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L7908C Scheda tecnica(PDF) 5 Page - STMicroelectronics

Il numero della parte L7908C
Spiegazioni elettronici  NEGATIVE VOLTAGE REGULATORS
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7908C Scheda tecnica(HTML) 5 Page - STMicroelectronics

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L7900 SERIES
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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).
(*) 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.
ELECTRICAL CHARACTERISTICS OF L7912C (refer to the test circuits, TJ = 0 to 125°C, VI = -19V,
IO =500 mA, CI =2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
TJ = 25°C
-7.7
-8
-8.3
V
VO
Output Voltage
IO =-5mAto -1A PO ≤ 15 W
VI = -11.5 to -23 V
-7.6
-8
-8.4
V
∆V
O(*)
Line Regulation
VI = -10.5 to -25 V
TJ = 25°C
160
mV
VI = -11 to -17 V
TJ = 25°C
80
∆V
O(*)
Load Regulation
IO =5mAto 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
∆I
d
Quiescent Current Change
IO =5mAto 1 A
0.5
mA
VI = -11.5 to -25 V
1
∆V
O/∆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
∆V
I = 10 V
f = 120Hz
54
60
dB
Vd
Dropout Voltage
IO =1A
TJ = 25°C
∆V
O = 100 mV
1.1
V
Isc
Short Circuit Current
1.5
A
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
TJ = 25°C
-11.5
-12
-12.5
V
VO
Output Voltage
IO =-5mAto -1A PO ≤ 15 W
VI = -15.5 to -27 V
-11.4
-12
-12.6
V
∆V
O(*)
Line Regulation
VI = -14.5 to -30 V
TJ = 25°C
240
mV
VI = -16 to -22 V
TJ = 25°C
120
∆V
O(*)
Load Regulation
IO =5mAto 1.5 A
TJ = 25°C
240
mV
IO = 250 to 750 mA
TJ = 25°C
120
Id
Quiescent Current
TJ = 25°C
3
mA
∆I
d
Quiescent Current Change
IO =5mAto 1 A
0.5
mA
VI = -15 to -30 V
1
∆V
O/∆T
Output Voltage Drift
IO = 5 mA
-0.8
mV/°C
eN
Output Noise Voltage
B = 10Hz to 100KHz
TJ = 25°C
200
µV
SVR
Supply Voltage Rejection
∆V
I = 10 V
f = 120Hz
54
60
dB
Vd
Dropout Voltage
IO =1A
TJ = 25°C
∆V
O = 100 mV
1.1
V
Isc
Short Circuit Current
1.5
A


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