AME, Inc.
AME1085
n
General Description
The AME1085 is a 3A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output voltage
versions. Overcurrent and thermal protection are integrated
onto the chip. Output current will limit as it reaches the
pre-set current or temperature limit. At full rated output
current the dropout voltage is 1.4V (max.). AME1085
series regulators provide excellent regulation over line,
load and temperature variations.
3A Low Dropout
Positive Voltage Regulator
n
Functional Block Diagram
Input
Current
Limiting
Amplifier
Thermal
Protection
Output
n
Features
l
Low Dropout Voltage 1.2V Typically at 3A
l
Adjustable or 3.3V Fixed Voltage
l
Line Regulation Typically 0.015%
l
Load Regulation Typically 0.05%
l
Adjust Pin (ADJ) Current Less than 90µA
l
Overcurrent Protection
l
Thermal Protection
l
Available in TO-263, TO-252, TO-220, SOT-223
l
All AME's Lead Free Products Meet RoHS
Standards
V
IN
V
OUT
Error
Amp.
Bandgap
Reference
ADJ/GND
n
Typical Application
AME1085
GND
n
Applications
l
High Efficiency Linear Regulators
l
Post Regulators for Switching Supplies
l
5V to 3.3V Voltage Converter
l
Battery Charger
4.75V to
7V
10µF
Tan
Tan
10µF
Tan
Load
Rev.N.03
1
AME, Inc.
AME1085
n
Ordering Information (contd.)
Part Number
AME1085ACBT
3A Low Dropout
Positive Voltage Regulator
Marking*
AME1085
ACBT
yyww
AME1085
ACBT
yyww
AME1085
DCBT
yyww
AME1085
DCBT
yyww
AME1085
ACDT-3
yyww
AME1085
ACDT-3
yyww
AME1085
DCDT-3
yyww
AME1085
DCDT-3
yyww
AME1085
ACDT
yyww
AME1085
ACDT
yyww
AME1085
DCDT
yyww
AME1085
DCDT
yyww
BAQyww
Output Voltage
ADJ
Package
TO-220-3
Operating Ambient
Temperature Range
0
o
C to 70
o
C
AME1085ACBTZ
ADJ
TO-220-3
0
o
C to 70
o
C
AME1085DCBT
3.3
TO-220-3
0
o
C to 70
o
C
AME1085DCBTZ
3.3
TO-220-3
0
o
C to 70
o
C
AME1085ACDT-3
ADJ
TO-263-3
0
o
C to 70
o
C
AME1085ACDT-3Z
ADJ
TO-263-3
0
o
C to 70
o
C
AME1085DCDT-3
3.3
TO-263-3
0
o
C to 70
o
C
AME1085DCDT-3Z
3.3
TO-263-3
0
o
C to 70
o
C
AME1085ACDT
ADJ
TO-263-2
0
o
C to 70
o
C
AME1085ACDTZ
ADJ
TO-263-2
0
o
C to 70
o
C
AME1085DCDT
3.3
TO-263-2
0
o
C to 70
o
C
AME1085DCDTZ
AME1085ACGTZ
3.3
ADJ
TO-263-2
SOT-223
0
o
C to 70
o
C
0
o
C to 70
o
C
Note: yyww & yww represents the date code.
* A line on top of the first character represents lead free plating such as AME1085
Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
4
Rev.N.03
AME, Inc.
AME1085
n
Ordering Information
Part Number
AME1085AMCT**
3A Low Dropout
Positive Voltage Regulator
Marking*
AME1085
AMCT
yyww
AME1085
AMCT
yyww
AME1085
MCT
yyww
AME1085
MCT
yyww
Output Voltage
ADJ
Package
TO-252-2
Operating Ambient
Temperature Range
0
o
C to 70
o
C
AME1085AMCTZ**
ADJ
TO-252-2
0
o
C to 70
o
C
AME1085MCT**
3.3
TO-252-2
0
o
C to 70
o
C
AME1085MCTZ**
3.3
TO-252-2
0
o
C to 70
o
C
** This differs from our standard part numbering scheme due to historical precedent,
1. For AME1085ACCT please order AME1085AMCT instead.
2. For AME1085ACCTZ please order AME1085AMCTZ instead.
3. For AME1085DCCT please order AME1085MCT instead.
4. For AME1085DCCTZ please order AME1085MCTZ instead.
Rev.N.03
5
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