Solved by
SP1084
TM
5A Low Dropout Linear Regulator
TO-263-3
features
Low Dropout Voltage: 1.3V Typically at 5A
Current Limiting and Thermal Protection
Output Current: 5A
Current Limit: 6.5A
Operating Junction Temperature Range:
0 to 125
o
C
Line Regulation: 0.015% (Typical)
Load Regulation: 0.2% (Typical)
Available in RoHS Compliant, Lead Free Packaging
3
2
1
INPUT
OUTPUT
ADJ/GND
Applications
High Efficiency Linear Regulators
Battery Chargers
Post Regulation for Switching Supply
Microprocessor Supply
Desktop PCs, RISC and Embedded Processors
Supply
general Description
The SP1084 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 5A of load
current.
The series features on-chip thermal limiting which provides protection against any combination of overload and ambient
temperatures that would create excessive junction temperatures. It also includes a trimmed band-gap reference and a current
limiting circuit.
The SP1084 is available in 1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V versions. The fixed versions integrate the adjustment
resistors. It is also available in an adjustable versio n which can set the output voltage with two external resis tors.
The SP1084 series is available in standard packages of TO-263-3, TO-220 and TO-252.
TO-263-3
TO-252
TO-220
Figure . Package Types of SP084
Date: 7/26/06 Rev G
SP084 5A Low Dropout Linear Regulator
© 2006 Sipex Corporation
Pin configuration
V Package
(TO-220)
3
2
1
INPUT
OUTPUT
ADJ/GND
1
ADJ/GND
V2 Package
(TO-252)
3
INPUT
2
OUTPUT
V1 Package
(TO-263-3)
3
2
1
INPUT
OUTPUT
ADJ/GND
Figure 2. Pin Configuration of SP084 (Top View)
functional Block Diagram
3
INPUT
Thermal
Protection
-
+
2
OUTPUT
A
B
A2
For Adjustable Output, disconnect A and A2, connect B
For Fixed Output, connect A and A2, disconnect B
1
ADJ/
GND
Figure . Functional Block Diagram of SP084
Date: 7/26/06 Rev G
SP084 5A Low Dropout Linear Regulator
© 2006 Sipex Corporation
2
Absolute maximum Ratings (note 1)
Parameter
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
ESD (Human Body Model)
Symbol
T
J
T
S
T
LEAD
ESD
-65
Min
Max
150
150
300
2000
Unit
o
C
o
C
C
o
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated under"Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum
Ratings" for extended periods may affect device reliability.
Recommended operating conditions
Parameter
Input Voltage
Operating Junction Temperature Range
Symbol
V
IN
T
J
0
Min
Max
12
125
Unit
V
o
C
Date: 7/26/06 Rev G
SP084 5A Low Dropout Linear Regulator
© 2006 Sipex Corporation
electrical characteristics
Typicals and limits appearing in normal type apply for T
J
= 25
o
C. Limits appearing in
Boldface
type apply over
the entire operating junction temperature range.
Parameter
Reference Voltage
Symbol
V
REF
Conditions
SP1084-ADJ,
I
OUT
= 10mA, V
IN
-V
OUT
= 3V,
10mA I
OUT
5A, 1.5V V
IN
- V
OUT
SP1084-1.5,
I
OUT
= 0mA, V
IN
= 4.5V,
10mA I
OUT
5A, 3.1V V
IN
6V
SP1084-1.8,
I
OUT
= 0mA, V
IN
= 4.8V,
10mA I
OUT
5A, 3.4V V
IN
6V
Output Voltage
V
OUT
SP1084-2.5,
I
OUT
= 0mA, V
IN
= 5.5V,
10mA I
OUT
5A, 4.1V V
IN
7V
SP1084-2.85,
I
OUT
= 0mA, V
IN
= 6V,
10mA I
OUT
5A, 4.5V V
IN
8V
SP1084-3.3,
I
OUT
= 0mA, V
IN
= 6.3V,
10mA I
OUT
5A, 4.9V V
IN
8V
SP1084-5.0,
I
OUT
= 0mA, V
IN
= 8V,
10mA I
OUT
5A, 6.6V V
IN
10V
SP1084-ADJ,
I
OUT
= 10mA, 2.85V V
IN
10V
SP1084-1.5,
I
OUT
= 10mA, 3.1V V
IN
10V
SP1084-1.8,
I
OUT
= 10mA, 3.4V V
IN
10V
SP1084-2.5,
I
OUT
= 10mA, 4.1V V
IN
10V
SP1084-2.85,
I
OUT
= 10mA, 4.5V V
IN
10V
SP1084-3.3,
I
OUT
= 10mA, 4.9V V
IN
10V
SP1084-5.0,
I
OUT
= 10mA, 6.6V V
IN
10V
Min
1.238
1.225
1.485
1.47
1.782
1.764
2.475
2.45
2.822
2.793
3.267
3.234
4.95
4.9
Typ
1.250
1.250
1.5
1.5
1.8
1.8
2.5
2.5
2.85
2.85
3.3
3.3
5
5
0.015
0.035
0.5
1
0.5
1
0.5
1
0.5
1
0.5
1
0.5
1
Max
1.262
1.270
1.515
1.53
1.818
1.836
2.525
2.55
2.879
2.907
3.333
3.366
5.05
5.1
0.2
0.2
6
6
6
6
6
6
6
6
6
6
10
10
Unit
V
5V
V
V
V
V
V
V
%
mV
mV
mV
mV
mV
mV
Line Regulation
V
OUT
Date: 7/26/06 Rev G
SP084 5A Low Dropout Linear Regulator
© 2006 Sipex Corporation
4
electrical characteristics (continued)
the entire operating junction temperature range.
Parameter
Symbol
Conditions
Typicals and limits appearing in normal type apply for T
J
= 25
o
C. Limits appearing in
Boldface
type apply over
Min
Typ
0.1
0.2
3
7
3
7
3
7
3
7
3
7
5
10
1.3
5.5
6.5
3
5
60
72
55
0.2
0.5
0.5
0.003
3
3
4
120
5
10
10
Max
0.3
0.4
15
20
15
20
15
20
15
20
15
20
20
35
1.5
Unit
%
SP1084-ADJ, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
SP1084-1.5, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
SP1084-1.8, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
Load Regulation
V
OUT
SP1084-2.5, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
SP1084-2.85, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
SP1084-3.3, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
SP1084-5.0, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
Dropout Voltage
Current Limit
Minimum
Load Current
Quiescent Current
Ripple Rejection
Adjust Pin Current
Adjust Pin Current
Change
Temperature
Stability
Long Term Stability
RMS Noise
(% of V
OUT
)
Thermal Resistance
Junction -to-Case
JC
mV
mV
mV
mV
mV
mV
V
A
mA
mA
dB
A
A
%
%
%
o
C/W
I
O
= 5A, V
REF
, V
OUT
= 1%
I
LIMIT
V
IN
- V
OUT
= 3V,
V
IN
= 10V (SP1084-ADJ)
V
IN
= 10V (SP1084)
f
RIPPLE
= 120Hz, C
OUT
= 25 F Tantalum,
I
OUT
= 5A, V
IN
- V
OUT
= 3V
V
IN
= 4.25V, I
OUT
= 10mA
10mA I
OUT
5A,
1.5V (V
IN
-V
OUT
) 4.5V
I
OUT
= 10mA, V
IN
- V
OUT
= 1.5
T
A
= 125
o
C, 1000Hrs
10Hz
TO-263
TO-220
TO-252
f
10kHz
Date: 7/26/06 Rev G
SP084 5A Low Dropout Linear Regulator
© 2006 Sipex Corporation
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