KIA7807AF [KEC]
BIPOLAR LINEAR INTEGRATED CIRCUIT;
| 型号： | KIA7807AF |
| 厂家： | 
KEC(KOREA ELECTRONICS) |
| 描述： | BIPOLAR LINEAR INTEGRATED CIRCUIT 输出元件 调节器 |
| 文件： | 总20页 (文件大小：1152K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SEMICONDUCTOR KIA7805AF/API~KIA7824AF/API
TECHNICAL DATA
BIPOLAR LINEAR INTEGRATED CIRCUIT
THREE TERMINAL POSITIVE VOLTAGE REGULATORS
5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, 24V.
FEATURES
· Internal Thermal Overload Protection.
· Internal Short Circuit Current Limiting.
· Output Current in Excess of 1A.
· Satisfies IEC-65 Specification. (International Electronical Commission).
· Package is DPAK, TO-220IS
· Suitable for MLCC, Tantalum and Low ESR Electrolytic Capacitors.
· Suffix U : Qualified to AEC-Q100(Grade 0)
: Automotive and standard product are electrically and thermally the same,
except where specified. ex) KIA78**AF-RTF/PU.
LINE-UP
ITEM
OUTPUT VOLTAGE (Typ.)
UNIT
KIA7805AF/API
KIA7806AF/API
KIA7807AF/API
KIA7808AF/API
KIA7809AF/API
KIA7810AF/API
KIA7812AF/API
KIA7815AF/API
KIA7818AF/API
KIA7820AF/API
KIA7824AF/API
5
6
7
8
9
AF : DPAK
10
12
15
18
20
24
API : TO-220IS
MAXIMUM RATINGS (Ta=25℃)
CHARACTERISTIC
SYMBOL
VIN
RATING
35
UNIT
KIA7805∼
KIA7815
Input Voltage
V
KIA7818∼
40
KIA7824
AF
API
AF
1.3
2.0
Power Dissipation-1
(No Heatsink)
PD1
W
W
12.0
Power Dissipation-2
(Infinite Heatsink)
PD2
API
20.8
Tj
Operating Junction Temperature
Storage Temperature
-40∼ 150
-55∼ 150
℃
℃
Tstg
2015. 5. 13
Revision No : 8
1/20
KIA7805AF/API~KIA7824AF/API
EQUIVALENT CIRCUIT
2015. 5. 13
Revision No : 8
2/20
KIA7805AF/API~KIA7824AF/API
KIA7805AF/API
ELECTRICAL CHARACTERISTICS (VIN=10V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
5.0
3
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
4.8
5.2
100
50
100
50
5.25
8.0
1.3
-
V
7.0V≦VIN≦25V
8.0V≦VIN≦12V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
1
-
15
5
Tj=25℃
mV
250mA
7.0V≦VIN≦20V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
4.75
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.2
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
7.0V≦VIN≦25V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
50
78
2.0
1.6
-0.6
f=120Hz, 8.0V≦VIN≦18V,
IOUT=50mA, Tj=25℃
62
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
3/20
KIA7805AF/API~KIA7824AF/API
KIA7806AF/API
ELECTRICAL CHARACTERISTICS (VIN=11V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
6.0
4
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
5.75
6.25
120
60
120
60
6.3
8.0
1.3
-
V
8.0V≦VIN≦25V
9V≦VIN≦13V
-
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
2
5mA≦IOUT≦1.4A
-
15
5
Tj=25℃
mV
250mA
8V≦VIN≦21V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
5.7
-
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
4.3
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
8V≦VIN≦25V
-
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
55
77
2.0
1.5
-0.7
f=120Hz, 9V≦VIN≦19V,
IOUT=50mA, Tj=25℃
61
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
4/20
KIA7805AF/API~KIA7824AF/API
KIA7807AF/API
ELECTRICAL CHARACTERISTICS (VIN=12V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
7.0
5
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
6.72
7.28
140
70
140
70
7.35
8.0
1.3
-
V
9V≦VIN≦25V
10V≦VIN≦14V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
2
-
15
5
Tj=25℃
mV
250mA
9V≦VIN≦22V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
6.65
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.3
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
9V≦VIN≦25V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
60
75
2.0
1.3
-0.8
f=120Hz, 10V≦VIN≦20V,
IOUT=50mA, Tj=25℃
59
