BA78M24FPE2 [ROHM]
1A Output 78 series Regulators 500mA Output 78 series Regulators; 1A输出78系列稳压器500mA输出78系列稳压器型号: | BA78M24FPE2 |
厂家: | ROHM |
描述: | 1A Output 78 series Regulators 500mA Output 78 series Regulators |
文件: | 总13页 (文件大小:373K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
78 Series Regulators
1A Output 78 series Regulators
500mA Output 78 series Regulators
BA78□□Series,BA78M□□Series
No.12019ECT01
●Description
BA78□□, BA78M□□ series are three-terminal regulators available with several fixed output voltages. It supplies the
stable fixes voltage from unstable direct input voltage. The useful output voltage lineup is 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V,
18V, 20V, 24V with 0.5A / 1A current ability. They have nearly same electric characteristics as competitor products and cover
a wide range of application.
●Features
1) Built-in over-current protection circuit and thermal shutdown circuit
2) High ripple rejection
3) Available TO220CP-3, TO252-3 package to a wide range application
4) Compatible replacement to competitor products
5) Various voltage lineup (5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, 24V)
●Applications
Fixed voltage power supply for TV, Audio components, etc
●Line up
■1A BA78□□Series
Part Number
BA78□□CP
BA78□□FP
5V
○
○
6V
○
○
7V
○
○
8V
○
○
9V
○
○
10V 12V 15V 18V 20V 24V Package
○
○
○
○
○
○
○
○
○
○
○
○
TO220CP-3
TO252-3
■0.5A BA78M□□Series
Part Number
5V
○
○
6V
○
○
7V
○
○
8V
○
○
9V
○
○
10V 12V 15V 18V 20V 24V Package
BA78M□□CP
BA78M□□FP
○
○
○
○
○
○
○
○
○
○
○
○
TO220CP-3
TO252-3
●Output Voltage and Marking
Part Number:BA78□□□□ (1A)
Part Number:BA78M□□□□ (0.5A)
a
b
a
b
Symbol
assignment of output voltage
□□ Output voltage(V) □□ Output voltage(V)
Symbol
assignment of output voltage
□□ Output voltage(V) □□ Output voltage(V)
05
06
07
08
09
10
5.0V typ.
6.0V typ.
7.0V typ.
8.0V typ.
9.0V typ.
10.0V typ.
12
15
18
20
24
12V typ.
15V typ.
18V typ.
20V typ.
24V typ.
05
06
07
08
09
10
5.0V typ.
6.0V typ.
7.0V typ.
8.0V typ.
9.0V typ.
10.0V typ.
12
15
18
20
24
12V typ.
15V typ.
18V typ.
20V typ.
24V typ.
a
a
Package
Package
CP:TO220CP-3
FP:TO252-3
CP:TO220CP-3
FP:TO252-3
b
b
www.rohm.com
2012.03 - Rev.C
1/12
© 2012 ROHM Co., Ltd. All rights reserved.
Technical Note
BA78□□Series,BA78M□□Series
●Absolute Maximum Rating (Ta=25℃)
BA78□□CP/FP, BA78M□□CP/FP
Parameter
Symbol
Vin
Limits
35
Unit
V
Power supply voltage
TO220CP-3
Power Dissipation 1
TO252-3
TO220CP-3
Power Dissipation 2
TO252-3
2 *1
Pd1
Pd2
Io
W
W
A
1 *1
22 *2
10 *2
BA78□□
BA78□□M
1 *3
Output Current
0.5 *3
Operating Temperature Range
Storage Temperature Range
Operating Junction Temperature Range
Topr
Tstg
Tj
-40~+85
-55~+150
-40~+150
℃
℃
℃
*1 Derating in done 16mW/℃(TO220CP-3), 8mW/℃(TO252-3) for temperatures above Ta=25℃
*2 Derating in done 176mW/℃(TO220CP-3), 80mW/℃(TO252-3) for temperatures above Ta=25℃, Mounted on infinity Alminium heat sink.
*3 Pd,ASO and Tjmax(150℃) should not be exceeded.
●Operating Conditions(Ta=25℃, Pd should not be exceeded)
BA78□□CP/FP
BA78M□□CP/FP
Parameter
Symbol
Min.
