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L7918CT Fiches technique(PDF) 7 Page - STMicroelectronics

No de pièce L7918CT
Description  Negative voltage regulators
Download  24 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7918CT Fiches technique(HTML) 7 Page - STMicroelectronics

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L7900 series
Electrical characteristics
7/24
Table 4.
Electrical characteristics of L7906C (refer to the test circuits, TJ = 0 to 125°C, VI = -11V,
IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
-5.75
-6
-6.25
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤15 W
VI = -9.5 to -21.5 V
-5.7
-6
-6.3
V
∆VO(1)
Line regulation
VI = -8.5 to -25 V, TJ = 25°C
120
mV
VI = -9 to -15 V, TJ = 25°C
60
∆VO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
120
mV
IO = 250 to 750 mA, TJ = 25°C
60
Id
Quiescent current
TJ = 25°C
3
mA
∆Id
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -9.5 to -25 V
1.3
∆VO/∆T Output voltage drift
IO = 5 mA
-0.6
mV/°C
eN
Output noise voltage
B = 10Hz to 100KHz, TJ = 25°C
144
µV
SVR
Supply voltage rejection
∆VI = 10 V, f = 120Hz
54
60
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C, ∆VO = 100 mV
1.4
V
Isc
Short circuit current
2
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.
Table 5.
Electrical characteristics of L7908C (refer to the test circuits, TJ = 0 to 125°C, VI = -14V,
IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
-7.7
-8
-8.3
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤15 W
VI = -11.5 to -23 V
-7.6
-8
-8.4
V
∆VO(1)
Line regulation
VI = -10.5 to -25 V, TJ = 25°C
160
mV
VI = -11 to -17 V, TJ = 25°C
80
∆VO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
160
mV
IO = 250 to 750 mA, TJ = 25°C
80
Id
Quiescent current
TJ = 25°C
3
mA
∆Id
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -11.5 to -25 V
1
∆VO/∆T Output voltage drift
IO = 5 mA
-0.6
mV/°C
eN
Output noise voltage
B = 10Hz to 100KHz, TJ = 25°C
175
µV
SVR
Supply voltage rejection
∆VI = 10 V, f = 120Hz
54
60
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C, ∆VO = 100 mV
1.1
V
Isc
Short circuit current
1.5
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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