L78LxxAB
L78LxxAC - L78LxxC
Positive voltage regulators
Features
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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 ±5% (AC) or ±10% (C)
selection
SO-8
SOT-89
TO-92
Description
The L78Lxx 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 L78Lxx 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.
Table 1.
Device summary
Part numbers
L78L33C
L78L33AC
L78L33AB
L78L05C
L78L05AC
L78L05AB
L78L06AC
L78L06AB
L78L08C
L78L08AC
L78L08AB
L78L09C
L78L09AC
L78L09AB
L78L10AC
L78L12C
L78L12AC
L78L12AB
Rev 16
1/29
www.st.com
29
L78L15C
L78L15AC
L78L15AB
L78L18C
L78L18AC
L78L24C
L78L24AC
L78L24AB
August 2008
STMICROELECTRONICS [ STMICROELECTRONICS ]
