AME
AME8818
n
General Description
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 (70µA
typ) low dropout voltage (230mV @ 300mA typ), and excel-
lent PSRR, thus marking them ideal for Data-Communica-
tions and battery applications.
The AME8818 provide over temperature and over current
protected functions. It is stable with an output capacitance of
1µF or larger.
Low Dropout
300mA CMOS Regulator
n
Functional Block Diagram
(Fixed Version)
IN
OUT
Overcurrent
Shutdown
A
Thermal
Shutdown
EN
R1
BYP/NC
Bandgap
Reference
R2
n
Features
l
Input voltage range is from 2.5V to 5.5V
l
Output Voltage Range:
Fixed Version is from 1.2V to 4.5V
ADJ Version is from 0.98V to 4.5V
l
Low Dropout: 230mV @ 300mA
l
Guaranteed 300mA Drive Current
l
Factory Pre-set output voltage
l
Only 1µF Output Capacitor Required for
Stability
l
Provided OTP, current limit
l
Green Products Meet RoHS Standards
Bandgap
Reference
ADJ
R2
(external )
EN
GND
(Adjustable Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
(external )
GND
n
Applications
l
l
l
l
l
Data-Communication
Laptop, Palmtops, Notebook computers
Battery Power Equipment
Handheld Device
PCMCIA Cards
Rev.D.06
1
AME
AME8818
n
Typical Application
(Fixed Version)
(Adjustable Version)
Low Dropout
300mA CMOS Regulator
V
I N
V
OUT
IN
OUT
V
IN
IN
EN
AME8818
OUT
GND
ADJ
V
OUT
EN
AME8818
NC
GND
C
OUT
1µF
C1
1µF
R1
V
REF
R2
C2
4.7µF
C
IN
1µF
Figure 1
Figure 3
V
OUT
IN
EN
OUT
V
IN
C
IN
1µF
EN
ON
OFF
AME8818
GND
C
OUT
1µF
BYP
C2
1nF
Figure 2
2
Rev.D.06
AME
AME8818
n
Pin Configuration
SOT-23
Top View
3
Low Dropout
300mA CMOS Regulator
AME8818AEET
1. GND
2. OUT
3. IN
5
SOT-25
Top View
4
AME8818AEEV
1. IN
2. GND
3. EN
4. BYP
5. OUT
Die Attach:
Conductive Epoxy
AME8818
AME8818
1
2
3
1
2
Die Attach:
Non-Conductive Epoxy
5
SOT-25
Top View
4
AME8818BEEV
1.
2.
3.
4.
5.
IN
GND
EN
NC
OUT
SOT-25
Top View
5
4
AME8818CEEV
1.
2.
3.
4.
5.
EN
GND
IN
OUT
NC
AME8818
1
2
3
AME8818
1
2
3
Die Attach:
Conductive Epoxy
Die Attach:
Conductive Epoxy
SOT-25
Top View
5
4
AME8818
1
2
3
AME8818DEEV
1. IN
2. GND
3. EN
4. ADJ
5. OUT
Die Attach:
Conductive Epoxy
SOT-25
Top View
5
4
AME8818
1
2
3
AME8818EEEV
1. EN
2. GND
3. IN
4. OUT
5. ADJ
Die Attach:
Conductive Epoxy
Rev.D.06
3
AME
AME8818
n
Pin Configuration (Contd.)
SC-70-4 (SC-82)
Top View
4
3
Low Dropout
300mA CMOS Regulator
AME8818AEIU
1. EN
2. GND
3. OUT
4. IN
5
SC-70-5
Top View
4
AME8818AEIV
1. IN
2. GND
3. EN
4. NC
5. OUT
AME8818
AME8818
1
2
1
2
3
Die Attach:
Conductive Epoxy
Die Attach:
Conductive Epoxy
n
Pin Description
Pin Name
IN
GND
OUT
Pin Description
Input voltage pin.
It should be decoupled with 1µF or greater capacitor.
Ground connection pin.
LDO voltage regulator output pin.
It should be decoupled with a 1µF or greater value low ESR ceramic capacitor.
The Enable pin normally floats high.
When pulled low, the PMOS pass transistors shut off, and all internal circuit are powered
down.
No Internal Connection
Bypass capacitor connection.
In AME8818BEEV and AME8818CEEV, IC will select internal circuit to improve ESR.
In AME8818AEEV, IC will select external circuit to improve ESR and AC ripple rejection.
Feedback output voltage for adjustable device.
EN
NC
BYP
ADJ
4
Rev.D.06
AME
AME8818
n
Ordering Information
AME8818 x x x x xxx x
Special Feature1
Output Voltage
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Low Dropout
300mA CMOS Regulator
Pin
Configuration
A: 1. GND
(SOT-23)
2. OUT
3. IN
A: 1.IN
(SOT-25)
2.GND
3.EN
4.BYP
5.OUT
B: 1.IN
(SOT-25)
2.GND
3.EN
4.NC
5.OUT
C: 1.EN
2.GND
3.IN
4.OUT
5.NC
D: 1.IN
2.GND
3.EN
4.ADJ
5.OUT
Operating Ambient
Temperature Range
E: -40
O
C to +85
O
C
Package
Type
E: SOT-2X
I: SC-70 (SC-82)
Number of
Pins
T: 3
U: 4
V: 5
Output Voltage Special Feature 1
120:
130:
150:
180:
250:
280:
285:
290:
300:
310:
320:
330:
360:
390:
450:
ADJ:
V=1.2V
V=1.3V
V=1.5V
V=1.8V
V=2.5V
V=2.8V
V=2.85V
V=2.9V
V=3.0V
V=3.1V
V=3.2V
V=3.3V
V=3.6V
V=3.9V
V=4.5V
Adjustable
Z: Green
(SOT-25)
(SOT-25)
Rev.D.06
5
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