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
5/20
KIA7805AF/API~KIA7824AF/API
KIA7808AF/API
ELECTRICAL CHARACTERISTICS (VIN=14V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
8.0
6
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
7.7
8.3
160
80
160
80
8.4
8.0
1.0
-
V
10.5V≦VIN≦25V
11V≦VIN≦17V
5mA≦IOUT≦1.4A
-
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
2
-
12
4
Tj=25℃
mV
250mA
10.5V≦VIN≦23V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
7.6
-
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
4.3
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
10.5V≦VIN≦25V
-
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
70
74
2.0
1.1
-1.0
f=120Hz, 11.5V≦VIN≦21.5V,
IOUT=50mA, Tj=25℃
58
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
6/20
KIA7805AF/API~KIA7824AF/API
KIA7809AF/API
ELECTRICAL CHARACTERISTICS (VIN=15V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
9.0
7.0
2.5
12
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
8.64
9.36
180
90
180
90
9.45
8.0
1.0
-
V
11.5V≦VIN≦26V
13V≦VIN≦19V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
-
Tj=25℃
mV
250mA
11.5V≦VIN≦26V
≦
IOUT
≦
750mA
-
4.0
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
8.55
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.3
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
11.5V≦VIN≦26V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
75
f=120Hz, 12.5V≦VIN≦22.5V,
IOUT=50mA, Tj=25℃
56
-
72
-
VD
I
OUT=1.0A, Tj=25℃
2.0
1.0
-1.1
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
7/20
KIA7805AF/API~KIA7824AF/API
KIA7810AF/API
ELECTRICAL CHARACTERISTICS (VIN=16V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
10.0
8
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
9.6
10.4
200
100
200
100
10.5
8.0
1.0
-
V
12.5V≦VIN≦27V
14V≦VIN≦20V
5mA≦IOUT≦1.4A
-
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
2.5
12
4
-
Tj=25℃
mV
250mA
12.5V≦VIN≦25V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
9.5
-
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
4.3
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
12.5V≦VIN≦27V
-
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
80
72
2.0
0.9
-1.3
f=120Hz, 13.5V≦VIN≦23.5V,
IOUT=50mA, Tj=25℃
55
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
8/20
KIA7805AF/API~KIA7824AF/API
KIA7812AF/API
ELECTRICAL CHARACTERISTICS (VIN=19V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
12.0
10
3
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
11.5
12.5
240
120
240
120
12.6
8.0
1.0
-
V
14.5V≦VIN≦30V
16V≦VIN≦22V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
-
12
4
Tj=25℃
mV
250mA
14.5V≦VIN≦27V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
11.4
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.3
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
14.5V≦VIN≦30V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
90
71
2.0
0.7
-1.6
f=120Hz, 15V≦VIN≦25V,
IOUT=50mA, Tj=25℃
55
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
9/20
KIA7805AF/API~KIA7824AF/API
KIA7815AF/API
ELECTRICAL CHARACTERISTICS (VIN=23V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
15.0
11
3
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
14.4
15.6
300
150
300
150
15.75
8.0
1.0
-
V
17.5V≦VIN≦30V
20V≦VIN≦26V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
-
12
4
Tj=25℃
mV
250mA
17.5V≦VIN≦30V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
14.25
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.4
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
17.5V≦VIN≦30V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
110
70
2.0
0.5
-2.0
f=120Hz, 18.5V≦VIN≦28.5V,
IOUT=50mA, Tj=25℃
54
-
-
VD
