AME8833 Datasheet, PDF (1/14 Pages) Analog Microelectronics – High PSRR, 150mA CMOS LDO

AME, Inc.
AME8833/8834
High PSRR, 150mA CMOS LDO
n General Description
The AME8833 family of positive, linear regulators fea-
ture low quiescent current (50µA typ.) low dropout volt-
age and excellent PSRR, thus making them ideal for Tele-
communications and other battery applications. The ul-
tra-small SC-70 package is attractive for "Pocket" and
"Hand Held" applications.
AME8834’s output voltage can be adjusted with an
external resister divider.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
As an additional feature, the AME8833/8834 is stable
with an output capacitance of just extended 0.22µF or
greater.
n Features
l Stable with only 0.22µF output Cap
l Very Low Dropout Voltage
l Guaranteed 150mA Output
l Accurate to within 1.0%
l 50µA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Excellent PSRR (Typ. 70dB)
l Power-Saving Shutdown Mode
l Ultra-small SC-70 and SOT-25-L Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
l Input Voltage Range (2V - 5.5V)
n Applications
l Cellular Phones
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
l Cameras
l Telecommunications
n Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
SHDN
R1
-
AMP
+
R2
Vref
GND
n Typical Application
IN
C1
1µF
SHDN
IN AME8833
GND OUT
OUT
C2
0.22µF
IN
C1
SHDN
OUT
IN _AME8834
GND
OUT
R1
C2
V_REF
R2
1