
Analog Microelectronics, Inc.
1
AME8817
1.5A CMOS LDO
PRELIMINARY
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Typical Application
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Functional Block Diagram
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Features
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Very Low Dropout Voltage
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Guaranteed 1.5A Output
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Accurate to within 1.5%
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35
μ
A Quiescent Current Typically
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Over-Temperature Shutdown
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Current Limiting
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Short Circuit Current Fold-back
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Noise Reduction Bypass Capacitor
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Power Good Output
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Power-Saving Shutdown Mode
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Space-Saving DDPAK-7 Package
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Low Temperature Coefficien
t
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General Description
The AME8817 family of positive, linear regulators fea-
ture low quiescent current (35
μ
A typ.) with low dropout
voltage, making them ideal for battery applications.
Output voltages are set at the factory and trimmed to
1.5% accuracy.
These rugged devices have both thermal shutdown, and
current fold-back to prevent device failure under the "worst"
of operating conditions.
In applications requiring a low noise, regulated supply,
place a 1000pF capacitor between Bypass and Ground.
An additional feature is a "Power Good" detector, which
pulls low when the output is out of regulation.
The AME8817 is stable with an output capacitance of
4.7
μ
F or greater.
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Applications
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Instrumentation
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Portable Electronics
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Wireless Devices
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PC Peripherals
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Battery Powered Widgets
Overcurrent
Shutdown
Thermal
Shutdown
AMP
GND
OUT
IN
R1
R2
1.24V
PG
EN
BYP (or ADJ)
AME8817
GND
C3
4.7
μ
F
C1
1
μ
F
OUT
PG
EN
5V
BYP
IN
C2
1nF
OUT
IN