LM7818I 查看數據表（PDF） - Fairchild Semiconductor
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LM7818I Datasheet PDF : 28 Pages
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LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7818/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test circuit, TMIN<TJ<TMAX, IO =500mA, VI =27V, CI =0.33µF, CO =0.1µF, 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 = 21V to 33V
VI= 22V to 33V
TJ
=+25°C
VI
VI
=
=
21V
24V
to
to
33V
30V
TJ
=+25°C
IO = 5mA to 1.5A
IO = 250mA to 750mA
TJ =+25 °C
IO = 5mA to 1.0A
VI = 21V to 33V
VI = 22V to 33V
IO = 5mA
f = 10Hz to 100Khz, TA =+25 °C
f = 120Hz
VI = 22V to 32V
IO = 1A, TJ=+25 °C
f = 1KHz
VI = 35V, TA=+25 °C
TJ =+25 °C
LM7818I
LM7818
Min Typ Max Min Typ Max
17.3 18 18.7 17.3 18 18.7
17.1 18 18.9
17.1 18 18.9
15 360
15 360
5 180
5 180
15 360
15 360
5.0 180
5.0 180
5.2 8
5.2 8
0.5
0.5
1
1.0
-1
-1
110
110
Unit
V
mV
mV
mA
mA
mV/ °C
µV/VO
53 69
53 69
dB
2
2
V
22
22
mΩ
250
250
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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