AME8844 Datasheet

  • AME8844

  • 750mA CMOS LDO

  • 552.00KB

  • 15页

  • AME   AME

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AME, Inc.
AME8844
750mA CMOS LDO
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General Description
The AME8844 family of positive, linear regulators fea-
ture low quiescent current (45碌A typ.) with low dropout
voltage, making them ideal for battery applications.
Output voltages are set at the factory and trimmed to
1.5% accuracy.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
An additional feature is a
鈥淧ower
Good鈥?detector, which
pulls low when the output is out of regulation.
The AME8844 is stable with an output capacitance of
4.7碌F or greater.
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Functional Block Diagram
(Fixed Versions)
IN
Overcurrent
Shutdown
OUT
Thermal
Shutdown
EN
Vref x115%
PG
R1
AMP
R2
Vref x85%
Vref
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Features
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Very Low Dropout Voltage
Guaranteed 750mA Output
Accurate to within 1.5%
45碌A Quiescent Current Typically
Over-Temperature Shutdown
Current Limiting
Short Circuit Current Fold-back
Noise Reduction Bypass Capacitor (Fixed
Versions)
Power-Saving Shutdown Mode
Space-Saving MSOP-8 Package
6 Factory Pre-set Output Voltages
Low Temperature Coefficient
Adjustable Version
Power Good Output Function.
GND
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Functional Block Diagram
(Adjustable Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
AMP
R1
EN
ADJ
(external)
1.242V
R2
(external)
GND
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Typical Applications
IN
IN
OUT
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Applications
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Instrumentation
Portable Electronics
Wireless Devices
PC Peripherals
Battery Powered Widgets
OUT
AME8844
PG
GND
EN
C1
5V
1碌F
C3
4.7碌F
1

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