IOUT=1.0A, Tj=25℃
Tj=25℃
-
V
ISC
Short Circuit Current Limit
-
-
A
Average Temperature
TCVO
IOUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
10/20
KIA7805AF/API~KIA7824AF/API
KIA7818AF/API
ELECTRICAL CHARACTERISTICS (VIN=27V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
18.0
13
4
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
17.3
18.7
360
180
360
180
18.9
8.0
1.0
-
V
21V≦VIN≦33V
24V≦VIN≦30V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
-
12
4
Tj=25℃
mV
250mA
21V≦VIN≦33V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
17.1
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.5
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
21V≦VIN≦33V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
125
68
2.0
0.4
-2.5
f=120Hz, 22V≦VIN≦32V,
IOUT=50mA, Tj=25℃
52
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
11/20
KIA7805AF/API~KIA7824AF/API
KIA7820AF/API
ELECTRICAL CHARACTERISTICS (VIN=29V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
20.0
15
5
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
19.2
20.8
400
200
400
200
21.0
8.0
1.0
-
V
23V≦VIN≦35V
26V≦VIN≦32V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
-
12
4
Tj=25℃
mV
250mA
23V≦VIN≦35V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
19.0
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.6
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
23V≦VIN≦35V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
135
66
2.0
0.4
-3.0
f=120Hz, 24V≦VIN≦34V,
IOUT=50mA, Tj=25℃
50
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
12/20
KIA7805AF/API~KIA7824AF/API
KIA7824AF/API
ELECTRICAL CHARACTERISTICS (VIN=33V, IOUT=500mA, 0℃≦Tj≦125℃)
TEST
CHARACTERISTIC
SYMBOL
VOUT
TEST CONDITION
MIN.
TYP.
24.0
18
6
MAX. UNIT
CIRCUIT
Output Voltage
Fig. 1
Tj=25℃, IOUT=100mA
23.0
25.0
480
240
480
240
25.2
8.0
1.0
-
V
27V≦VIN≦38V
30V≦VIN≦36V
5mA≦IOUT≦1.4A
-
Input Regulation
Load Regulation
Reg line
Reg load
Fig. 1
Fig. 1
Tj=25℃
mV
-
-
12
4
Tj=25℃
mV
250mA
27V≦VIN≦38V
≦
IOUT
≦
750mA
-
VOUT
Output Voltage
Fig. 1
Fig. 1
Fig. 1
Fig. 2
Fig. 3
Fig. 1
Fig. 1
Fig. 1
22.8
-
V
mA
mA
μVrms
dB
5.0mA≦IOUT≦1.0A, Po≦15W
IB
Quiescent Current
Tj=25℃, IOUT=5mA
-
-
4.6
-
Quiescent Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
ΔIB
VNO
RR
27V≦VIN≦38V
Ta=25℃, 10Hz≦f≦100kHz
IOUT=50mA
-
150
66
2.0
0.3
-3.5
f=120Hz, 28V≦VIN≦38V,
IOUT=50mA, Tj=25℃
50
-
-
VD
I
OUT=1.0A, Tj=25℃
-
V
ISC
Short Circuit Current Limit
Tj=25℃
-
-
A
Average Temperature
TCVO
I
OUT=5mA, 0℃≦Tj≦125℃
-
-
mV/℃
Coefficient of Output Voltage
2015. 5. 13
Revision No : 8
13/20
KIA7805AF/API~KIA7824AF/API
2015. 5. 13
Revision No : 8
14/20
KIA7805AF/API~KIA7824AF/API
2015. 5. 13
Revision No : 8
15/20
KIA7805AF/API~KIA7824AF/API
(2) CURRENT BOOST REGULATOR
PRECAUTIONS ON APPLICATION
(1) In regard to GND, be careful not to apply a negative voltage to the input/output terminal. Further, special care is necessary in case
of a voltage boost application.
(2) When a surge voltage exceeding maximum rating is applied to the input terminal or when a voltage in excess of the input terminal
voltage is applied to the output terminal, the circuit may be destroyed. Specially, in the latter case, great care is necessary Further,
if the input terminal shorts to GND in a state of normal operation, the output terminal voltage becomes higher than the input voltage
(GND potential), and the electric charge of a chemical capacitor connected to the output terminal flows into the input side,
which may cause the destruction of circuit. In these cases, take such steps as a zener diode and a general silicon diode are connected
to the circuit, as shown in the following figure.
