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L7912ACV 数据表(PDF) 8 Page - STMicroelectronics

部件名 L7912ACV
功能描述  2 % negative voltage regulators
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L7912ACV 数据表(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
L79xxAC
8/20
Table 5.
Electrical characteristics of L7912AC (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
-11.75
-12
-12.25
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤15 W
VI = -15.5 to -27 V
-11.5
-12
-12.5
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
Iscp
Short circuit peak current
TJ = 25°C
2.5
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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