AP78L12YG-13 Datasheet, PDF (2/16 Pages) Diodes Incorporated – AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS

AP78L05/08/12
AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS
Typical Application Circuit
Input
C1^†
0.33µF
Fixed Output Regulator
IN
OUT
AP78Lxx
GND
Output
C2^‡
0.1µF
(†) Required if the regulator is located more than 3” from the power supply filter
(‡) See Note 5 in the electrical characteristics table
Pin Descriptions
Pin Name
V_IN
V_OUT
GND
NC
Description
Operating Voltage Input
Voltage Output Pin
Ground
No Connection
Functional Block Diagram
Introduction
The AP78LXX series is a three terminal device with fixed output voltages from 5V,8V and 12V. The AP78LXX fixed voltage
regulator series has built-in thermal overload protection which prevents the device from being damaged due to excessive
junction temperature. The regulator also contains internal short-circuit protection which limits the maximum output current, and
safe-area protection for the pass transistor which reduces the short-circuit current as the voltage across the pass transistor is
increased.
AP78L05/08/12
Document number: DS31054 Rev. 10 - 2
2 of 16
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March 2012
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