(3) When the input voltage is too high, the power dissipation of three terminal regulator increase because of series regulator,
so that the junction temperature rises. In such a case, it is recommended to reduce the power dissipation by inserting the power
limiting resistor RSD in the input terminal, and to reduce the junction temperature as a result.
2015. 5. 13
Revision No : 8
16/20
KIA7805AF/API~KIA7824AF/API
The power dissipation PD of IC is expressed in the following equation.
PD = (VIN’-VOUT)· IOUT + VIN’· IB
If VIN’ is reduced below the lowest voltage necessary for the IC, the parasitic oscillation will be caused according to circumstances.
In determining the resistance value of RSD, design with margin should be made by making reference to the following equation.
V
IN - VIN’
RSD
<
IOUT + IB
(4) Connect the input terminal and GND, and the output terminal and GND, by capacitor respectively.
The capacitances should be determined experimentally because they depend on printed patterns. In particular,
adequate investigation should be made so that there is no problem even at time of high or low temperature.
(5) Installation of IC for power supply
For obtaining high reliability on the heat sink design of the regulator IC, it is generally required to derate more than 20%
of maximum junction temperature (Tj MAX.) Further, full consideration should be given to the installation of IC to the heat sink.
(a) Heat sink design
The thermal resistance of IC itself is required from the viewpoint of the design of elements, but the thermal resistance from the
IC package to the open air varies with the contact thermal resistance. Table 1 shows how much the value of the contact thermal
resistance (θ+θ) is changed by insulating sheet (mica) and heat sink grease.
C
S
TABLE 1.
UNIT:℃/W
θ+θ
PACKAGE
MODEL NO.
KIA78xxAPI
TORQUE
MICA
Not Provided
Provided
C
S
0.3∼ 0.5(1.5∼ 2.0)
2.0∼ 2.5(4.0∼ 6.0)
TO-220IS
6kg· cm
The figures given in parentheses denote the values at time of no grease.
The package of regulator IC serves as GND, therefore, usually use the value at time of "no mica"
(b) Silicon grease
When a circuit not exceeding maximum rating is designed, it is to be desired that the grease should be used if possible.
If it is required that the contact thermal resistance is reduced from the view-point of the circuit design,
It is recommended that the following methods be adopted.
A: Use Thercon (Fuji High Polymer Kogyo K.K)
B: Use SC101 (Torei Silicon) or G-640 (GE), if grease is used.
(c) Torque
When installing IC on a heat sink or the like, tighten the IC with the torque of less than the rated value. If it is tightened with
the torque in excess of the rated value, sometimes the internal elements of the IC are adversely affected. Therefore, great care
should be given to the installing operation. Further, if polycarbonate screws are used, the torque causes a change with the passage
of time, which may lessen the effect of radiation.
2015. 5. 13
Revision No : 8
17/20
KIA7805AF/API~KIA7824AF/API
(6) IEC (International Electronical Commission)-65 Specification.
(a) IEC (International Electronical Commission)-65 is the standard, parts testing method, machinery and tolls (used in connecting main
power directly and indirectly) Which are used at home and general building. The purpose of the above standard is not to breaking out the
risk which is related to an electric shock, a heating, a fire and the damage of surrounding parts in the case of normal or abnormal operating.
(b) In case temperature is limited by temperature overheating prevention device, fuse or the operation of fuse resistor
One must calculate the temperature of PCB substrate in 2 minute.
ΔT≤ 110℃ regulated
ΔT=T(The PCB substrate temperature in 2 minute)
-Ta(Ambient temperature)
(c) Graph
As the territory of the deviant line appear by the heat, as the
area is wider, T(The PCB substrate temperature in 2 minute)
is becoming high.
2015. 5. 13
Revision No : 8
18/20
KIA7805AF/API~KIA7824AF/API
2015. 5. 13
Revision No : 8
19/20
KIA7805AF/API~KIA7824AF/API
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Revision No : 8
20/20
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