Analog Microelectronics, Inc.
1
AME8802
300mA CMOS LDO
n Typical Application
n Functional Block Diagram
n Features
l Very Low Dropout Voltage
l Guaranteed 300mA Output
l Accurate to within 1.5%
l 30µA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Power Good Output Function
l Power-Saving Shutdown Mode
l Space-Saving SOT-25 (SOT-23-5)
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
n 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.
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
AMP
GND
OUTIN
R1
R2
PG
Overcurrent
Shutdown
Thermal
Shutdown
EN
V
ref
=1.215V
**
V
ref
x90%
V
ref
x110%
AME8802
OUTIN
C2
2.2µF
C1
1µF
GND
OUT
5V
ENPG
IN
** If output voltage specification is lower than 1.215V, Vref will be
trimmed to 1.2V.