7.5
8.5
9.5
10.5
11.5
12.5
14.5
17.5
21
Max.
25
21
22
23
26
25
27
30
33
33
33
1
Unit.
Parameter
Symbol
Min.
7.5
8.5
9.5
10.5
11.5
12.5
14.5
17.5
21
Max.
25
21
22
23
26
25
27
30
33
33
33
0.5
Unit.
BA7805
BA78M05
BA7806
BA7807
BA7808
BA7809
BA7810
BA7812
BA7815
BA7818
BA7820
BA7824
BA78M06
BA78M07
BA78M08
BA78M09
BA78M10
BA78M12
BA78M15
BA78M18
BA78M20
BA78M24
Input
Voltage
Input
Vin
V
Vin
V
Voltage
23
27
-
23
27
-
Output Current
Io
A
Output Current
Io
A
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.C
2/12
Technical Note
BA78□□Series,BA78M□□Series
●Electrical Characteristics BA78M□□CP/FP
(Ta=25℃,Vin=10V(05),11V(06),13V(07),14V(08),15V(09),16V(10),19V(12),23V(15),27V(18),29V(20),33V(24), Io=350mA unless otherwise specified)
Limit
Parameter
Symbol
Type
Unit
Condition
Min
4.8
5.75
6.7
7.7
8.6
9.6
11.5
14.4
17.3
19.2
23.0
4.75
5.7
6.65
7.6
8.55
9.5
11.4
14.25
17.1
19.0
22.8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
62
60
57
56
56
56
55
54
53
53
50
-
Typ
5.0
6.0
7.0
8.0
9.0
10.0
12.0
15.0
18.0
20.0
24.0
-
-
-
-
-
-
-
-
-
-
-
3
3
4
4
4
5
5
6
7
8
10
1
1
1
1
2
2
3
3
3
4
5
78
74
71
69
67
66
63
60
58
58
55
-1.0
-0.5
-0.6
-0.7
875
2.0
Max
5.2
6.25
7.3
8.3
9.4
10.4
12.5
15.6
18.7
20.8
25.0
5.25
6.3
7.35
8.4
9.45
10.5
12.6
15.75
18.9
21.0
25.2
100
100
100
100
100
100
100
100
100
100
100
50
50
50
50
50
50
50
50
50
50
50
-
-
-
-
-
-
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
Output Voltage 1
Vo1
V
Io=350mA
Vin=7.5~20V, Io=5mA~350mA
Vin=8.5~21V, Io=5mA~350mA
Vin=9.5~22V, Io=5mA~350mA
Vin=10.5~23V, Io=5mA~350mA
Vin=11.5~24V, Io=5mA~350mA
Vin=12.5~25V, Io=5mA~350mA
Vin=15~27V, Io=5mA~350mA
Vin=17.5~30V, Io=5mA~350mA
Vin=21~33V, Io=5mA~350mA
Vin=23~33V, Io=5mA~350mA
Vin=27~33V, Io=5mA~350mA
Vin=7~25V, Io=200mA
Output Voltage 2
Line Regulation 1
Line Regulation 2
Ripple Rejection
Vo2
V
Vin=8~25V, Io=200mA
Vin=9~25V, Io=200mA
Vin=10.5~25V, Io=200mA
Vin=11.5~26V, Io=200mA
Vin=12.5~28V, Io=200mA
Vin=14.5~30V, Io=200mA
Vin=17.5~30V, Io=200mA
Vin=21~33V, Io=200mA
Vin=23~33V, Io=200mA
Vin=27~33V, Io=200mA
Vin=8~12V, Io=200mA
Vin=9~25V, Io=200mA
Vin=10~25V, Io=200mA
Vin=11~25V, Io=200mA
Vin=12~25V, Io=200mA
Vin=14~26V, Io=200mA
Vin=16~30V, Io=200mA
Vin=20~30V, Io=200mA
Vin=24~33V, Io=200mA
Vin=24~33V, Io=200mA
Reg.I1
mV
mV
dB
Reg.I2
Vin=28~33V, Io=200mA
R.R.
