Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n
General Description
The AME1084 is a 5A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output volt-
age 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.).
AME1084 series regulators provide excellent regulation
over line, load and temperature variations.
n
Key Features
l
l
l
l
l
l
l
l
Low dropout voltage
…
1.4V at 5A
Adjustable or 3.3V fixed voltage
Line regulation typically 0.015%
Load regulation typically 0.05%
Adjust pin (ADJ) current less than 90µA
Overcurrent protection
Thermal protection
Available in TO-220, TO-263, TO-252
n
Applications
l
l
l
l
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
5V to 3.3V Voltage Converter
Battery Charger
n
Functional Block Diagram
Input
n
Typical Application
V
IN
AME1084
V
O U T
GND
10µF Tan
Load
Current
Limiting
Amplifier
Thermal
Protection
4.75V to 5.25V
10µF Tan
Output
Figure 2
Error
Amp.
Bandgap
Reference
Figure 1
ADJ/GND
1
Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n
Pin Configuration
AME1084
AME 1084
1
2
3
A D J / G N D V
OUT
ADJ/GND
V
IN
V
O U T
V
IN
TO-220 Front View
To-252 Front View
AME 1084
1
2
3
AME 1084
1
2
3
A D J / G N D V
OUT
V
IN
A D J / G N D V
OUT
V
IN
TO-263-2 Front View
TO-263-3 Front View
2
Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n
Ordering Information
P a rt Num be r
A M E 1084A CB T
M a rking
A M E 1084
A CB T
y y ww
A M E 1084
B CB T
y y ww
A M E 1084
CCB T
y y ww
A M E 1084
DCB T
y y ww
A M E 1084
A CDT-3
y y ww
A M E 1084
B CDT-3
y y ww
A M E 1084
CCDT-3
y y ww
A M E 1084
DCDT-3
y y ww
A M E 1084
A CDT
y y ww
A M E 1084
B CDT
y y ww
A M E 1084
CCDT
y y ww
A M E 1084
DCDT
y y ww
A M E 1084
A CCS
y y ww
A M E 1084
B CCS
y y ww
A M E 1084
CCCS
y y ww
A M E 1084
DCCS
y y ww
Output V olta ge
A DJ
P a cka ge
TO-220
A M E 1084B CB T
1.5
TO-220
A M E 1084CCB T
2.5
TO-220
A M E 1084DCB T
3.3
TO-220
A M E 1084A CDT-3
A DJ
TO-263-3
A M E 1084B CDT-3
1.5
TO-263-3
A M E 1084CCDT-3
2.5
TO-263-3
A M E 1084DCDT-3
3.3
TO-263-3
A M E 1084A CDT
A DJ
TO-263-2
A M E 1084B CDT
1.5
TO-263-2
A M E 1084CCDT
2.5
TO-263-2
A M E 1084DCDT
3.3
TO-263-2
A M E 1084A CCS
A DJ
TO-252
A M E 1084B CCS
1.5
TO-252
A M E 1084CCCS
2.5
TO-252
A M E 1084DCCS
3.3
TO-252
3
Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n
Absolute Maximum Ratings
Parameter
Input Voltage
Thermal Resistance (Junction to Case)
TO-220
TO-252
TO-263
TO-220
TO-252
TO-263
Symbol Maximum
V
IN
7
3
5
θ
JC
3
50
90
θ
JA
50
T
J
0 to 125
T
STG
T
LEAD
-65 to 150
260
Unit
V
o
C/W
Thermal Resistance (Junction to Ambient)
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (10 sec)
o
C
4
Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n
Electrical Characteristics
1. 1084AXXX
Parameter
Reference voltage
(adjustable voltage)
Line regulation
Load regulation
Dropout voltage
∆
V
OUT
,
∆
V
REF
= 1%
Current limit
Temperature Coefficient
Adjust pin current
Adjust pin current change
Temperature stability
Minimum load current
RMS output noise
Ripple rejection ratio
Symbol
V
REF
Reg
LINE
Reg
LOAD
V
D
I
S
T
C
I
ADJ
∆
I
ADJ
T
S
I
O
V
N
R
A
V
IN
= 5V
I
O
= 10mA
V
IN
= 2.75 - 7V
I
O
= 10mA
V
IN
= 5V
I
O
= 10mA - 5A
V
IN
= 2.75 - 7V
I
O
= 10mA - 5A
V
IN
= 2.75 - 7V, Over temp.
V
IN
= 2.75 - 7V, I
O
= 10mA - 5A
V
IN
= 2.75 - 7V
I
O
= 10mA - 5A
T
J
= 25
O
C
Over temp.
Test Conditions
T
J
=25 C
T
J
=25
O
C
Over temp.
T
J
=25
O
C
Over temp.
T
J
=25
O
C
Over temp.
O
Min.
1.238
-
-
-
-
-
-
5.0
-
-
-
-
0.5
-
-
60
Typ.
1.250
0.015
0.035
0.05
0.2
1.2
1.3
-
0.005
55
-
0.2
0.5
5
0.003
72
Max.
1.262
1.275
0.2
0.2
0.3
0.4
1.4
-
-
-
-
90
5
-
10
-
-
Units
V
%
%
V
A
%/
O
C
Over temp. 1.225
V
IN
= 2.75 - 7V, I
O
= 10mA - 5A
Over temp.
V
IN
= 5V, I
O
= 500mA, Over temp.
V
IN
= 5V
T
J
= 25
O
C
V
IN
= 5V, I
O
= 5A, Over temp.
µ
A
%
mA
%V
O
dB
2. 1084DXXX
Parameter
Output voltage
(fixed voltage)
Line regulation
Load regulation
Dropout voltage
∆
V
OUT
,
∆
V
REF
= 1%
Current limit
Quiescent current
(fixed model)
Temperature Coefficient
Temperature stability
RMS output noise
Ripple rejection ratio
Symbol
Vo
Reg
LINE
Reg
LOAD
V
D
I
S
I
Q
T
C
T
S
V
N
R
A
V
IN
= 5V
I
O
= 0A
V
IN
= 4.5 - 7V
I
O
= 0A
V
IN
= 5V
I
O
= 0A - 5A
V
IN
= 4.5 - 7V
I
O
= 0A - 5A
V
IN
= 4.5 - 7V, Over temp.
V
IN
=5V, Io=0-5A, Over temp.
V
IN
= 4.5 - 7V, I
O
= 0A - 5A
V
IN
= 5V, I
O
= 500mA, Over temp.
T
J
= 25
O
C
V
IN
= 5V, I
O
= 5A, Over temp.
Test Conditions
T
J
=25
O
C
T
J
=25
O
C
Over temp.
T
J
=25
O
C
Over temp.
T
J
=25
O
C
Over temp.
Min.
3.267
-
-
-
-
-
-
5.0
-
-
0.5
-
60
Typ.
3.300
0.015
0.035
0.05
0.2
1.2
1.3
-
12
0.005
0.5
0.003
72
Max.
3.333
3.366
0.2
0.2
0.3
0.4
1.4
-
-
13
-
-
-
-
Units
V
%
%
V
A
mA
%/
0
C
%
%V
O
dB
5
Over temp. 3.234
电子工程世界
淘e淘
