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L7918CD2T-TR Scheda tecnica(PDF) 10 Page - STMicroelectronics

Il numero della parte L7918CD2T-TR
Spiegazioni elettronici  Negative voltage regulators
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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Electrical characteristics
L7900 series
10/24
Table 10.
Electrical characteristics of L7924C (refer to the test circuits, TJ = 0 to 125°C, VI = -33V,
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
-23
-24
-24.5
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤15 W
VI = -27 to -38 V
-22.8
-24
-25.2
V
∆VO(1)
Line regulation
VI = -27 to -38 V, TJ = 25°C
480
mV
VI = -30 to -36 V, TJ = 25°C
240
∆VO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
480
mV
IO = 250 to 750 mA, TJ = 25°C
240
Id
Quiescent current
TJ = 25°C
3
mA
∆Id
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -27 to -38 V
1
∆VO/∆T Output voltage drift
IO = 5 mA
-1
mV/°C
eN
Output noise voltage
B = 10Hz to 100KHz, TJ = 25°C
400
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
1.1
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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