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L7912CV Datasheet(PDF) 9 Page - STMicroelectronics

Part # L7912CV
Description  Negative voltage regulators
PDF  21 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7912CV Datasheet(HTML) 9 Page - STMicroelectronics

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L79xxC
Electrical characteristics
9/21
Table 7.
Electrical characteristics of L7915C (refer to the test circuits, TJ = 0 to 125 °C, VI = -23 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
-14.4
-15
-15.6
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤ 15 W
VI = -18.5 to -30 V
-14.3
-15
-15.7
V
ΔVO(1)
Line regulation
VI = -17.5 to -30 V, TJ = 25°C
300
mV
VI = -20 to -26 V, TJ = 25°C
150
ΔVO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
300
mV
IO = 250 to 750 mA, TJ = 25°C
150
Id
Quiescent current
TJ = 25°C
3
mA
ΔId
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -18.5 to -30 V
1
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.9
mV/°C
eN
Output noise voltage
B = 10Hz to 100kHz, TJ = 25°C
250
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
1.3
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 8.
Electrical characteristics of L7920C (refer to the test circuits, TJ = 0 to 125 °C, VI = -29 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
-19.2
-20
-20.8
V
VO
Output voltage
IO = -5 mA to -1 A, PO ≤ 15 W
VI = -24 to -35 V
-19
-20
-21
V
ΔVO(1)
Line regulation
VI = -23 to -35 V, TJ = 25°C
400
mV
VI = -26 to -32 V, TJ = 25°C
200
ΔVO(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25°C
400
mV
IO = 250 to 750 mA, TJ = 25°C
200
Id
Quiescent current
TJ = 25°C
3
mA
ΔId
Quiescent current change
IO = 5 mA to 1 A
0.5
mA
VI = -24 to -35 V
1
ΔVO/ΔT Output voltage drift
IO = 5 mA
-1.1
mV/°C
eN
Output noise voltage
B = 10Hz to 100kHz, TJ = 25°C
350
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
0.9
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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