AME
Low Dropout
300mA CMOS Regulator
AME8818
n General Description
n Functional Block Diagram
IN
The AME8818 is a CMOS linear regulator. It operated from
2.5V to 5.5V input voltage and delivers up to 300mA output
current. The AME8818 provide low quiescent current (70uA
typ) low dropout voltage (230mV @ 300mA typ), and excel-
lent PSRR, thus marking them ideal for Data-Communica-
tions and battery applications.
OUT
Overcurrent
Shutdown
A
Thermal
Shutdown
EN
R1
The AME8818 provide over temperature and over current
protected functions. It is stable with an output capacitance of
1uF or larger.
BYP/NC
Bandgap
Reference
R2
GND
n Features
l Input voltage range is from 2.5V to 5.5V
l Output voltage range is from 1.2V to 4.5V
l Low Dropout: 230mV @ 300mA
l Guaranteed 300mA Drive Current
l Factory Pre-set output voltage
l Only 1uF Output Capacitor Required for
Stability
n Typical Application
VOUT
VIN
IN
OUT
EN
AME8818
COUT
1mF
GND
l Provided OTP, current limit
l All AME’ s Green Products Meet RoHS
Standards
NC
CIN
1mF
Figure 1
VOUT
VIN
IN
OUT
CIN
1mF
n Applications
EN AME8818
EN
ON
COUT
1mF
l Data-Communication
GND
BYP
l Laptop, Palmtops, Notebook computers
l Battery Power Equipment
l Handheld Device
OFF
C2
1nF
Figure 2
l PCMCIA Cards
Rev.A.01
1