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L7908C Datasheet(PDF) 7 Page - STMicroelectronics

Part # L7908C
Description  Negative voltage regulators
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7908C Datasheet(HTML) 7 Page - STMicroelectronics

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L79xxC
Electrical characteristics
7/21
5
Electrical characteristics
Table 4.
Electrical characteristics of L7905C (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)
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)
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.
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


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