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L7905C データシート(PDF) 8 Page - STMicroelectronics

部品番号 L7905C
部品情報  Negative voltage regulators
PDF  21 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7905C データシート(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
L79xxC
8/21
Table 5.
Electrical characteristics of L7908C (refer to the test circuits, TJ = 0 to 125 °C, VI = -14 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
-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
ΔVO(1)
Line regulation
VI = -10.5 to -25 V, TJ = 25°C
160
mV
VI = -11 to -17 V, TJ = 25°C
80
ΔVO(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
ΔId
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -11.5 to -25 V
1
ΔVO/ΔT 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
ΔVI = 10 V, f = 120Hz
54
60
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C, ΔVO = 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.
Table 6.
Electrical characteristics of L7912C (refer to the test circuits, TJ = 0 to 125 °C, VI = -19 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
-11.5
-12
-12.5
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤ 15 W
VI = -15.5 to -27 V
-11.4
-12
-12.6
V
ΔVO(1)
Line regulation
VI = -14.5 to -30 V, TJ = 25°C
240
mV
VI = -16 to -22 V, TJ = 25°C
120
ΔVO(1)
Load regulation
IO = 5 mA to 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
ΔId
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -15 to -30 V
1
ΔVO/ΔT 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
ΔVI = 10 V, f = 120Hz
54
60
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C, ΔVO = 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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