AME
AME8819
General Description
The AME8819 is a CMOS linear regulator. It operated from
2.8V to 5.5V input voltage and delivers up to 600mA output
current. The AME8819 provide low quiescent current (70μA
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
2.2μF or larger.
Low Dropout
600mA CMOS Regulator
Functional Block Diagram
(Fixed Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
Bandgap
Reference
R2
GND
Features
Input voltage range is from 2.8V to 5.5V
Output Voltage Range:
Fixed Version is from 1.2V to 4.5V
ADJ Version is from 0.98V to 4.5V
Low Dropout: 540mV @ 600mA, V
OUT
= 3.3V
Guaranteed 600mA Drive Current
Factory Pre-set output voltage
Only 2.2μF Output Capacitor Required for
Stability (Low ESR MLCC is allowable)
Provided OTP, current limit
Green Products Meet RoHS Standards
Bandgap
Reference
ADJ
EN
Overcurrent
Shutdown
IN
OUT
(Adjustable Version)
Thermal
Shutdown
R1
(external )
R2
(external )
GND
Applications
Data-Communication
Laptop, Palmtops, Notebook computers
Battery Power Equipment
Handheld Device
PCMCIA Cards
Rev.D.04
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.D.04
嵌入式系统
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