Tcvo
ein=1Vrms, f=120Hz, Io=100mA
-
-
-
-
-
-
-
-
05
Temperature
Coefficient of
Output Voltage
06/07/08/09/10/12
15/18
-
-
-
-
mV/℃ Io=5mA, Tj=0~125℃
20/24
common
common
-
-
-
Peak Output Current
Dropout Voltage
Io-p
Vd
mA
V
Tj=25℃
Io=500mA
-
www.rohm.com
2012.03 - Rev.C
3/12
© 2012 ROHM Co., Ltd. All rights reserved.
Technical Note
BA78□□Series,BA78M□□Series
●Electrical Characteristics BA78M□□CP/FP
(Ta=25℃,Vin=10V(05),11V(06),13V(07),14V(08),15V(09),16V(10),19V(12),23V(15),27V(18),29V(20),33V(24),Io=350mA unless otherwise specified)
Limit
Parameter
Symbol
Type
Unit
Condition
Min
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
20
20
20
20
20
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10
10
10
40
60
70
80
90
100
110
130
140
150
170
4.5
-
Max
100
120
140
160
180
200
240
300
360
400
480
50
60
70
80
90
100
120
150
180
200
240
-
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
Load Regulation 1
Reg.L1
mV
Io=5mA~500mA
Load Regulation 2
Reg.L2
mV
Io=5mA~200mA
-
-
-
-
-
-
-
-
Output Noise
Voltage
Vn
µV
f=10Hz~100kHz
-
-
24
Bias Current
Bias Current Change1
Ib
Ib1
common
common
6.0
0.5
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
-
-
-
-
-
-
-
-
-
mA
mA
Io=0mA
Io=5mA~350mA
05
06
07
08
09
10
12
15
-
-
-
-
-
-
-
-
Vin:8~25V, Io=200mA
Vin:9~25V, Io=200mA
Vin:10~25V, Io=200mA
Vin:10.5~25V, Io=200mA
Vin:12~25V, Io=200mA
Vin:13~25V, Io=200mA
Vin:14.5~30V, Io=200mA
Vin:17.5~30V, Io=200mA
Vin:21~33V, Io=200mA
Vin:23~33V, Io=200mA
Vin:27~33V, Io=200mA
Vin=25V
Bias Current Change 2
Ib2
Ios
Ro
mA
18
20
24
-
-
-
05/06/07/08
09/10/12/15/18/20/24
0.4
0.17
9
Short-Circuit
Output Current
A
Vin=30V
05
06
07
08
09
10
12
15
18
20
24
10
11
12
13
14
16
19
22
25
37
Output Resistance
mΩ
f=1kHz
-
-
-
-
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.C
4/12
Technical Note
BA78□□Series,BA78M□□Series
●Electrical Characteristics BA78□□CP/FP
(Ta=25℃,Vin=10V(05),11V(06),13V(07),14V(08),15V(09),16V(10),19V(12),23V(15),27V(18),29V(20),33V(24),Io=500mA unless otherwise specified)
Limit
Parameter
Symbol
Type
Unit
Condition
Min
4.8
5.75
6.7
7.7
8.6
9.6
11.5
14.4
17.3
19.2
23.0
4.75
5.7
6.65
7.6
8.55
9.5
11.4
14.25
17.1
19.0
22.8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
62
59
57
56
56
55
55
54
53
53
50
-
Typ
5.0
6.0
7.0
8.0
9.0
10.0
12.0
15.0
18.0
20.0
24.0
-
-
-
-
-
-
-
-
-
-
-
3
4
5
5
6
7
8
9
10
12
15
1
2
2
3
4
Max
5.2
6.25
7.3
8.3
9.4
10.4
12.5
15.6
18.7
20.8
25.0
5.25
6.3
7.35
8.4
9.45
10.5
12.6
15.75
18.9
21.0
25.2
100
120
140
160
180
200
240
300
360
400
480
50
60
70
80
90
100
120
150
180
200
240
-
-
-
-
-
-
-
-
-
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
Output Voltage 1
Vo1
V
Io=500mA
