AME, Inc.
AME8850
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General Description
The AME8850 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-25/TSOT-25, SOP-8 & DFN-
8(3mmx3mmx0.75mm) packages are 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 " operating conditions.
The AME8850 is stable with an output capacitance of
2.2µF or greater.
600mA CMOS LDO
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Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
EN
AMP
ADJ
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Features
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Very Low Dropout Voltage
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Guaranteed 600mA Output
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Typical 30µA Quiescent Current
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Output Voltage Accurate to within 2.5%
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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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Power-Saving Shutdown Mode
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Space-Saving SOT-25/TSOT-25, SOP-8 &
DFN-8 (3mmx3mmx0.75mm) Packages
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User Adjustable Output Voltages
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Low Temperature Coefficient
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All AME's Lead Free Products Meet RoHS
Standards
V
REF
=1.2V
GND
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Typical Application
IN
C1
1µF
R2
EN
IN
OUT
OUT
C2
R1
100p
C3
2.2µF
AME8850
GND
ADJ
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Applications
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Instrumentation
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Portable Electronics
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Wireless Devices
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Cordless Phones
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PC Peripherals
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Battery Powered Widgets
V
OUT
= 1.2 ( R1/R2 +1 )
C2 is unnecessary if R1 or R2 < 20 K Ohms
R
R and R use resistance value within 1% accuracy for
a d
correct V
2
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1
OUT
Rev.B.01
1
AME [ ANALOG MICROELECTRONICS ]
