Analog Microelectronics, Inc.
AME8802
300mA CMOS LDO
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General Description
The AME8802 family of positive, linear regulators fea-
ture low quiescent current (30µA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SOT-23-5 package is attractive for
"Pocket" and "Hand Held" applications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under
the "Worst" of operating conditions.
An additional feature is a "Power Good" detector, which
pulls low when the output is out of regulation.
The AME8802 is stable with an output capacitance of
2.2µF or greater.
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Features
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Very Low Dropout Voltage
Guaranteed 300mA Output
Accurate to within 1.5%
30µA Quiescent Current
Over-Temperature Shutdown
Current Limiting
Short Circuit Current Fold-back
Power Good Output Function
Power-Saving Shutdown Mode
Space-Saving SOT-25 (SOT-23-5)
Factory Pre-set Output Voltages
Low Temperature Coefficient
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Applications
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Functional Block Diagram
IN
Overcurrent
Shutdown
OUT
Instrumentation
Portable Electronics
Wireless Devices
Cordless Phones
PC Peripherals
Battery Powered Widgets
Electronic Scales
Thermal
Shutdown
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Typical Application
IN
AMP
R1
IN
PG
GND
OUT
EN
EN
V
ref
x 1 1 0 %
AME8802
C1
5V
1µF
OUT
PG
C2
2.2µF
V
ref
x 9 0 %
V
ref
= 1 . 2 1 5 V
**
R2
GND
** If output voltage specification is lower than 1.215V, Vref will be
trimmed to 1.2V.
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