Vin=7.5~20V, Io=5mA~1A
Vin=8.5~21V, Io=5mA~1A
Vin=9.5~22V, Io=5mA~1A
Vin=10.5~23V, Io=5mA~1A
Vin=11.5~26V, Io=5mA~1A
Vin=12.5~25V, Io=5mA~1A
Vin=15~27V, Io=5mA~1A
Vin=17.5~30V, Io=5mA~1A
Vin=21~33V, Io=5mA~1A
Vin=23~33V, Io=5mA~1A
Vin=27~33V, Io=5mA~1A
Vin=7~25V, Io=500mA
Output Voltage 2
Line Regulation 1
Line Regulation 2
Ripple Rejection
Vo2
V
Vin=8~25V, Io=500mA
Vin=9~25V, Io=500mA
Vin=10.5~25V, Io=500mA
Vin=11.5~26V, Io=500mA
Vin=12.5~27V, Io=500mA
Vin=14.5~30V, Io=500mA
Vin=17.5~30V, Io=500mA
Vin=21~33V, Io=500mA
Vin=23~33V, Io=500mA
Vin=27~33V, Io=500mA
Vin=8~12V, Io=500mA
Reg.I1
mV
mV
dB
Vin=9~13V, Io=500mA
Vin=10~15V, Io=500mA
Vin=11~17V, Io=500mA
Vin=13~19V, Io=500mA
Vin=14~20V, Io=500mA
Vin=16~22V, Io=500mA
Vin=20~26V, Io=500mA
Vin=24~30V, Io=500mA
Vin=26~32V, Io=500mA
Vin=30~33V, Io=500mA
Reg.I2
4
5
5
5
7
10
78
73
69
65
64
64
63
62
61
60
58
-1.0
-0.5
-0.6
-0.7
1.7
2.0
ein=1Vrms, f=120Hz,
Io=100mA
R.R.
Tcvo
-
-
-
-
-
-
-
-
05
Temperature
Coefficient of
Output Voltage
06/07/08/09/10/12
15/18
-
-
-
-
mV/℃ Io=5mA, Tj=0~125℃
20/24
common
common
Peak Output Current
Dropout Voltage
Io-p
Vd
A
V
Tj=25℃
Io=1A
-
www.rohm.com
2012.03 - Rev.C
5/12
© 2012 ROHM Co., Ltd. All rights reserved.
Technical Note
BA78□□Series,BA78M□□Series
●Electrical Characteristics BA78□□CP/FP
(Ta=25℃,Vin=10V(05),11V(06),13V(07),14V(08),15V(09),16V(10),19V(12),23V(15),27V(18),29V(20),33V(24),Io=500mA unless otherwise specified)
Limit
Parameter
Symbol
Type
Unit
Condition
Min
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
15
16
17
19
20
21
23
27
30
32
37
5
Max
100
120
140
160
180
200
200
300
360
400
480
50
60
70
80
90
90
100
150
180
200
240
-
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
24
05
06
07
08
09
10
12
15
18
20
Load Regulation 1
Reg.L1
mV
Io=5mA~1A
6
6
7
8
Load Regulation 2
Reg.L2
8
mV
Io=250mA~750mA
10
10
12
14
15
40
60
70
80
90
100
110
125
140
150
180
4.5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Output Noise
Voltage
Vn
µV
f=10Hz~100kHz
-
-
24
Bias Current
Bias Current Change 1
Ib
Ib1
common
common
8.0
0.5
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
-
-
-
-
-
-
-
-
-
mA
mA
Io=0mA
Io=5mA~1A
05
06
07
08
09
10
12
15
Vin:8~25V, Io=500mA
Vin:8.5~25V, Io=500mA
Vin:9.5~25V, Io=500mA
Vin:10.5~25V, Io=500mA
Vin:11.5~26V, Io=500mA
Vin:12.5~27V, Io=500mA
Vin:14.5~30V, Io=500mA
Vin:17.5~30V, Io=500mA
Vin:21~33V, Io=500mA
Vin:23~33V, Io=500mA
Vin:27~33V, Io=500mA
Vin=25V
Bias Current Change 2
Ib2
Ios
Ro
mA
18
20
24
-
-
-
05/06/07/08
09/10/12/15/18/20/24
0.6
0.3
9
Short-Circuit
Output Current
A
Vin=30V
05
06
07
08
09
10
12
15
18
20
24
10
10
10
10
11
12
14
17
19
27
-
-
-
-
-
-
-
Output Resistance
mΩ
f=1kHz
-
-
-
-
