L78L18AC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

L78L18AC

POSITIVE VOLTAGE REGULATORS

STMicroelectronics 

L78L00

SERIES

POSITIVE VOLTAGE REGULATORS

s OUTPUT CURRENT UP TO 100 mA

s OUTPUT VOLTAGES OF 3.3; 5; 6; 8; 9; 10;

12; 15; 18; 20; 24V

s THERMAL OVERLOAD PROTECTION

s SHORT CIRCUIT PROTECTION

s NO EXTERNAL COMPONENTS ARE

REQUIRED

s AVAILABLE IN 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 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 L78L00 series used as Zener diode/resistor

combination replacement, offers an effective

output impedance improvement of typically two

TO-92

SO-8

SOT-89

orders of magnitude, along with lower quiescent

current and lower noise.

SCHEMATIC DIAGRAM

July 2003

1/24

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