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LM7805CT Datasheet(PDF) 17 Page - Fairchild Semiconductor

Part No. LM7805CT
Description  3-Terminal 1A Positive Voltage Regulator
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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 17 page
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17
www.fairchildsemi.com
LM78XX/LM78XXA Rev. 1.0
Electrical Characteristics (LM7812A) (Continued)
Refer to the test circuits. 0°C
< TJ < 125°C, IO = 1A, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Note:
29. 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.
30. These parameters, although guaranteed, are not 100% tested in production.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
VO
Output Voltage
TJ = +25°C
11.75
12.0
12.25
V
IO = 5mA to 1A, PO ≤ 15W,
VI = 14.8V to 27V
11.5
12.0
12.5
Regline
Line Regulation(29)
VI = 14.8V to 30V, IO = 500mA
10.0
120
mV
VI = 16V to 22V
4.0
120
TJ = +25°C
VI = 14.5V to 27V
10.0
120
VI = 16V to 22V
3.0
60.0
Regload
Load Regulation(29)
TJ = +25°C, IO = 5mA to 1.5A
12.0
100
mV
IO = 5mA to 1A
12.0
100
IO = 250mA to 750mA
5.0
50.0
IQ
Quiescent Current
TJ = +25°C
5.1
6.0
mA
∆IQ
Quiescent Current Change IO = 5mA to 1A
0.5
mA
VI = 14V to 27V, IO = 500mA
0.8
VI = 15V to 30V, TJ = +25°C
0.8
∆VO/∆T
Output Voltage Drift(30)
IO = 5mA
-1.0
mV/°C
VN
Output Noise Voltage
f = 10Hz to 100kHz, TA = +25°C
10.0
µV/VO
RR
Ripple Rejection(30)
f = 120Hz, IO = 500mA,
VI = 14V to 24V
60.0
dB
VDROP
Dropout Voltage
IO = 1A, TJ = +25°C
2.0
V
rO
Output Resistance(30)
f = 1kHz
18.0
m
ISC
Short Circuit Current
VI = 35V, TA = +25°C
250
mA
IPK
Peak Current(30)
TJ = +25°C
2.2
A




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