LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7812A/RA ELECTRICAL CHARACTERISTICS
(Refer to the test circuits. TJ = 0 to +125 °C, IO = 1A, V I = 19V, C I = 0.33µF, C O= 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
IO = 5mA to 1A, PD ≤15W
VI = 14.8 to 27V
VI= 14.8 to 30V
IO = 500mA
VI= 16 to 22V
TJ =+25°C VI= 14.5V to 27V
VI= 16V to 22V
TJ =+25°C
IO = 5mA to 1.5A
IO = 5mA to 1.0A
IO = 250 to 750mA
TJ =+25 °C
VI = 15V to 30V, TJ=+25 °C
VI = 14V to 27V, IO = 500mA
IO = 5mA to 1.0A
IO = 5mA
f = 10Hz to 100KHz
TA =+25 °C
f = 120Hz, IO = 500mA
VI = 14V to 24V
IO = 1A, TJ =+25 °C
f = 1KHz
VI= 35V, TA =+25 °C
TJ=+25 °C
Min
11.75
11.5
Typ Max
Unit
12 12.25
12 12.5
V
10
120
4
120
mV
10
120
3
60
12
100
mV
12
100
5
50
5.1
6.0
mA
0.5
0.8
mA
0.8
-1.0
mV/ °C
10
µV/VO
60
dB
2.0
V
18
mΩ
250
mA
2.2
A
* 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.