Analog Microelectronics, Inc.
AME8806 / 8809 / 8842
600mA CMOS LDO
n General Description
n Features
The AME8806/8809 family of positive, linear regula-
tors 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.
l Very Low Dropout Voltage
l Guaranteed 600mA Output
l Accurate to within 1.5%
l 30µA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under
the "Worst" of operating conditions.
l Short Circuit Current Fold-back
l Noise Reduction Bypass Capacitor
l Power-Saving Shutdown Mode
l Space-Saving SO-8 Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
In applications requiring a low noise, regulated supply,
place a 1000 pF capacitor between Bypass and ground.
The AME8806/8809 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
n Functional Block Diagram
IN
OUT
l Battery Powered Widgets
l Electronic Scales
Overcurrent
Shutdown
n Typical Application
Thermal
Shutdown
OUT
IN
OUT
IN
EN
BYP
AME8806
AME8809
BYP
EN
GND
R1
R2
C2
C3
C1
AMP
5V
1µF
1 F
µ
2.2
µ
F
V
ref=1.215V
GND
1