AME
AME8819
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General Description
The AME8819 is a CMOS linear regulator. It operated from
2.5V to 5.5V input voltage and delivers up to 600mA output
current. The AME8819 provide low quiescent current (70uA
typ) low dropout voltage (Vout=3.3V, 540mV @ 600mA typ),
and excellent PSRR, thus marking them ideal for Data-Com-
munications and battery applications.
The AME8819 provide over temperature and over current
protected functions. It is stable with an output capacitance of
2.2uF or larger.
Bandgap
Reference
Low Dropout
600mA CMOS Regulator
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Functional Block Diagram
(Fixed Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
R2
GND
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Features
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Input voltage range is from 2.8V to 5.5V
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Output voltage range is from 1.8V to 4.5V
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Low Dropout: 540mV @ 600mA, V
OUT
= 3.3V
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Guaranteed 600mA Drive Current
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Factory Pre-set output voltage
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Only 2.2µF Output Capacitor Required for
Stability (Low ESR MLCC is allowable)
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Provided OTP, current limit
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All AME’ s Green Products Meet RoHS
Standards
Bandgap
Reference
ADJ
EN
Overcurrent
Shutdown
(Adjustable Version)
IN
OUT
Thermal
Shutdown
R1
(external)
R2
(external)
GND
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Applications
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Data-Communication
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Laptop, Palmtops, Notebook computers
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Battery Power Equipment
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Handheld Device
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PCMCIA Cards
Rev.B.01
1
AME
AME8819
n
Pin Description
Pin Name
IN
Low Dropout
600mA CMOS Regulator
Pin Description
Input voltage pin.
It should be decoupled with 1µF or greater capacitor.
Ground connection pin.
GND
OUT
LDO voltage regulator output pin.
It should be decoupled with a 2.2µF or greater value low ESR ceramic capacitor.
Enable pin.
When pulled low, the PMOS pass transistor turns off, current consuming less than 10µA.
EN
ADJ
Feedback output voltage for adjustable device.
4
Rev.B.01
嵌入式系统
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