AME, Inc.
150mA CMOS LDO
AME8890
n General Description
n Functional Block Diagram
The AME8890 is a fixed 1.2V of positive, linear regula-
tor feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applica-
tions. The space-saving SOT-23-5 package is attractive
for "Pocket" and "Hand Held" applications.
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
This rugged device has both Thermal Shutdown, and
Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
EN
R1
R2
AMP
An additional feature is a "Power Good" detector, which
pulls low when the output is out of regulation.
PG
The AME8890 is stable with an output capacitor of
2.2µF or greater.
Delay
GND
n Features
l Very Low Dropout Voltage
l Guaranteed 150mA Output
l Accurate to within 3%
l 30µA Quiescent Current
n Typical Application
l Over-Temperature Shutdown
l Current Limiting
IN
IN
OUT
OUT
l Short Circuit Current Fold-back
l Power Good Output Function
l Power-Saving Shutdown Mode
l Space-Saving SOT-25 (SOT-23-5)
l Low Temperature Coefficient
AME8890
PG
EN
GND
C1
C2
2.2
5V
1µF
µF
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
1
AME [ ANALOG MICROELECTRONICS ]