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.C
6/12
Technical Note
BA78□□Series,BA78M□□Series
●BA78M□□ Characteristics data(Ta=25℃, Vin=10V(05), 14V(08), 23V(15) unless otherwise specified)
20
15
10
5
20
15
10
5
20
15
10
5
Ta=25℃
Io=350mA
BA78M15
Ta=25℃
Io=500mA
Ta=25℃
Io=0mA
BA78M15
BA78M15
BA78M08
BA78M05
BA78M08
BA78M05
BA78M08
BA78M05
0
0
0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
0
5
10
15
20
25
30
Vin [V]
Vin [V]
Vin [V]
Fig.2 Line Regulation (Io=350mA)
Fig.1 Line Regulation (Io=0mA)
Fig.3 Line Regulation(Io=500mA)
2.0
20
15
10
5
6
5
4
3
2
1
0
Ta=25℃
Ta=25
Io=0mA
Ta=25℃
BA78M05
BA78M15
1.5
1.0
0.5
0.0
BA78M15
BA78M08
BA78M05
BA78M08
BA78M08
BA78M05
BA78M15
0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
Vin [V]
Vin [V]
Io [A]
Fig.4 ViInN - Ibo
Fig.5 Load Regulation
Fig.6 Peak Output Current
100
80
1.0
0.8
0.6
0.4
0.2
0.0
2.0
Ta=25℃
Ta=25℃
BA78M05
BA78M05
BA78M08
BA78M15
1.5
1.0
0.5
0.0
BA78M05
BA78M08
BA78M15
60
BA78M15
BA78M08
40
20 Ta=25℃
Io=100mA
0
10
100
1K
10K
100K
1M
0
0.1
0.2
0.3
0.4
0.5
0
5
10
15
20
25
30
Frequency[Hz]
Io [A]
Vin [V]
Fig.9 Ripple Rejection Ratio
Fig.8 Short – Circuit Output Current
Fig.7 Dropout Voltage
1.5
1.0
6
6
Ta=25℃
Io=5mA
Io=0mA
BA78M15
BA78M15
5
4
3
2
1
0
5
BA78M05
0.5
4
BA78M08
BA78M05
BA78M08
0.0
3
2
1
0
BA78M05
BA78M15
BA78M08
-0.5
-1.0
-1.5
-40
-20
0
20
40
60
80
100
0
0.1
0.2
0.3
0.4
0.5
-40
-20
0
20
Ta [
40
]
℃
60
80
100
Io [A]
Ta[℃]
Fig.12 Io - Ib
Fig.10 Ta - Vo
Fig.11 Ta - Ib
7/12
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.C
Technical Note
BA78□□Series,BA78M□□Series
●BA78□□ Characteristics data (Ta=25℃, Vin=10V(05), 14V(08), 23V(15) unless otherwise specified)
20
15
10
5
20
15
10
5
20
15
10
5
Ta=25℃
Io=500mA
Ta=25℃
Io=1A
Ta=25℃
Io=0mA
BA7815
BA7815
BA7815
BA7808
BA7805
BA7808
BA7805
BA7808
BA7805
0
0
0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
0
5
10
15
Vin [V]
20
25
30
Vin [V]
Vin [V]
Fig.14 Line Regulation (Io=500mA)
Fig15. Line Regulation (Io=1A)
Fig.13 Line Regulation (Io=0mA)
6
5
4
3
2
1
0
20
2.0
Ta=25℃
Io=0mA
Ta=25℃
Ta=25℃
BA7815
BA7805
15
10
5
1.5
1.0
0.5
0.0
BA7805
BA7808
BA7808
BA7815
BA7808
BA7805
BA7815
0
0
5
10
15
Vin [V]
20
25
30
0.0
0.5
1.0
1.5
2.0
0
5
10
15
20
25
30
Io [A]
Vin [V]
Fig.17 Load Regulation
Fig.16 Vin - Ib
Fig.18 Peak Output Current
2.0
1.5
1.0
0.5
0.0
2
1.5
1
100
80
60
40
20
Ta=25℃
Ta=25℃
BA7805
BA7805
BA7808
BA7815
BA7805
BA7808
BA7815
BA7808
BA7815
0.5
0
Ta=25℃
Io=100mA
0
10
100
1K
Frequency [Hz]
10K
100K
1M
0
0.2
0.4
0.6
0.8
1
0
5
10
15
Vin [V]
20
25
30
Io [A]
Fig.19 Dropout Voltage
Fig.21 Ripple Rejection Ratio
Fig.20 Short – Circuit Output Current
6
6
1.5
1.0
Io=0mA
BA7815
Io=5mA
Ta=25℃
BA7815
5
4
3
2
