Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
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General Description
The AME8804 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-26 and SOT-25 packages are attrac-
tive 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.
The SOT-26 version also features a "Power Good" de-
tector, which pulls low when the output is out of regula-
tion.
The AME8804 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 Detector (6 pin version only)
Power-Saving Shutdown Mode
Space-Saving SOT-26 and SOT-25
Adjustable 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
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Typical Application
IN
C1
5V
AMP
ADJ
OUT
EN
IN
AME8804
PG
G N D ADJ
Thermal
Shutdown
OUT
C2
R1
100p
C3
2.2µF
R2
EN
V
ref
x110%
1µF
PG
V
ref
x90%
V
ref
=1.215V
GND
V
OUT
= 1.215 (R1 +R2)/R2
C2 is unnecessary when R1 or R2 < 20K
PG pin is only available in the SOT-26 package option
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AME [ ANALOG MICROELECTRONICS ]
