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LM7812A Datasheet(HTML) 17 Page - Fairchild Semiconductor

Part No. LM7812A
Description  3-TERMINAL 1A POSITIVE VOLTAGE REGULATORS
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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LM7812A Datasheet(HTML) 17 Page - Fairchild Semiconductor

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LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7811A/RA ELECTRICAL CHARACTERISTICS
(Refer to the test circuits. TJ = 0 to +125
°C, I
O = 1A, V I = 18V, C I = 0.33
µF, C
O = 0.1
µF, unless otherwise specified)
* 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.
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Unit
TJ =+25
°C
10.8
11.0
11.2
Output Voltage
VO
IO = 5mA to 1A, PD
≤15W
VI = 13.8 to 26V
10.6
11.0
11.4
V
VI= 12.8 to 26V
IO = 500mA
10
110
Line Regulation
∆V
O
VI= 15 to 21V
4
55
mV
VI= 13.5V to 26V
10
110
VI= 15V to 21V
3
55
TJ =+25
°C
IO = 5mA to 1.5A
12
100
IO = 5mA to 1.0A
12
100
IO = 250 to 750mA
5
50
Quiescent Current
IQ
TJ =+25
°C
5.1
6.0
mA
VI = 13.8V to 26V, TJ=+25
°C
0.8
Quiescent Current Change
∆I
Q
VI = 14V to 27V, IO = 500mA
0.8
mA
IO = 5mA to 1.0A
0.5
Output Voltage Drift
∆V
O/
∆T
IO = 5mA
-1.0
mV /
°C
Output Noise Voltage
VN
f = 10Hz to 100KHz
TA =+25
°C
10
Ripple Rejection
RR
f = 120Hz, IO = 500mA
VI = 14V to 24V
61
dB
Dropout Voltage
VD
IO = 1A, TJ =+25
°C
2.0
V
Output Resistance
RO
f = 1KHz
18
m
Short Circuit Current
ISC
VI= 35V, TA =+25
°C
250
mA
Peak Current
IPK
TJ=+25
°C
2.2
A
Load Regulation
∆V
O
TJ =+25
°C
µV/V
O
mV


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