Analog Microelectronics, Inc.
1
AME8817
1.5A CMOS LDO
PRELIMINAR
Y
n Typical Application
n Functional Block Diagram
n Features
l Very Low Dropout Voltage
l Guaranteed 1.5A Output
l Accurate to within 1.5%
l 35µA Quiescent Current Typically
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Noise Reduction Bypass Capacitor
l Power Good Output
l Power-Saving Shutdown Mode
l Space-Saving DDPAK-7 Package
l Low Temperature Coefficient
n General Description
The AME8817 family of positive, linear regulators fea-
ture low quiescent current (35µA typ.) with low dropout
voltage, making them ideal for battery applications.
Output voltages are set at the factory and trimmed to
1.5% accuracy.
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 1000pF capacitor between Bypass and Ground.
An additional feature is a "Power Good" detector, which
pulls low when the output is out of regulation.
The AME8817 is stable with an output capacitance of
4.7µF or greater.
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l PC Peripherals
l Battery Powered Widgets
Overcurrent
Shutdown
Thermal
Shutdown
AMP
GND
OUTIN
R1
R2
1.24V
PG
EN
BYP (or ADJ)
AME8817
C3
4.7µF
C1
1µF
GND
OUT
5V
PG
BYP
IN
C2
1nF
EN
OUT
IN