AME8803_08 Datasheet, PDF (1/19 Pages) Analog Microelectronics – 300mA CMOS LDO

AME
AME8803 / 8814
n General Description
The AME8803/8814 family of positive, linear regulators
feature low quiescent current (30µA typ.) with low drop-
out voltage, making them ideal for battery applications.
The space-saving SOT-26 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.
An additional feature is a "Power Good" detector, which
pulls low when the output is out of regulation. In applica-
tions requiring a low noise, regulated supply, place a
1000pF capacitor between Bypass and ground.
The AME8803/8814 is stable with an output capaci-
tance of 2.2µF or greater.
n Features
l Very Low Dropout Voltage
l Guaranteed 300mA 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 Noise Reduction Bypass Capacitor
l Power Good Detector
l Power-Saving Shutdown Mode
l Space-Saving SOT-26
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
l All AME's Lead Free Products Meet RoHS
Standards
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
Rev.I.02
300mA CMOS LDO
n Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
EN
R1
BYP
Vrefx110%
PG
AMP
Vref x90%
Vref _=1.215V
R2
GND
n Typical Application
IN
EN
PG
IN _AME8803
BYP GND OUT
C1 C2
5V
1µF 1000pF
OUT
C3
2.2µF
1