AME8844_07 Datasheet, PDF (1/15 Pages) Analog Microelectronics – 750mA CMOS LDO

AME, Inc.
AME8844
n General Description
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" 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.
n Features
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.
l All AME's Lead Free Products Meet RoHS
Standards
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l PC Peripherals
l Battery Powered Widgets
Rev.E.01
750mA CMOS LDO
n Functional Block Diagram
(Fixed Versions)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
EN
R1
Vref x115%
AMP
PG
Vref x85%
Vref
(Adjustable Version)
IN
R2
GND
OUT
Overcurrent
Shutdown
Thermal
Shutdown
AMP
R1
(external)
EN
1.242V
ADJ
R2
(external)
GND
n Typical Applications
IN
5V
IN
OUT
AME8844
PG
GND EN
C1
1µF
OUT
C3
4.7µF
1