AME, Inc.
AME8833/8834
High PSRR, 150mA CMOS LDO
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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.
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Functional Block Diagram
IN
Overcurrent
Shutdown
OUT
Thermal
Shutdown
SHDN
R1
-
AMP
+
R2
Vref
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Features
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Stable with only 0.22µF output Cap
Very Low Dropout Voltage
Guaranteed 150mA Output
Accurate to within 1.0%
GND
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50µA Quiescent Current
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Over-Temperature Shutdown
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Current Limiting
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Short Circuit Current Fold-back
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Excellent PSRR (Typ. 70dB)
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Power-Saving Shutdown Mode
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Ultra-small SC-70 and SOT-25-L Package
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Factory Pre-set Output Voltages
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Low Temperature Coefficient
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Input Voltage Range (2V - 5.5V)
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Typical Application
IN
SHDN
IN
OUT
GND
OUT
AME8833
C2
0.22µF
µ
C1
1µF
µ
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Applications
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Cellular Phones
Instrumentation
Portable Electronics
Wireless Devices
Cordless Phones
PC Peripherals
Battery Powered Widgets
Electronic Scales
Cameras
Telecommunications
OUT
IN
SHDN
IN
OUT
AME8834
GND
R1
V
REF
R2
C1
C2
1