1
0
5
4
0.5
BA7808
BA7808
BA7805
BA7815
BA7805
3
0.0
BA7805
-0.5
-1.0
-1.5
2
BA7808
1
0
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
0
0.2
0.4
0.6
0.8
1
Ta [℃]
Ta [℃]
Io [A]
Fig.24 Io - Ib
Fig.22 Ta - Vo
Fig.23 Ta - Ib
8/12
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.C
Technical Note
BA78□□Series,BA78M□□Series
●Internal Circuit Structural Diagram
INPUT
R9
R13
D2
R8
Q8
R4
R10
Q9
Q16
Q12
Q17
R21
R17
R12
R11
Q15
R5
Q10
OUTPUT
Q6
R2
Q13
Q5
R20
R19
R15
C1
R6
R16
Q11
R1
D1
Q7
Q18
Q4
Q1
Q14
Q3
Q2
R14
D3
R7
R22
R3
R18
COMMON
FIN
1
2 3
TO220CP-3
Symbol
TO252-3
Symbol
PIN No.
Function
PIN No.
Function
1
2
3
INPUT
COMMON
OUTPUT
Input terminal
Ground terminal
Output terminal
1
2
3
INPUT
N.C.
OUTPUT
COMMON
Input terminal
Non connection terminal
Output terminal
FIN
Ground terminal
●Protection Circuit
Vin=10V
BA7805CP
6
5
4
(1)Over-current protection circuit
When the maximum rating current or more is rushed, it controls the
current ability and protects the IC from destruction.
3
2
1
0
1
2
Output Current : IO[A]
(2) Thermal shutdown circuit
6
5
When the chip temperature of IC exceeds the setting temperature, the IC goes
OFF, and it controls the IC not to be destroyed by the heat generation.
It can be restored by being lowered the chip temperature of IC below the
setting temperature.
4
3
2
Vin=10V
BA7805CP
1
0
200
75 100 125 150 175
25
50
Chip Junction temperature : Tj [℃]
(3) Safety operation area control circuit
It controls the output current in inverse proportion ratio to voltage difference
(input-output).
2
Tj=25℃
BA7805CP
When voltage difference becomes bigger, the IC will be destroyed in rush current.
It protects the IC by controlling the current ability according to the voltage level.
1.5
1
0.5
0
10
20
30
40
Input-Output voltage difference: Vin-Vo [V]
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2012.03 - Rev.C
9/12
Technical Note
BA78□□Series,BA78M□□Series
●Thermal design
Refer to the following thermal derating curves (Fig. 25, 26), when using in the status of Ta=25℃ or more.
The characteristic of IC is greatly related to the operating temperature.
When it is used in over maximum junction temperature, the elements inside IC might become weaker and be destroyed.
It is recommended to take into consideration thermal of IC.
Note that the temperatures are in the allowed temperature limits and operated within Pd.
It is necessary to operate it at junction temperature Tjmax or less to prevent IC from the thermal destruction.
Please operate IC within permissible loss Pd because the junction temperature Tj might become considerably a high
temperature even if ambient temperature Ta is normal temperature (25℃).
