* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken
into account separately. Pulce testing with low duty cycle is used.
ELECTRICAL CHARACTERISTICS FOR L7812 (refer to the test circuits, Tj=-55to150o
C,
Vi= 19V, Io= 500 mA, Ci=0.33µF, Co=0.1µF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VoOutput Voltage Tj=25o
C 11.5 12 12.5 V
VoOutput Voltage Io= 5 mA to 1 A Po≤15 W
Vi= 15.5 to 27 V 11.4 12 12.6 V
∆Vo* Line Regulation Vi= 14.5 to 30 V Tj=25o
C
V
i=16to22V T
j=25o
C120
60 mV
mV
∆Vo* Load Regulation Io= 5 to 1500 mA Tj=25o
C
I
o= 250 to 750 mA Tj=25o
C100
60 mV
mV
IdQuiescent Current Tj=25o
C6mA
∆I
d
Quiescent Current Change Io= 5 to 1000 mA 0.5 mA
∆IdQuiescent Current Change Vi= 15 to 30 V 0.8 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA 1.5 mV/oC
eN Output Noise Voltage B = 10Hz to 100KHz Tj=25o
C40µV/VO
SVR Supply Voltage Rejection Vi= 15 to 25 V f = 120 Hz 61 dB
VdDropout Voltage Io=1A T
j=25o
C 2 2.5 V
RoOutput Resistance f = 1 KHz 18 mΩ
Isc Short Circuit Current Vi=35V T
j=25o
C 0.75 1.2 A
Iscp Short Circuit Peak Current Tj=25o
C 1.3 2.2 3.3 A
ELECTRICAL CHARACTERISTICS FOR L7808 (refer to the test circuits, Tj=-55to150o
C,
Vi= 14V, Io= 500 mA, Ci=0.33µF, Co=0.1µF unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VoOutput Voltage Tj=25o
C 7.7 8 8.3 V
VoOutput Voltage Io= 5 mA to 1 A Po≤15 W
Vi= 11.5 to 23 V 7.6 8 8.4 V
∆Vo* Line Regulation Vi= 10.5 to 25 V Tj=25o
C
V
i=11to17V T
j=25o
C80
40 mV
mV
∆Vo* Load Regulation Io= 5 to 1500 mA Tj=25o
C
I
o= 250 to 750 mA Tj=25o
C100
40 mV
mV
IdQuiescent Current Tj=25o
C6mA
∆I
d
Quiescent Current Change Io= 5 to 1000 mA 0.5 mA
∆IdQuiescent Current Change Vi= 11.5 to 25 V 0.8 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA 1 mV/oC
eN Output Noise Voltage B = 10Hz to 100KHz Tj=25o
C40µV/VO
SVR Supply Voltage Rejection Vi= 11.5 to 21.5 V f = 120 Hz 62 dB
VdDropout Voltage Io=1A T
j=25o
C 2 2.5 V
RoOutput Resistance f = 1 KHz 16 mΩ
Isc Short Circuit Current Vi=35V T
j=25o
C 0.75 1.2 A
Iscp Short Circuit Peak Current Tj=25o
C 1.3 2.2 3.3 A
L7800 SERIES
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