Date: 7/26/06 Rev G SP084 5A Low Dropout Linear Regulator
2006 Sipex Corporation
SP1084
general Description
The S
P1084
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 S
P1084
is available in 1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V versions. The fixed versions integrate the adjust
ment
resistors. It is also available in an adjustable versio n which can set the output voltage with two external resis tors.
The S
P1084
series is available in standard packages of TO-263-3, TO-220 and TO-252.
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
Applications
High Efficiency Linear Regulators
Battery Chargers
Post Regulation for Switching Supply
Microprocessor Supply
Desktop PCs, RISC and Embedded Processors
Supply
Figure . Package Types of SP084
TO-252
TO-220
TO-263-3
TO-263-3
1
2
3
ADJ/GND
OUTPUT
INPUT
5A Low Dropout Linear Regulator
Solved by
TM
2
Date: 7/26/06 Rev G SP084 5A Low Dropout Linear Regulator
2006 Sipex Corporation
Figure 2. Pin Configuration of SP084 (Top View)
Pin configuration
functional Block Diagram
Figure . Functional Block Diagram of S
P084
V Package
(TO-220)
V
1 Package
(TO-263-3)
INPUT
OUTPUT
ADJ/GND
1
2
3
1
2
3
ADJ/GND
OUTPUT
V
2 Package
(TO-252)
1
2
3
ADJ/GND
OUTPUT
INPUT
INPUT
Thermal
Protection
+
-
For Adjustable Output, disconnect A and A2, connect B
INPUT
OUTPUT
ADJ/
GND
A
A2
B
For Fixed Output, connect A and A2, disconnect B
1
2
3
Date: 7/26/06 Rev G SP084 5A Low Dropout Linear Regulator
2006 Sipex Corporation
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
Symbol
Min
Max
Unit
Operating Junction Temperature Range
T
J
150
o
C
Storage Temperature Range
T
S
-65
150
o
C
Lead Temperature (Soldering, 10 sec.)
T
LEAD
300
o
C
ESD (Human Body Model)
ESD
2000
V
Parameter
Symbol
Min
Max
Unit
Input Voltage
V
IN
12
V
Operating Junction Temperature Range
T
J
0
125
o
C
Absolute maximum Ratings (note 1)
4
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
Parameter
Symbol Conditions
Min
Typ
Max Unit
Reference Voltage V
REF
SP1084-ADJ,
I
OUT
= 10mA, V
IN
-V
OUT
= 3V,
10mA I
OUT
5A, 1.5V V
IN
- V
OUT
5V
1.238
1.225
1.250
1.250
1.262
1.270
V
Output Voltage
V
OUT
SP1084-1.5,
I
OUT
= 0mA, V
IN
= 4.5V,
10mA I
OUT
5A, 3.1V V
IN
6V
1.485
1.47
1.5
1.5
1.515
1.53
V
SP1084-1.8,
I
OUT
= 0mA, V
IN
= 4.8V,
10mA I
OUT
5A, 3.4V V
IN
6V
1.782
1.764
1.8
1.8
1.818
1.836
V
SP1084-2.5,
I
OUT
= 0mA, V
IN
= 5.5V,
10mA I
OUT
5A, 4.1V V
IN
7V
2.475
2.45
2.5
2.5
2.525
2.55
V
SP1084-2.85,
I
OUT
= 0mA, V
IN
= 6V,
10mA I
OUT
5A, 4.5V V
IN
8V
2.822
2.793
2.85
2.85
2.879
2.907
V
SP1084-3.3,
I
OUT
= 0mA, V
IN
= 6.3V,
10mA I
OUT
5A, 4.9V V
IN
8V
3.267
3.234
3.3
3.3
3.333
3.366
V
SP1084-5.0,
I
OUT
= 0mA, V
IN
= 8V,
10mA I
OUT
5A, 6.6V V
IN
10V
4.95
4.9
5
5
5.05
5.1
V
Line Regulation
V
OUT
SP1084-ADJ,
I
OUT
= 10mA, 2.85V V
IN
10V
0.015
0.035
0.2
0.2
%
SP1084-1.5,
I
OUT
= 10mA, 3.1V V
IN
10V
0.5
1
6
6
mV
SP1084-1.8,
I
OUT
= 10mA, 3.4V V
IN
10V
0.5
1
6
6
mV
SP1084-2.5,
I
OUT
= 10mA, 4.1V V
IN
10V
0.5
1
6
6
mV
SP1084-2.85,
I
OUT
= 10mA, 4.5V V
IN
10V
0.5
1
6
6
mV
SP1084-3.3,
I
OUT
= 10mA, 4.9V V
IN
10V
0.5
1
6
6
mV
SP1084-5.0,
I
OUT
= 10mA, 6.6V V
IN
10V
0.5
1
10
10
mV
the entire operating junction temperature range.
5
Date: 7/26/06 Rev G SP084 5A Low Dropout Linear Regulator
2006 Sipex Corporation
electrical characteristics (continued)
Parameter
Symbol Conditions
Min
Typ
Max
Unit
Load Regulation
V
OUT
SP1084-ADJ, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
0.1
0.2
0.3
0.4
%
SP1084-1.5, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
3
7
15
20
mV
SP1084-1.8, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
3
7
15
20
mV
SP1084-2.5, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
3
7
15
20
mV
SP1084-2.85, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
3
7
15
20
mV
SP1084-3.3, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
3
7
15
20
mV
SP1084-5.0, 0mA I
OUT
5A,
V
IN
- V
OUT
= 3V
5
10
20
35
mV
Dropout Voltage
I
O
= 5A, V
REF
, V
OUT
= 1%
1.3
1.5
V
Current Limit
I
LIMIT
V
IN
- V
OUT
= 3V,
5.5
6.5
A
Minimum
Load Current
V
IN
= 10V (SP1084-ADJ)
3
10
mA
Quiescent Current
V
IN
= 10V (SP1084)
5
10
mA
Ripple Rejection
f
RIPPLE
= 120Hz, C
OUT
= 25 F Tantalum,
I
OUT
= 5A, V
IN
- V
OUT
= 3V
60
72
dB
Adjust Pin Current
V
IN
= 4.25V, I
OUT
= 10mA
55
120
A
Adjust Pin Current
Change
10mA I
OUT
5A,
1.5V (V
IN
-V
OUT
) 4.5V
0.2
5
A
Temperature
Stability
I
OUT
= 10mA, V
IN
- V
OUT
= 1.5
0.5
%
Long Term Stability
T
A
= 125
o
C, 1000Hrs
0.5
%
RMS Noise
(% of V
OUT
)
10Hz f 10kHz
0.003
%
Thermal Resistance
Junction -to-Case
JC
TO-263
TO-220
TO-252
3
3
4
o
C/W
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.
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