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L7912C Scheda tecnica(PDF) 7 Page - STMicroelectronics

Il numero della parte L7912C
Spiegazioni elettronici  Negative voltage regulators
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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L79xxC
Electrical characteristics
Doc ID 2149 Rev 21
7/24
5
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 °C, VI = -10 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF
unless otherwise specified.
Table 4.
Electrical characteristics of L7905C
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, PO ≤ 15 W
VI = -8 to -20 V
-4.75
-5
-5.25
V
ΔVO(1)
Line regulation
VI = -7 to -25 V, TJ = 25°C
100
mV
VI = -8 to -12 V, TJ = 25°C
50
ΔVO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
100
mV
IO = 250 to 750 mA, TJ = 25°C
50
Id
Quiescent current
TJ = 25°C
3
mA
ΔId
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -8 to -25 V
1.3
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.4
mV/°C
eN
Output noise voltage
B = 10Hz to 100kHz, TJ = 25°C
100
µV
SVR
Supply voltage rejection
ΔVI = 10 V, f = 120Hz
54
60
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C, ΔVO = 100 mV
1.4
V
Isc
Short circuit current
2.1
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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