L7800AB/AC
o
ELECTRICAL CHARACTERISTICS FOR L7812A
(Vi = 19V, Io = 1 A, Tj = 0 to 125 C (L7812AC),
Tj = -40 to 125 oC (L7812AB)unless otherwise specified)
Symbol
Vo
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
11.75
11.5
Typ.
12
Max.
12.25
12.5
Unit
V
Tj = 25 oC
Vo
Io = 5 mA to 1 A
Vi = 14.8to 27 V
Po 15 W
12
V
≤
V * LineRegulation
o
Vi = 14.8to 30 V Io = 500 mA
Vi = 16 to 22 V
13
16
6
120
120
60
mV
mV
mV
mV
∆
Vi = 16 to 22 V
Tj = 25 oC
Vi = 14.5to 27 V Tj = 25 oC
13
120
∆Vo* Load Regulation
Io = 5 mA to 1 A
25
30
10
100
100
50
mV
mV
mV
Io = 5 mA to 1.5 A Tj = 25 oC
Io = 250 to 750 mA
Id
Quiescent Current
Tj = 25 oC
4.4
6
6
mA
I
Quiescent Current Change
Vi = 15 to 30 V
Vi = 14.8to 27 V
Io = 5 mA to 1 A
Io = 500 mA
Tj = 25 oC
0.8
0.8
0.5
mA
mA
mA
∆
d
SVR Supply Voltage Rejection
Vi = 15 to 25 V
Io = 500 mA
f = 120 Hz
60
dB
Vd
eN
Ro
Isc
Iscp
V
Dropout Voltage
Io = 1 A
Tj = 25 oC
2
V
Output Noise Voltage
Output Resistance
B = 10Hz to 100KHz
Tj = 25 oC
10
18
0.2
2.2
-1
V/V
µ
o
f = 1KHz
m
Ω
Short Circuit Current
Short Circuit Peack Current
Output Voltage Drift
Vi = 35 V Tamb = 25 oC
Tj = 25 oC
A
A
mV/oC
∆
o
∆T
* 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 cycle is used.
9/17
STMICROELECTRONICS [ ST ]
