AME8803(2001) データシートの表示（PDF） - AME, Inc
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AME8803 Datasheet PDF : 13 Pages
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Analog Microelectronics, Inc.
AME8803/8814
300mA CMOS LDO
n General Description
The AME8803 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 SOT-23-6 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 appli-
cations requiring a low noise, regulated supply, place a
1000pF capacitor between Bypass and ground.
The AME8803 is stable with an output capacitance of
2.2µF or greater.
n Functional Block Diagram
IN
Overcurrent
Shutdown
EN
BYP
PG
Thermal
Shutdown
Vref x110%
AMP
OUT
R1
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 (SOT-23-6)
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
n Typical Application
IN
EN
PG
INAME8803
BYP GND OUT
C1 C2
5V 1µF 1nF
OUT
C3
2.2µF
Vref x90%
V ref= 1 . 2 1 5 V
R2
GND
1
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