Analog Microelectronics, Inc.
1
AME8807
600mA CMOS LDO
n Typical Application
n Functional Block Diagram
n Features
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
l Short Circuit Current Fold-back
l Power-Saving Shutdown Mode
l Space-Saving SO-8 Package
l User Adjustable Output Voltages
l Low Temperature Coefficient
n General Description
The AME8807 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 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.
The AME8807 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
V
OUT
= 1.215 ( R1/R2 +1 )
C2 is unnecessary if R1 or R2 < 20kohms
AME8807
OUT
IN
C3
2.2µF
GND ADJ
5V
IN
EN
C2
100p
R1
R2
C1
1µF
PG
OUT
AMP
GND
OUT
IN
ADJ
PG
Overcurrent
Shutdown
Thermal
Shutdown
EN
V
ref
=1.215V
V
ref
x90%
V
ref
x110%