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L78L05AB 반도체 회로 부품 판매점

POSITIVE VOLTAGE REGULATORS



STMicroelectronics 로고
STMicroelectronics
L78L05AB 데이터시트, 핀배열, 회로
L78L00
® SERIES
POSITIVE VOLTAGE REGULATORS
s OUTPUT CURRENT UP TO 100 mA
s OUTPUT VOLTAGES OF 3.3; 5; 6; 8; 9; 12;
15; 18; 24V
s THERMAL OVERLOAD PROTECTION
s SHORT CIRCUIT PROTECTION
s NO EXTERNAL COMPONENTS ARE
REQUIRED
s AVAILABLEIN EITHER ± 5% (AC) OR ± 10%
(C) SELECTION
DESCRIPTION
The L78L00 series of three-terminal positive
regulators employ internal current limiting and
thermal shutdown, making them essentially
indestructible. If adequate heatsink 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 L78L00 series used as Zener diode/resistor
combination replacement, offers an effective
SO-8
SOT-89
TO-92
output impedance improvement of typically two
orders of magnetude, along with lower quiescent
current and lower noise.
BLOCK DIAGRAM
February 1999
1/19


L78L05AB 데이터시트, 핀배열, 회로
L78L00
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
Vi DC Input Voltage
Vo = 3.3 V to 9 V
30 V
Vo = 12 V to 15 V
35 V
Vo = 18 V to 24 V
40 V
Io Output Current
100 mA
Ptot Power Dissipation
Tstg Storage Temperature Range
Top Operating Junction Temperature RangeFor L78L00C, L78L00AC
For L78L00AB
Internally limited (*)
- 40 to 150
0 to 125
- 40 to 125
oC
oC
oC
(*) Our SO-8 package used for Voltage Regulators is modified internally to have pins 2, 3, 6 and 7 electrically commoned 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 heatsinking. The external dimensions are the same as for the standard
SO-8
THERMAL DATA
Symbol
Parameter
Rthj- ca se Thermal Resistance Junction-case
Rthj-amb Thermal Resistance Junction-ambient
(*) Considering 6cm2 of copper Board heat-sink
Max
Max
SO-8
20
55 (*)
TO-92
200
SOT-89
15
Unit
oC/W
oC/W
TEST CIRCUITS
2/19




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L78L05AB regulator

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