AME, Inc.
AME78LXX
100mA Positive Linear Regulator
n
General Description
The AME78LXX is a fixed output positive regulator. The
regulator can provide local on card regulation, eliminating
the distribution problems associated with single point regu-
lation. The AME78LXX can be used in logic systems,
instrumentation, HiFi, and other solid state electronic
equipments. When used as a Zener diode/resistor com-
bination replacement, the AME78LXX usually results in
an effective output impedance improvement of two orders
of magnitude, and lower quiescent current.
With adequate heat sinking the AME78LXX can deliver
100mA output current. Current limiting is included to limit
the peak output current to a safe value.
The AME78LXX is available in the plastic TO-92, SO-8
and SOT-89 packages.
n
Functional Block Diagram
Input
Current
Limiting
Amplifier
Thermal
Protection
Output
Error
Amp.
Bandgap
Voltage
GND
n
Features
l
Guaranteed 100mA Output
l
Fixed Output Voltage
l
Typical Line Regulation
≤
18mV
l
Accurate to Within
±
5%
l
Internal Short Circuit Current-Limiting
l
TO-92, SO-8, and SOT-89 Package
n
Typical Application
V
IN
AME78LXX
V
OUT
n
Applications
l
Post Regulation for Switching Supply
l
Microprocessor Power Supply
l
Mother Board I/O Power Supply
l
Battery Power Circuit
l
Instrument
Note1: Bypass Capacitors are recommended for optimum
stability and transient response and should be located as
close as possible to the regulator
0.33uF
(Note1)
0.1uF
(Note1)
1
AME [ ANALOG MICROELECTRONICS ]
