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LM7808A Datasheet(PDF) 6 Page - Fairchild Semiconductor

Part # LM7808A
Description  3-Terminal 1A Positive Voltage Regulator
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

LM7808A Datasheet(HTML) 6 Page - Fairchild Semiconductor

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Electrical Characteristics (LM7812)
(Refer to the test circuits.
40qC  TJ  125qC, IO = 500mA, VI = 19V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)
Note 12: 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.
Note 13: These parameters, although guaranteed, are not 100% tested in production.
Electrical Characteristics (LM7815)
(Refer to the test circuits.
40qC  TJ  125qC, IO = 500mA, VI = 23V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)
Note 14: 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.
Note 15: These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
VO
TJ = 25qC
11.5
12.0
12.5
V
5mA
d IO d 1A, PO d 15W, VI = 14.5V to 27V
11.4
12.0
12.6
Line Regulation
Regline
TJ = 25qCVI = 14.5V to 30V
10.0
240
mV
(Note 12)
VI = 16V to 22V
3.0
120
Load Regulation
Regload
TJ = 25qCIO = 5mA to 1.5mA
11.0
240
mV
(Note 12)
IO = 250mA to 750mA
5.0
120
Quiescent Current
IQ
TJ = 25qC–
5.1
8.0
mA
Quiescent Current Change
'IQ
IO = 5mA to 1A
0.1
0.5
mA
VI = 14.5V to 30V
0.5
1.0
Output Voltage Drift (Note 13)
'VO/'TIO = 5mA
1.0
mV/
qC
Output Noise Voltage
VN
f = 10Hz to 100KHz, TA = 25qC
76.0
PV/VO
Ripple Rejection (Note 13)
RR
f = 120Hz, VI = 15V to 25V
55.0
71.0
dB
Dropout Voltage
VDROP
IO = 1A, TJ = 25qC–
2.0
V
Output Resistance (Note 13)
rO
f = 1KHz
18.0
m
:
Short Circuit Current
ISC
VI = 35V, TA = 25qC–
230
mA
Peak Current (Note 13)
IPK
TJ =25qC–
2.2
A
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
VO
TJ = 25qC
14.4
15.0
15.6
V
5mA
d IO d 1A, PO d 15W, VI = 17.5V to 30V
14.25
15.0
15.75
Line Regulation
Regline
TJ = 25qCVI = 17.5V to 30V
11.0
300
mV
(Note 14)
VI = 20V to 26V
3.0
150
Load Regulation
Regload
TJ = 25qCIO = 5mA to 1.5mA
12.0
300
mV
(Note 14)
IO = 250mA to 750mA
4.0
150
Quiescent Current
IQ
TJ = 25qC–
5.2
8.0
mA
Quiescent Current Change
'IQ
IO = 5mA to 1A
0.5
mA
VI = 17.5V to 30V
1.0
Output Voltage Drift (Note 15)
'VO/'TIO = 5mA
1.0
mV/
qC
Output Noise Voltage
VN
f = 10Hz to 100KHz, TA = 25qC
90.0
PV/VO
Ripple Rejection (Note 15)
RR
f = 120Hz, VI = 18.5V to 28.5V
54.0
70.0
dB
Dropout Voltage
VDROP
IO = 1A, TJ = 25qC–
2.0
V
Output Resistance (Note 15)
rO
f = 1KHz
19.0
m
:
Short Circuit Current
ISC
VI = 35V, TA = 25qC–
250
mA
Peak Current (Note 15)
IPK
TJ =25qC–
2.2
A


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