KA78XXAR 查看數據表（PDF） - Fairchild Semiconductor
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KA78XXAR Datasheet PDF : 28 Pages
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LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7812/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test circuit, TMIN <TJ <TMAX, IO=500mA, VI=19V, CI= 0.33µF, CO= 0.1.µF, unless otherwise specified)
Characteristic
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
Test Conditions
VO
∆VO
∆VO
IQ
∆IQ
∆VO/∆T
VN
RR
VD
RO
ISC
IPK
TJ =+25 °C
5.0mA ≤ IO≤1.0A, PD≤15W
VI = 14.5V to 27V
VI= 15.5V to 27V
TJ
=+25°C
VI
VI
=
=
14.5V to 30V
16V to 22V
TJ =+25°C IO = 5mA to 1.5A
IO = 250mA to 750mA
TJ =+25 °C
IO = 5mA to 1.0A
VI = 14.5V to 30V
VI = 15V to 30V
IO = 5mA
f = 10Hz to 100Khz, TA =+25 °C
f = 120Hz
VI = 15V to 25V
IO = 1A, TJ=+25 °C
f = 1KHz
VI = 35V, TA=+25 °C
TJ = +25 °C
LM7812I
LM7812
Min Typ Max Min Typ Max
11.5 12 12.5 11.5 12 12.5
11.4 12 12.6
11.4 12 12.6
10 240
10 240
3.0 120
3.0 120
11 240
11 240
5.0 120
5.0 120
5.1 8
5.1 8
0.1 0.5
0.1 0.5
0.5 1.0
1.0
0.5 -1
-1
76
76
Unit
V
mV
mV
mA
mA
mV/ °C
mV/VO
55 71
55 71
dB
2
2
V
18
18
mΩ
230
230
mA
2.2
2.2
A
TMIN <TJ <TMAX
LM78XXI/RI: TMIN= - 40 °C, TMAX = +125 °C
LM78XX/R: TMIN= 0 °C, TMAX= +125 °C
* Load and line regulation are specified at constant, junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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