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AME8834 Datasheet

  • AME8834

  • High PSRR, 150mA CMOS LDO

  • 16頁

  • AME   AME

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AME, Inc.
AME8833/8834
High PSRR, 150mA CMOS LDO
n
General Description
The AME8833 family of positive, linear regulators fea-
ture low quiescent current (50碌A(chǔ) 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鈥檚 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 0.22碌F or
greater.
n
Functional Block Diagram
IN
Overcurrent
Shutdown
OUT
Thermal
Shutdown
SHDN
R1
-
AMP
+
R2
Vref
n
Features
l
l
l
l
Stable with only 0.22碌F output Cap
Very Low Dropout Voltage
Guaranteed 150mA Output
Accurate to within 1.0%
GND
l
50碌A(chǔ) 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
Typical Application
IN
SHDN
IN
OUT
GND
OUT
AME8833
C2
0.22碌F
碌
C1
1碌F
碌
n
Applications
l
l
l
l
l
l
l
l
l
l
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

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