7812
Three-terminal positive voltage regulator
TO-220
1.IN
2.GND
Features
1
2
3
3.OUT
Maximum Output current I
OM
: 1.5 A
Output voltage V
o
: 12 V
Continuous total dissipation
2 W (T
a
= 25
℃)
P
D
:
15 W (T
C
= 25
℃)
Dimensions in inches and (millimeters)
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
Parameter
Input Voltage
Thermal resistance junction-air
Thermal resistance junction-cases
Operating Junction Temperature Range
Storage Temperature Range
Symbol
V
i
R
θJA
R
θJC
T
OPR
T
STG
Value
35
65
5
0-125
-65-150
Unit
V
℃/W
℃/W
℃
℃
TYP
12.0
12
10
3
12
4
4.3
MAX
12.5
12.6
240
120
240
120
8
0.5
1.0
-1
75
55
71
2
18
350
2.2
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
mV/℃
μV
dB
V
mΩ
mA
A
ELECTRICAL CHARACTERISTICS
(Vi=19V, Io=500mA,Ci=0.33μF, Co=0.1μF, unless otherwise specified )
Parameter
Output voltage
Symbol
Vo
Test conditions
25℃
Io= 5.0mA-1.0A, P≤15W
14.5V≤ V
i
≤27V
Load Regulation
∆Vo
∆Vo
Iq
∆Iq
△Vo/△T
V
N
RR
V
d
R
O
Isc
Ipk
Vi
1
T
7812
2
Ci
0.33μF
Co
0.1μF
3
5.0mA≤ I
O
≤1.0A
14.5V
≤V
i
≤
30V
I
O
=5mA
f =10Hz to 100KHz
f =120Hz, 15V≤ V
i
≤25V
I
O
=1.0A
f = 1KHz
14.5V≤ Vi
≤30V
16V≤V
i
≤22V
I
O
=5mA - 1.5A
I
O
=250mA - 750mA
Quiescent Current
Quiescent Current Change
Output voltage drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output resistance
Short Circuit Current
Peak Current
TYPICAL APPLICATION
0-125℃
25℃
25℃
25℃
25℃
25℃
0-125℃
0-125℃
0-125℃
25℃
0-125℃
25℃
25℃
25℃
25℃
Vo
MIN
11.5
11.4
Line regulation
Revision:20170701-P1
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