AME, Inc.
1
AME8844
750mA CMOS LDO
n Functional Block Diagram
(Fixed Versions)
l Very Low Dropout Voltage
l Guaranteed 750mA Output
l Accurate to within 1.5%
l 45µA Quiescent Current Typically
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Noise Reduction Bypass Capacitor (Fixed
Versions)
l Power-Saving Shutdown Mode
l Space-Saving MSOP-8 Package
l 6 Factory Pre-set Output Voltages
l Low Temperature Coefficient
l Adjustable Version
l Power Good Output Function.
The AME8844 family of positive, linear regulators fea-
ture low quiescent current (45µA 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.
An additional feature is a “Power Good” detector, which
pulls low when the output is out of regulation.
The AME8844 is stable with an output capacitance of
4.7µF or greater.
l Instrumentation
l Portable Electronics
l Wireless Devices
l PC Peripherals
l Battery Powered Widgets
n General Description
n Features
n Applications
n Functional Block Diagram
(Adjustable Version)
(external)
(external)
Overcurrent
Shutdown
Thermal
Shutdown
AMP
IN
1.242V
GND
OUT
R1
R2
EN
ADJ
GND
OUT
IN
PG
Overcurrent
Shutdown
Thermal
Shutdown
EN
V
ref
V
ref
x85%
V
ref
x115%
AMP
R2
R1
n Typical Applications
AME8844
OUTIN
C3
4.7µF
C1
1µF
GND
OUT
ENPG
IN
5V