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L78L08ABUTR Datasheet(PDF) 15 Page - STMicroelectronics

Part # L78L08ABUTR
Description  Positive voltage regulators
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L78L08ABUTR Datasheet(HTML) 15 Page - STMicroelectronics

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L78LxxAB - L78LxxAC - L78LxxC
Electrical characteristics
15/29
Table 21.
Electrical characteristics of L78L18AC (refer to the test circuits,
VI = 27 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L18AC,
TJ = -40 to 125°C for L78L18AB, unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
17.3
18
18.7
V
VO
Output voltage
IO = 1 to 40 mA, VI = 22 to 33 V
17.1
18.9
V
IO = 1 to 70 mA, VI = 27 V
17.1
18.9
ΔVO
Line regulation
VI = 22 to 33 V, TJ = 25°C
320
mV
VI = 22 to 33 V, TJ = 25°C
270
ΔVO
Load regulation
IO = 1 to 100 mA, TJ = 25°C
170
mV
IO = 1 to 40 mA, TJ = 25°C
85
Id
Quiescent current
TJ = 25°C
6.5
mA
TJ = 125°C
6
mA
ΔId
Quiescent current change
IO = 1 to 40 mA
0.1
mA
VI = 23 to 33 V
1.5
eN
Output noise voltage
B =10 Hz to 100 kHz, TJ = 25°C
120
µV
SVR
Supply voltage rejection
VI = 23 to 33 V, f = 120 Hz
IO = 40 mA, TJ = 25°C
33
38
dB
Vd
Dropout voltage
1.7
V
Table 22.
Electrical characteristics of L78L24AB and L78L24AC (refer to the test circuits,
VI = 33 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = 0 to 125°C for L78L24AC,
TJ = -40 to 125°C for L78L24AB, unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
23
24
25
V
VO
Output voltage
IO = 1 to 40 mA, VI = 27 to 38 V
22.8
25.2
V
IO = 1 to 70 mA, VI = 33 V
22.8
25.2
ΔVO
Line regulation
VI = 27 to 38 V, TJ = 25°C
350
mV
VI = 28 to 38 V, TJ = 25°C
300
ΔVO
Load regulation
IO = 1 to 100 mA, TJ = 25°C
200
mV
IO = 1 to 40 mA, TJ = 25°C
100
Id
Quiescent current
TJ = 25°C
6.5
mA
TJ = 125°C
6
mA
ΔId
Quiescent current change
IO = 1 to 40 mA
0.1
mA
VI = 28 to 38 V
1.5
eN
Output noise voltage
B =10 Hz to 100 kHz, TJ = 25°C
200
µV
SVR
Supply voltage rejection
VI = 29 to 33 V, f = 120 Hz
IO = 40 mA, TJ = 25°C
31
37
dB
Vd
Dropout voltage
1.7
V



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