
−
100
−
Minimum I/O voltage differential
Vd
−
2.0
Bias current
Ib
−
4.5
Bias current change 1
Ib1
−
−
Bias current change 2
Ib2
−
Peak output current
IO-P
−
Output short-circuit current
IOS
−
0.3
Temperature coefficient of output voltage
Unit
Conditions
Measurement
circuit
Symbol
mV/˚C IO=5mA, Tj =0∼125˚C
Fig.1
µV
f=10Hz∼100kHz
Fig.3
−
V
IO=1A
Fig.4
8.0
mA
IO=0mA
Fig.5
0.5
mA
IO=5mA∼1A
Fig.5
−
0.8
mA
VIN=12.5∼27V
Fig.5
1.7
−
A
Tj =25˚C
Fig.1
−
A
VIN=30V
Fig.6
<BA17812T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=19V, IO=500mA)
Parameter
Min.
Typ.
Output voltage 1
VO1
11.5
12.0
12.5
V
IO=500mA
Fig.1
Output voltage 2
VO2
11.4
−
12.6
V
VIN=15∼27V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
8
240
mV
VIN=14.5∼30V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
5
120
mV
VIN=16∼22V, IO =500mA
Fig.1
R.R.
55
63
−
dB
eIN=1Vrms, f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
23
240
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
10
120
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
Max.
Unit
Conditions
Measurement
circuit
Symbol
TCVO
−
−0.5
−
Output noise voltage
Vn
−
110
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN=14.5∼30V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj=25˚C
Fig.1
Output short-circuit current
IOS
−
0.3
−
A
VIN=30V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, T j =0∼125˚C
Fig.1
BA178!!T / FP series
Regulator ICs
<BA17815T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=23V, IO=500mA)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Measurement
circuit
Output voltage 1
VO1
14.4
15.0
15.6
V
IO=500mA
Fig.1
Output voltage 2
VO2
14.25
−
15.75
V
VIN =17.5∼30V, IO=5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
9
300
mV
VIN=17.5∼30V, IO=500mA
Fig.1
Input stability 2
Reg.I2
−
5
150
mV
VIN=20∼26V, IO =500mA
Fig.1
R.R.
54
62
−
dB
eIN=1Vrms , f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
27
300
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
10
150
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
TCVO
−
−0.6
−
Output noise voltage
Vn
−
125
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN=17.5∼30V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj =25˚C
Fig.1
Output short-circuit current
IOS
−
0.3
−
A
VIN =30V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj =0∼125˚C
Fig.1
<BA17818T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=27V, IO=500mA)
Parameter
Min.
Typ.
Output voltage 1
VO1
17.3
18.0
18.7
V
IO=500mA
Fig.1
Output voltage 2
VO2
17.1
−
18.9
V
VIN =21∼33V, IO =5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
10
360
mV
VIN =21∼33V, IO =500mA
Fig.1
Input stability 2
Reg.I2
−
5
180
mV
VIN=24∼33V, IO =500mA
Fig.1
R.R.
55
61
−
dB
eIN =1Vrms, f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
30
360
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
12
180
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
Max.
Unit
Conditions
Measurement
circuit
Symbol
TCVO
−
−0.6
−
Output noise voltage
Vn
−
140
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN =21∼33V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj =25˚C
Fig.1
Output short-circuit current
IOS
−
0.3
−
A
VIN =30V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj=0∼125˚C
Fig.1
BA178!!T / FP series
Regulator ICs
<BA17820T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=29V, IO=500mA)
Parameter
Min.
Typ.
Max.
Unit
Output voltage 1
VO1
19.2
20.0
20.8
V
IO=500mA
Fig.1
Output voltage 2
VO2
19.0
−
21.0
V
VIN=23∼33V, IO =5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
12
400
mV
VIN=23∼33V, IO =500mA
Fig.1
Input stability 2
Reg.I2
−
7
200
mV
VIN=26∼32V, IO =500mA
Fig.1
R.R.
53
60
−
dB
eIN=1Vrms, f=120Hz, IO=100mA
Fig.2
Load regulation 1
Reg.L1
−
32
400
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
14
200
mV
IO=250∼750mA
Fig.1
Ripple rejection ratio
Conditions
Measurement
circuit
Symbol
TCVO
−
−0.7
−
Output noise voltage
Vn
−
150
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.5
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN=23∼33V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj =25˚C
Fig.1
Output short-circuit current
IOS
−
0.3
−
A
VIN=30V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj =0∼125˚C
Fig.1
<BA17824T / FP individual specifications> (unless otherwise noted, Ta=25°C, VIN=33V, IO=500mA)
Parameter
Output voltage 1
Conditions
Measurement
circuit
Symbol
Min.