Power consumption Pc(W) may be expressed by the equation shown below:
Pc=(Vin-Vo)×Io+ Vin×Ib
permissible loss Pd≧Pc
Vin : Input Voltage
Vo : Output Voltage
Io : Output Current
Ib : Bias current
Pd Vin Ib
Io ≦
Vin Vo
Maximum Output current IoMAX can be calculated in thermal design.
・Calculation example
Ex.1) Ta=85℃, Vin =7.5V, Vo=5.0V
Using TO220CP-3 alone
θja=62.5℃/W→16mW/℃
Pd=1.04W at 85℃
1.04 7.5 4.5m
7.5 5.0
Io≦
Io≦400mA
Be sure to use this IC within a power dissipation at the range of operating temperature.
25
20
12.5
10
(1) Mounted on infinity Alminium heat sinkθj-c=12.5 (℃/W)
(2) Using an IC aloneθj-a=125.0℃/W
(1) Mounted on infinity Alminium heat sinkθj-c=5.7(℃/W)
(2) Using an IC aloneθj-a=62.5℃/W
(1) 22.0
(1) 10.0
15
10
7.5
5
5
0
2.5
0
(2) 2.0
(2) 1.0
0
25
50
75
100
125
150
0
25
50
75
100
125
150
AMBIENT TEMPERATURE : Ta[℃]
AMBIENT TEMPERATURE : Ta[℃]
Fig.25 Thermal derating curve (TO220CP-3)
Fig.26 Thermal derating curve (TO252-3)
●Terminal Setting and Cautions
・INPUT
It is recommended that a capacitor (about 0.33uF) be inserted between INPUT and COMMON.
The value of capacitor is designed suitable for the actual application.
・OUTPUT
It is recommended that a capacitor (about 0.1uF) be inserted between OUTPUT and COMMON.
A tantalum capacitor can also be used for this pin because insufficient capacitors may cause oscillation by a temperature
change.
・COMMON
Keep the no voltage drop between Ground level of set board and IC.
When there is the voltage difference, setting voltage becomes inaccuracy and unstable.
It is recommended to connect by wide, short pattern, and lower the inpedance.
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.C
10/12
Technical Note
BA78□□Series,BA78M□□Series
●Notes for use
(1) Absolute Maximum Ratings
While utmost care is taken to quality control of this product, any application that may exceed some of the absolute
maximum ratings including the voltage applied and the operating temperature range may result in breakage. If broken,
short-mode or open-mode may not be identified. So if it is expected to encounter with special mode that may exceed the
absolute maximum ratings, it is requested to take necessary safety measures physically including insertion of fuses.
(2) Ground voltage
Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state.
Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric transient.
(3) Thermal design
When you do the kind of use which exceeds Pd, It may be happened to deteriorating IC original quality such as decrease
of electric current ability with chip temperature rise. Do not exceed the power dissipation (Pd) of the package specification
rating under actual operation, and please design enough temperature margins.
(4) Short-circuiting between terminals, and mismounting
When mounting to pc board, care must be taken to avoid mistake in its orientation and alignment. Failure to do so may
result in IC breakdown. Short-circuiting due to foreign matters entered between output terminals, or between output and
power supply or GND may also cause breakdown.
(5) Operation in Strong electromagnetic field
Be noted that using the IC in the strong electromagnetic radiation can cause operation failures.
(6) Inspection with the IC set to a pc board
If a capacitor must be connected to the pin of lower impedance during inspection with the IC set to a pc board, the
capacitor must be discharged after each process to avoid stress to the IC. For electrostatic protection, provide proper
grounding to assembling processes with special care taken in handling and storage. When connecting to jigs in the
inspection process, be sure to turn OFF the power supply before it is connected and removed.
(7) Input to IC terminals
This is a monolithic IC with P+ isolation between P-substrate and each element as illustrated below. This P-layer and the
N-layer of each element form a P-N junction, and various parasitic element are formed.
If a resistor is joined to a transistor terminal as shown in Fig 28.
○P-N junction works as a parasitic diode if the following relationship is satisfied;
GND>Terminal A (at resistor side), or GND>Terminal B (at transistor side); and
○if GND>Terminal B (at NPN transistor side),
a parasitic NPN transistor is activated by N-layer of other element adjacent to the above-mentioned parasitic diode.
