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)
ABSOLUTE MAXIMUM RATINGS (TA = +25°C, unless otherwise specified)
Characteristic
Input Voltage (for VO = 5V to 18V)
(for VO = 24V)
Thermal Resistance Junction-Cases
Thermal Resistance Junction-Air
Operating Temperature Range KA78XX/A/R/RA
KA78XXI/RI
Storage Temperature Range
Symbol
VI
VI
RθJC
RθJA
TOPR
TSTG
Value
35
40
5
65
0 ~ +125
-40 ~ +125
-65 ~ +150
Unit
V
V
°C/W
°C/W
°C
°C
°C
LM7805/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test circuit, TMIN < TJ < TMAX, IO = 500mA, VI = 10V, 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
VO
∆VO
∆VO
IQ
∆IQ
∆VO/∆T
VN
RR
VO
RO
ISC
IPK
Test Conditions
TJ =+25 °C
5.0mA ≤ IO ≤1.0A, PO ≤ 15W
VI = 7V to 20V
VI = 8V to 20V
VO = 7V to 25V
TJ=+25°C VI = 8V to 12V
TJ=+25°C IO = 5.0mA to1.5A
IO =250mA to 750mA
TJ =+25 °C
IO = 5mA to 1.0A
VI= 7V to 25V
VI= 8V to 25V
IO= 5mA
f = 10Hz to 100Khz, TA=+25 °C
f = 120Hz
VO = 8 to 18V
IO = 1A, TJ =+25 °C
f = 1KHz
VI = 35V, TA =+25 °C
TJ =+25 °C
LM7805I
LM7805
Min Typ Max Min Typ Max
4.8 5.0 5.2 4.8 5.0 5.2
4.75 5.0 5.25
4.75 5.0 5.25
4.0 100
4.0 100
1.6 50
1.6 50
9 100
9 100
4 50
4 50
5.0 8
5.0 8
0.03 0.5
0.03 0.5
0.3 1.3
0.3 1.3
-0.8
-0.8
42
42
62 73
62 73
2
2
15
15
230
230
2.2
2.2
Unit
V
mV
mV
mA
mA
mV/ °C
µV/Vo
dB
V
mΩ
mA
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. Changes in VO due to heating effects
must be taken into account separately. Pulse testing with low duty is used.
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