Typ.
Max.
Unit
VO1
23.0
24.0
25.0
V
IO=500mA
Fig.1
VO2
22.8
−
25.2
V
VIN=27∼33V, IO =5mA∼1A
Fig.1
Input stability 1
Reg.I1
−
15
480
mV
VIN=27∼33V, IO =500mA
Fig.1
Input stability 2
Reg.I2
−
10
240
mV
VIN=30∼33V, IO =500mA
Fig.1
R.R.
50
58
−
dB
eIN=1Vrms, f=120Hz, IO =100mA
Fig.2
Load regulation 1
Reg.L1
−
37
480
mV
IO=5mA∼1A
Fig.1
Load regulation 2
Reg.L2
−
15
240
mV
IO=250∼750mA
Fig.1
Output voltage 2
Ripple rejection ratio
TCVO
−
−0.7
−
Output noise voltage
Vn
−
180
−
µV
f=10Hz∼100kHz
Fig.3
Minimum I/O voltage differential
Vd
−
2.0
−
V
IO=1A
Fig.4
Bias current
Ib
−
4.7
8.0
mA
IO=0mA
Fig.5
Bias current change 1
Ib1
−
−
0.5
mA
IO=5mA∼1A
Fig.5
Bias current change 2
Ib2
−
−
0.8
mA
VIN =27∼33V
Fig.5
Peak output current
IO-P
−
1.7
−
A
Tj =25˚C
Fig.1
Output short-circuit current
IOS
−
0.3
−
A
VIN=30V
Fig.6
Temperature coefficient of output voltage
mV/˚C IO=5mA, Tj =0∼125˚C
Fig.1
BA178!!T / FP series
Regulator ICs
"Measurement circuits
V
~
eIN
10Ω5W
INPUT
IO
COMMON
VIN
V
OUTPUT
0.1µF
100µF
0.33µF
0.1µF
0.33µF
VIN
INPUT
OUTPUT
eOUT
V
~
COMMON
IO
eIN=1Vrms
f=120Hz
Ripple rejection ratio R.R. = 20 log
Fig. 1 Measurement circuit for output voltage,
input stability,load regulation,
temperature coefficient of output voltage
(
eIN
eOUT
)
Fig. 2 Measurement circuit for ripple rejection rario
V
10µF
INPUT
+
OUTPUT
0.33µF
VIN
10Hz∼
100kHz
IO
COMMON
INPUT
BPF
0.1 µF
Noise
meter
INPUT
VIN
0.1µF
VIN
OUTPUT
INPUT
0.1 µF
OUTPUT
0.1 µF
0.33 µF
VIN
IO
COMMON
∆V=
V 100mA
IO
IA
COMMON
Fig. 4 Measurement circuit for Minimum
I / O voltage differential
Fig. 3 Measurement circuit for output noise voltage
0.33 µF
OUTPUT
0.33µF
IO A
COMMON
A
Fig. 5 Measurement circuit for bias
current and bias current change
Fig. 6 Measurement circuit for
Fig. 1 output short-circuit current
"Electrical characteristic curves
10
25
6
VIN=10V, IOUT=0
BA17805T
8
6
4
2
(1) 22.0
POWER DISSIPATION : Pd (W)
OUTPUT VOLTAGE : VOUT (V)
OUTPUT VOLTAGE : VOUT (V)
VIN=10V
BA17805T
5
4
3
2
1
20
15
(1) Infinite heat sink, θj-c = 5.7 (˚C/W)
(2) 100×100×2 (mm3), with Al heat sink
(3) 50×50×2 (mm3), with Al heat sink
(4) No heat sink θj-a = 62.5 (˚C/W)
Note: With Al heat sink, tightening
torque = 6 kg/cm and silicon
grease as lubricant
(2) 11.0
10
(3) 6.5
5
(4) 2.0
0
1.0
1.2
1.4
1.6
1.8
OUTPUT CURRENT : IOUT (A)
Fig. 7 Current limit characteristics
2.0
0
25
50
75
100
125
150
175
200
0
25
50
75
100
125
150
JUNCTION TEMPERATURE : Tj (˚C)
AMBIENT TEMPERATURE : Ta (˚C)
Fig. 8 Thermal cutoff circuit
Fig. 2 characteristics
Fig.9 Ta - power dissipation
characteristics (TO220)
BA178!!T / FP series
Regulator ICs
POWER DISSIPATION : Pd (W)
12.5
10
(1) 10.0
(1) Infinite heat sink, θj-c = 12.5 (˚C/W)
(2) No heat sink θj-c = 125.0 (˚C/W)
7.5
5
2.5
(2) 1.0
0
0
25
50
75
100
125
150
AMBIENT TEMPERATURE : Ta (˚C)
Fig.10 Ta - power dissipation
Fig.3 characteristics (TO252-3)
"Operation notes
(1) Although the circuit examples included in this handbook are highly recommendable for general use, you should be
thoroughly familiar with circuit characteristics as they relate to your own use conditions. If you intend to change the
number of external circuits, leave an ample margin, taking into account discrepancies in both static and dynamic
characteristics of external parts and Rohm ICs. In addition, please be advised that Rohm cannot provide complete
assurance regarding patent rights.
