AME, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
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General Description
The AME8806/8809/8842 family of positive, linear regu-
lators feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applica-
tions. The space-saving SO-8 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.
In applications requiring a low noise, regulated supply,
place a 1000 pF capacitor between Bypass and ground.
The AME8806/8809/8842 is stable with an output ca-
pacitance of 2.2µF or greater.
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Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
EN
BYP
AMP
R1
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Features
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Very Low Dropout Voltage
Guaranteed 600mA Output
Accurate to within 1.5%
30µA Quiescent Current
Over-Temperature Shutdown
Current Limiting
Short Circuit Current Fold-back
Noise Reduction Bypass Capacitor
Power-Saving Shutdown Mode
V
ref
=1.215V
R2
GND
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Typical Application
INPUT
IN
OUT
OUTPUT
AME8806
AME8809
BYP
GND
EN
C1
5V
1µF
µ
C2
1000pF
C3
2.2µF
µ
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Space-Saving SO-8 Package
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Factory Pre-set Output Voltages
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Low Temperature Coefficient
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Applications
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Instrumentation
Portable Electronics
Wireless Devices
Cordless Phones
PC Peripherals
Battery Powered Widgets
Electronic Scales
INPUT
IN
OUT
OUTPUT
AME8842
PG
GND
EN
C1
5V
1µF
µ
C3
2.2µF
µ
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DSP and ARM Processors
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