AP78L05/08/12
AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS
AP78L05/08/12
Document number: DS31054 Rev. 10 - 2
1 of 16
www.diodes.com
March 2012
© Diodes Incorporated
Description
The AP78LXX Series is a three terminal positive regulator
available with fixed output voltages from 5V, 8V and 12V,
making them useful in a wide range of applications. When
used as a Zener diode/resistor combination replacement, the
AP78LXX can improve output impedance by two orders of
magnitude, and lower quiescent current. These regulators
can provide local on card regulation, eliminating the
distribution problems associated with single point regulation.
The voltages available allow the AP78LXX's to be used in
logic systems. Instrumentation, HiFi and other solid state
electronic equipment.
The AP78LXX is available in the plastic TO92, SOT89 and
SO-8 using industrial standard package technology. The
regulator can deliver 100mA output current with adequate
heat sinking. Current limiting is included to limit the peak
output current to a safe value. Safe area protection for the
output transistors is provided to limit internal power
dissipation. Thermal overload protection is integrated to
prevent the IC from overheat due to abnormal condition.
Features
• Output voltages of 5.0V, 8.0V, 12V
• Output voltage tolerances of ±5% over the operating
temperature ranges
• Output current in excess of 100mA
• Internal thermal overload protection
• Output transistor safe area protection
• Internal short circuit current limiting
• No external components
• Available in plastic TO92, SOT89 and plastic SO-8 low
profile packages
• Lead Free Package: TO92 (Note 1)
• SO-8 and SOT89: Available in “Green” Molding
Compound (No Br, Sb) (Note 2)
• Lead Free Finish / RoHS Compliant (Note 3)
Pin Assignments
GND
V
OUT
V
IN
TO92
(Bottom View)
SO-8
(Top View)
V
IN
GND
GND
NC
GND
GND
V
OUT
NC
8
7
6
5
1
2
3
4
GND
Top View
123
SOT8
V
OUT
V
IN
Applications
• Communication
• CD-ROM
• DVD-Player
• Set-Top Box
Notes: 1. TO92 is available in “Lead Free” product only.
2. SO-8 and SOT89 are available in “Green” products only.
3. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2). All applicable RoHS exemptions applied.
