Analog Microelectronics, Inc.
1
AME8801/8812/8840
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 Noise Reduction Bypass Capacitor
l Power-Saving Shutdown Mode
l Space-Saving SOT-25 (SOT-23-5) Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
n General Description
The AME8801/8840 family of positive, linear regulators
feature low quiescent current (30µA typ.) with low drop-
out 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.
In applications requiring a low noise, regulated supply,
place a 1000 pF capacitor between Bypass and Ground.
The AME8801 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
V
ref
=1.215V
BYP
Overcurrent
Shutdown
Thermal
Shutdown
EN
AME8801
OUTPUTINPUT
C3
2.2µF
C1
1µF
GND
OUT
5V
ENBYP
IN
C2
1nF