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KA78TXX 데이터시트(PDF) 2 Page - Fairchild Semiconductor

부품명 KA78TXX
상세설명  3-Terminal 3A Positive Voltage Regulator
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제조업체  FAIRCHILD [Fairchild Semiconductor]
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KA78TXX
2
Absolute Maximum Ratings
Electrical Characteristics(KA78T05)
(VI = 10V, IO = 3.0 A, 0
°C ≤ TJ ≤ +125 °C, Po ≤ PMAX , unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in Vo due heating effects must be taken into
account separately. Pulse testing with low duty is used .( PMAX = 25W)
Parameter
Symbol
Value
Unit
Input Voltage (for VO = 5V to 12V)
(for VO = 15V)
VI
35
40
V
V
Power Dissipation
PD
Internally limited
-
Thermal Resistance, Junction to Air
Tc = +25
°C
R
θJA
65
°C/W
Thermal Resistance ,Junction to Case
R
θJC
2.5
°C/W
Operating Junction Temperature Range
TJ
0 ~ +150
°C
Storage Temperature Range
TSTG
-65 ~ +150
°C
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
Vo
5mA
≤≤≤≤ Io ≤≤≤≤ 3.0A , TJ = +25 °C
7.3V
≤≤≤≤ VI ≤≤≤≤ 20V, 5mA ≤≤≤≤ Io ≤≤≤≤ 2.0A
4.8
4.75
5.0
5.0
5.2
5.25
V
Line Regulation (Note1)
∆VO
7.2V
≤≤≤≤ VI ≤≤≤≤ 35V , Io=5mA, TJ =+25 °C
7.2V
≤≤≤≤ VI ≤≤≤≤ 35V , Io=1.0A, TJ = +25 °C
7.5V
≤≤≤≤ VI ≤≤≤≤ 20V, Io =2.0A
8.0V
≤≤≤≤ VI ≤≤≤≤ 12V, Io =3.0A
-3.0
2.5
mV
Load Regulation (Note1)
∆VO
5mA
≤ Io ≤ 3.0A , TJ = +25 °C
5mA
≤ Io ≤ 3.0A
-
10
15
30
80
mV
mV
Thermal Regulation
REGT
Pulse =10ms, P = 20W
TA = +25
°C
-
0.002
0.03
%Vo/W
Quiescent Current
IQ
5mA
≤ Io ≤ 3.0A , TJ = +25 °C
5mA
≤ Io ≤ 3.0A
-
3.5
4.0
5.0
6.0
mA
mA
Quiescent Current
Change
∆IQ
7.2V
≤ VI ≤ 35V, Io = 5mA
TJ = +25
°C ;
7.5V
≤ VI ≤ 20V, Io =2.0A ;
5mA
≤ Io ≤ 3.0A
-0.1
0.8
mA
Ripple Rejection
RR
f = 120Hz, 8V
≤ VI ≤ 18V, Io = 2.0A
-
75
-
dB
Dropout Voltage
VD
Io = 3A ,TJ = +25
°C-
2.2
2.5
V
Output Noise Voltage
VN
TA = +25
°C, 10Hz ≤ f ≤ 100KHz
-
10
-
µV/Vo
Peak Output Current
IPK
TA = +25
°C-
5.0
-
A
Output Resistance
Ro
f = 1.0kHz
-
2.0
-
m
Short Circuit Current Limit
Isc
VI = 35V, TJ =+25
°C-
1.5
2.5
A
Average Temperature
Coefficient of Output
Voltage
∆VO/∆T Io = 5.0mA
-
0.2
-
mV/
°C


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