The structure of the IC inevitably forms parasitic elements, the activation of which may cause interference among circuits,
and/or malfunctions contributing to breakdown. It is therefore requested to take care not to use the device in such
manner that the voltage lower than GND (at P-substrate) may be applied to the input terminal, which may result in
activation of parasitic elements.
(8) Ground wiring pattern
If small-signal GND and large-current GND are provided, It will be recommended to separate the large-current GND
pattern from the small-signal GND pattern and establish a single ground at the reference point of the set PCB so that
resistance to the wiring pattern and voltage fluctuations due to a large current will cause no fluctuations in voltages of the
small-signal GND. Pay attention not to cause fluctuations in the GND wiring pattern of external parts as well.
(9) Thermal shutdown circuit
A temperature control circuit is built in the IC to prevent the damage due to overheat.Therefore, the output is turned off
when the thermal circuit works and is turned on when the temperature goes down to the specified level.
But, built-in the IC a temperature control circuit to protect itself, and avoid the design used the thermal protection.
(10) Over current protection circuit
The over-current protection circuits are built in at output, according to their respective current outputs and prevent the IC
from being damaged when the load is short-circuited or over-current. But, these protection circuits are effective for
preventing destruction by unexpected accident. When it’s in continuous protection circuit moving period don’t use please.
And for ability, because this chip has minus characteristic, be careful for heat plan.
(11) There is a possibility to damage an internal circuit or the element when Vin and the voltage of each terminal reverse in the
application. For instance, Vin is short-circuited to GND etc. with the charge charged to an external capacitor. Please use
the capacitor of the output terminal with 1000μF or less. Moreover, the Vin series is recommended to insert the diode of
the by-pass the diode of the backflow prevention or between each terminal and Vin.
Pin B
Bypass diode
Resistor
Transistor (NPN)
B
C
E
Backflow prevention diode
Pin A
B
C
Pin B
E
Parasitic
element
VCC
GND
N
N
N
P+
Output terminal
P+
P+
P
P+
P
Other adjacent elements
Pin A
N
N
N
P substrate
P substrate
GND
GND
GND
Parasitic element
Parasitic element
Parasitic
element
Fig.27 Bypass Diode
Fig.28 Simplified structure of monorisic IC
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2012.03 - Rev.C
11/12
Technical Note
BA78□□Series,BA78M□□Series
●Ordering part number
B A
7 8
M
0 5
F P
-
E 2
Part No
Part No
Output
Current
None:1A
Output
Voltage
05 : 5V
Package
CP :TO220CP-3
FP :TO252-3
Packaging and forming specification
E2: Embossed tape and reel
(TO220CP-3, TO252-3)
M
:0.5A
24 : 24V
TO220CP-3
<Tape and Reel information>
+0.3
10.0
4.5 0.1
-
0.1
φ3.2 0.1
+0.2
2.8
Tape
Embossed carrier tape
-
0.1
Quantity
500pcs
E2
Direction
of feed
The direction is the 1pin of product is at the lower left when you hold
(
)
reel on the left hand and you pull out the tape on the right hand
1
2
3
0.42 0.1
2.85
(0.585)
0.82 0.1
1.3
2.46
2.54
1
2
3
Direction of feed
Order quantity needs to be multiple of the minimum quantity.
1pin
Reel
(Unit : mm)
∗
TO252-3
<Tape and Reel information>
Tape
Embossed carrier tape
2000pcs
6.5 0.2
C0.5
Quantity
+0.2
5.1
-
0.1
2.3 0.2
E2
0.5 0.1
Direction
of feed
The direction is the 1pin of product is at the lower left when you hold
reel on the left hand and you pull out the tape on the right hand
FIN
(
)
1
2
3
0.65
0.75
0.65
0.5 0.1
1.0 0.2
2.3 0.2
2.3 0.2
Direction of feed
Order quantity needs to be multiple of the minimum quantity.
1pin
Reel
(Unit : mm)
∗
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2012.03 - Rev.C
12/12
Notice
N o t e s
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, commu-
nication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-
controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
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R1120
A
相关型号:
BA78_SERIES-E
three-terminal regulators available with several fixed output voltages. It supplies the
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