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PDF L78L08AC Data sheet ( Hoja de datos )

Número de pieza L78L08AC
Descripción POSITIVE VOLTAGE REGULATORS
Fabricantes STMicroelectronics 
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No Preview Available ! L78L08AC Hoja de datos, Descripción, Manual

L78L
Positive voltage regulators
Datasheet - production data
Features
Output current up to 100 mA
Output voltages of 3.3; 5; 6; 8; 9; 10; 12; 15;
18; 24 V thermal overload protection
Short-circuit protection
No external components are required
Available in either ± 4% (A) or ± 8% (C)
selection
Description
The L78L series of three-terminal positive
regulators employ internal current limiting and
thermal shutdown, making them essentially
indestructible. If adequate heat-sink is provided,
they can deliver up to 100 mA output current.
They are intended as fixed voltage regulators in a
wide range of applications including local or on-
card regulation for elimination of noise and
distribution problems associated with single-point
regulation. In addition, they can be used with
power pass elements to make high-current
voltage regulators. The L78L series used as
Zener diode/resistor combination replacement,
offers e improvement along with lower quiescent
current and lower noise.
June 2016
DocID2145 Rev 26
This is information on a product in full production.
1/45
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L78L08AC pdf
L78L
Maximum ratings
3
Symbol
VI
IO
PD
TSTG
TOP
Maximum ratings
Table 1: Absolute maximum ratings
Parameter
DC Input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
VO = 3.3 to 9 V
VO = 12 to 15 V
VO = 18 to 24 V
for L78LxxAC / L78LxxC
for L78LxxAB
Value
30
35
40
100
Internally limited (1)
-65 to 150
0 to 125
-40 to 125
Unit
V
mA
mW
°C
°C
Notes:
(1)Our SO-8 package used for voltage regulators is modified internally to have pins 2, 3, 6 and 7 electrically communed to the die
attach flag. This particular frame decreases the total thermal resistance of the package and increases its ability to dissipate power
when an appropriate area of copper on the printed circuit board is available for heat-sinking. The external dimensions are the
same as for the standard SO-8.
Symbol
RthJC
RthJA
Parameter
Table 2: Thermal data
SO-8
Thermal resistance junction-case (max)
Thermal resistance junction-ambient (max)
20
55 (1)
Notes:
(1)Considering 6 cm² of copper Board heat-sink.
TO-92
200
SOT-89
15
55 (1)
Unit
°C/W
°C/W
DocID2145 Rev 26
5/45

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L78L08AC arduino
L78L
Symbol
VO
VO
∆VO
∆VO
Id
∆Id
eN
SVR
Vd
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 °C, VI = 19 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF
unless otherwise specified.
Table 8: Electrical characteristics of L78L12C
Parameter
Test conditions
Min. Typ. Max. Unit
Output voltage
Output voltage
Line regulation
Load regulation
Quiescent current
Quiescent current change
Output noise voltage
Supply voltage rejection
Dropout voltage
TJ = 25 °C
IO = 1 to 40 mA, VI = 14.5 to 27 V
IO = 1 to 70 mA, VI = 19 V
VI = 14.5 to 27 V, TJ = 25 °C
VI = 16 to 27 V, TJ = 25 °C
IO = 1 to 100 mA, TJ = 25 °C
IO = 1 to 40 mA, TJ = 25 °C
TJ = 25 °C
TJ = 125 °C
IO = 1 to 40 mA
VI = 16 to 27 V
B = 10 Hz to 100 kHz, TJ = 25 °C
VI = 15 to 25 V, f = 120 Hz
IO = 40 mA, TJ = 25 °C
11.1 12 12.9 V
10.8 13.2
V
10.8 13.2
250
mV
200
100
mV
50
6.5 mA
6 mA
0.2
mA
1.5
80 µV
36 42
dB
1.7 V
DocID2145 Rev 26
11/45

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