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PDF L79L12AB Datasheet ( Hoja de datos )

Número de pieza L79L12AB
Descripción NEGATIVE VOLTAGE REGULATORS
Fabricantes STMicroelectronics 
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L79L12AB Hoja de datos, Descripción, Manual
Features
Output current up to 100 mA
Output voltages of -5; -8;-12; -15 V
Thermal overload protection
Short-circuit protection
No external components are required
Available in ±5% (AC) or ± 10% (C)
selection
L79L
Negative voltage regulators
Datasheet - production data
Description
The L79L series of three-terminal negative
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 L79L series used as
Zener diode/resistor combination replacement,
offers an effective output impedance
improvement of typically two orders of magnitude,
along with lower quiescent current and lower
noise.
February 2016
DocID2511 Rev 18
This is information on a product in full production.
1/24
www.st.com

1 page

L79L12AB pdf
L79L
3
Maximum ratings
Maximum ratings
Symbol
Table 1: Absolute maximum ratings
Parameter
Value
VI
IO
PD
TSTG
TOP
DC input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
VO = -5 to -9 V
VO = -12 to -15 V
For L79LXXAC
For L79LXXAB
-30
-35
100
Internally limited (1)
-40 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
Table 2: Thermal data
Parameter
SO-8
Thermal resistance junction-case (Max)
Thermal resistance junction-ambient (Max)
20
55 (1)
TO-92
200
SOT-89
15
115
Unit
°C/W
°C/W
Notes:
(1) Considering 6 cm2 of copper Board heat-sink.
DocID2511 Rev 18
5/24

5 Page

L79L12AB arduino
L79L
5.2
TO-92 packing information
Figure 5: TO-92 tape and reel outline
Package information
DocID2511 Rev 18
11/24

11 Page


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