(2) Operating power supply voltage
When operating within the normal voltage range and within the ambient operating temperature range, most circuit
functions are guaranteed. The rated values can not be guaranteed for the electrical characteristics, but there are no
sudden changes of the characteristics within these ranges.
(3) Power dissipation
Heat attenuation characteristics are noted on a separate page and can be used as a guide in judging power
dissipation.
If these ICs are used in such in a way that the allowable power dissipation level is exceeded, an increase in the chip
temperature could cause a reduction in the current capability or could otherwise adversely affect the performance of
the IC. Make sure a sufficient margin is allowed so that the allowable power dissipation value is not exceeded.
(4) Preventing oscillation in output and using bypass capacitors
Always use a capacitor between the output pins and the GND to prevent fluctuation in the output and to prevent
oscillation between the output pins and the GND of the application’s input (VIN 0.1µF should be used.)
Changes in the temperature and other factors can cause the value of the capacitor to change, and this can cause
oscillation. To prevent this, we recommend using a tantalum capacitor which has minimal changes in nominal
capacitance.
Also, we recommend adding a bypass capacitor of about 0.33µF between the input pin and the GND, as close to the
pin as possible.
(5) Thermal overload circuit
A built-in thermal overload circuit prevents damage from overheating. When the thermal circuit is activated, the various
outputs are in the OFF state. When the temperature drops back to a constant level, the circuit is restored.
(6) Internal circuits could be damaged if there are modes in which the electric potential of the application’s input (VIN) and
GND are the opposite of the electric potential of the various outputs. Use of a diode or other such bypass path is
recommended.
(7) Although the manufacture of this product includes rigorous quality assurance procedures, it may be be damaged if
absolute maximum ratings for voltage or operating temperature are exceeded. When damage has occurred, special
modes (such as short circuit mode or open circuit mode) cannot be specified. If it is possible that such special modes
may be needed, please consider using a fuse or some other mechanical safety measure.
(8) When used within a strong magnetic field, be aware that there is a slight possibility of malfunction.
BA178!!T / FP series
Regulator ICs
"External dimensions (Units : mm)
BA178OOFP series
BA178OOT series
4.5
7.0 +0.3
−0.1
+0.3
−0.1
2.8 +0.2
−0.1
φ3.1±0.1
9.5±0.5
0.65
2.3±0.2
0.8
0.55 +0.1
−0.05
1.5
2.5
0.65
2.3±0.2
(1)
2.54±0.5
0.5±0.1
0.8
1.3
2.54±0.5
2.3±0.2
5.5±0.2
7.0±0.3
6.5±0.2
+0.2
5.0 −0.1
(2)
5.0±0.2 8.0±0.2
17.0 +0.4
−0.2
13.5Min.
12.0±0.2
1.8±0.2
10.0
+0.3
−0.1
(1) INPUT
(2) COMMON
(3) OUTPUT
2.6±0.5
(1) (2) (3)
(1) (2) (3)
TO220FP
0.5±0.1
(3)
(1) INPUT
(2) COMMON
(3) OUTPUT
TO252-3
Similar pages