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L7812AC Datasheet(Hoja de datos) 9 Page - STMicroelectronics

No. de Pieza. L7812AC
Descripción  Positive voltage regulator ICs
Descarga  57 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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 9 page
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L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Doc ID 2143 Rev 30
9/57
5
Electrical characteristics
Refer to the test circuits, TJ = -55 to 150 °C, VI = 10 V, IO = 500 mA, CI = 0.33 µF,
CO = 0.1 µF unless otherwise specified.
Table 4.
Electrical characteristics of L7805
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
4.8
5
5.2
V
VO
Output voltage
IO = 5 mA to 1 A, VI = 8 to 20 V
4.65
5
5.35
V
ΔVO(1)
Line regulation
VI = 7 to 25 V, TJ = 25°C
3
50
mV
VI = 8 to 12 V, TJ = 25°C
1
25
ΔVO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
100
mV
IO = 250 to 750 mA, TJ = 25°C
25
Id
Quiescent current
TJ = 25°C
6
mA
ΔId
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = 8 to 25 V
0.8
ΔVO/ΔT Output voltage drift
IO = 5 mA
0.6
mV/°C
eN
Output noise voltage
B =10 Hz to 100 kHz, TJ = 25°C
40
µV/VO
SVR
Supply voltage rejection
VI = 8 to 18 V, f = 120 Hz
68
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C
2
2.5
V
RO
Output resistance
f = 1 kHz
17
m
Ω
Isc
Short circuit current
VI = 35 V, TJ = 25°C
0.75
1.2
A
Iscp
Short circuit peak current
TJ = 25°C
1.3
2.2
3.3
A
1.
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.




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