AME, Inc.
AME78XX
1A Positive Linear Regulator
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General Description
The AME78XX 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 AME78XX can be used in logic systems, in-
strumentation, HiFi, and other solid state electronic equip-
ments. When used as a Zener diode/resistor combina-
tion replacement, the AME78XX usually results in an ef-
fective output impedance improvement of two orders of
magnitude, and lower quiescent current.
With adequate heat sinking the AME78XX can deliver
1A output current. Current limiting is included to limit the
peak output current to a safe value.
The AME78XX is available in the plastic TO-220 and
TO-252 packages.
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Functional Block Diagram
Input
Current
Limiting
Amplifier
Thermal
Protection
Output
Error
Amp.
Bandgap
Voltage
GND
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Features
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Guaranteed 1A Output
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Fixed Output Voltage
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Typical Line Regulation
≤
20mV
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Accurate to Within
±
5%
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Internal Short Circuit Current-Limiting
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TO-220 and TO-252 Packages
V
IN
V
OUT
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Typical Application
AME78XX
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Applications
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Post Regulation for Switching Supply
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Microprocessor Power Supply
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Mother Board I/O Power Supply
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Battery Power Circuit
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Instrument
0.33uF
(Note1)
0.1uF
(Note1)
Note1: Bypass Capacitors are recommended for optimum
stability and transient response and should be located as
close as possible to the regulator
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AME [ ANALOG MICROELECTRONICS ]
