CYStech Electronics Corp.
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 1/4
PL1084E3
CYStek Product Specification
5A Low Dropout Positive Voltage Regulator
PL1084-XXXE3
Features
Dropout Voltage 1.3V at 5A Output Current.
Fast Transient Response.
Extremely Tight Line and Load Regulation.
Current Limiting and Thermal Protection.
Adjustable Output Voltage or Fixed 1.5V, 2.5V,2.85V,3.0V,3.3V,3.5V,5.0V.
Standard 3-Pin Power Packa
ges.
Description
The PL1084-XXXE3 is a low dropout three terminal regulator with 5A output current capability. The output voltage is
adjustable with the use of a resistor divider or fixed 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V. Dropout voltage is
guaranteed to be at maximum of 1.2V with the maximum output current. Its low dropout voltage and fast transient response
make it ideal for low voltage microprocessor applications. Current limit and thermal protection provide protection against
any overload condition that would create excessive junction temperatures.
Applications
Mother Board I/O Power Supplies.
Microprocessor Power Supplies.
High Current Regulator.
Post Regulator for Switching Supply.
Typical Application Circuit
TO-220AB
Adjustable Voltage Regulator
Fixed Voltage Regulator
VREF
PL1084-Adj
1
2
Vin=5V
Vout=3.3V
C2
10F
R1
125
1%
R2
205
1%
C1
10F
ADJ
3
C2
10F
C1
10F
Vout=3.3V
Vin=5V
PL1084-3.3
1
2
3
CYStech Electronics Corp.
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 2/4
PL1084E3
CYStek Product Specification
Ordering Information
Device Output
Voltage
PL1084-AdjE3 Adjustable
PL1084-1.5E3 1.5V
PL1084-2.5E3 2.5V
PL1084-2.85E3 2.85V
PL1084-3.0E3 3.0V
PL1084-3.3E3 3.3V
PL1084-3.5E3 3.5V
PL1084-5.0E3 5.0V
Absolute Maximum Ratings
VIN pin to ADJ/GND pin .............................................................................................................7V
Operating Junction Temperature Range .................................................................................0C~ 125C
Storage Temperature Range............................................................................................- 65C ~ 150C
Thermal Resistance Junction to Case .......................................................................................... 3C /W
Thermal Resistance Junction to Ambient (Assume no ambient airflow, no heatsink) ................................. 50C /W
Lead Temperature (Soldering) 10 sec. ...........................................................................................260C
Electrical Characteristics
(Vin=5V, Io=10mA,Tj=25, unless otherwise noted)
Symbol Parameter
Conditions Min
Typ
Max
Units
V
REF
Reference
Voltage
Tj=25
C
1.238 1.250 1.262
V
Vo
Output Voltage
PL1084-1.5
PL1084-2.5
PL1084-2.85
PL1084-3.0
PL1084-3.3
PL1084-3.5
PL1084-5.0
1.48
2.47
2.82
2.97
3.26
3.46
4.95
1.50
2.50
2.85
3.00
3.30
3.50
5.00
1.52
2.53
2.88
3.03
3.34
3.54
5.05
V
Adj: 2.65V
Vin
7V
Vo
Line Regulation
Fix: Vout+1.4V
Vin
7V
- 0.015 0.2 %
Vo
Load Regulation
10mA
Io
5A
- - 0.4 %
Is Current
Limit
Vin-Vout=3V
5.5
6.8
- A
I
Adj
Adjust Pin Current
2.65V
Vin
7V
- 55
120 A
I
Adj
Adjust Pin Current
Change
2.65V
Vin
7V, 0
C
Tj
125
C
- 0.2 5 A
Ts Temperature
Stability Io=0.5A, 0
C
Tj
125
C
- 0.5 - %
I
L
Minimum Load Current
0
C
Tj
125
C
- 5 10 mA
VN
RMS Output Noise(% of
Vout)
10Hz
f
10KHz
- 0.003 -
%
RR
Ripple Rejection Ratio
Vin-Vout=3V, f=120Hz,
Cout=25F
60 72 - dB
V
D
Dropout
Voltage
Vout,
V
REF
=1%,
10mA
Io
5A
0
C
Tj
125
C
- 1.2 1.3 V
CYStech Electronics Corp.
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 3/4
PL1084E3
CYStek Product Specification
Block Diagram
ADJ
GND
V
OUT
V
IN
55A
V
REF
1.25V
Current Amp.
Thermal
Limit
Current
Limit
For fixed voltage
device
CYStech Electronics Corp.
Spec. No. : C512E3
Issued Date : 2003.03.25
Revised Date :
Page No. : 4/4
PL1084E3
CYStek Product Specification
TO-220AB Dimension
*: Typical
Inches Millimeters
Inches Millimeters
DIM
Min. Max. Min. Max.
DIM
Min. Max. Min. Max.
A 0.2197
0.2949 5.58 7.49 I
-
*
0.1508
-
*
3.83
B 0.3299
0.3504 8.38 8.90 K 0.0295 0.0374 0.75 0.95
C 0.1732 0.185 4.40 4.70 M 0.0449 0.0551 1.14 1.40
D 0.0453
0.0547 1.15 1.39 N
-
*
0.1000
-
*
2.54
E 0.0138
0.0236 0.35 0.60 O 0.5000
0.5618 12.70 14.27
G 0.3803
0.4047 9.66 10.28 P 0.5701
0.6248 14.48 15.87
H -
*
0.6398
-
*
16.25
Notes:
1.Controlling dimension: millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material.
3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Material:
Lead: 42 Alloy ; solder plating
Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
Important Notice:
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek.
CYStek reserves the right to make changes to its products without notice.
CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
A
B
E
G
I
K
M
O
P
3
2
1
C
N
H
D
4
Style: Pin 1.Adj/Gnd 2.Vout3.Vin
4 Vout
3-Lead TO-220AB Plastic Package
CYStek Package Code: E3
Marking:
1084-XXX
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