UNISONIC TECHNOLOGIES CO., LTD
UZ1084
LINEAR INTEGRATED CIRCUIT
www.unisonic.com.tw
1 of 6
Copyright 2005 Unisonic Technologies Co., Ltd
QW-R102-010,E
5A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
The UTC UZ1084-ADJ/Fixed voltage are low dropout
three-terminal regulators with 5A output current capability. These
devices have been optimized for low voltage applications
including VTT bus termination, where transient response and
minimum input voltage are critical.
On-chip thermal limiting provides protection against any
combination of overload and ambient temperature that would
create excessive junction temperatures.
FEATURES
*Fast transient response
*Low dropout Voltage at up to 5A
*Load regulation : 0.5% typical
*On-chip thermal limiting
APPLICATIONS
*Desktop PCs, RISC and embedded processors' supply
*GTI, SSTL logic Reference bus supply
*Low voltage V
CC
logic supply
*Battery-powered circuitry
*Post regulator for switching supply
*Cable and ADSL modems' DSP core supply
*Set Top Boxes and Web Boxes modules' supply
1
TO-263-3
TO-252
1
TO-220
1
TO-263
1
1
TO-220F
*Pb-free plating product number: UZ1084L-xx
ORDERING INFORMATION
Order Number
Pin Assignment
Normal
Lead Free Plating
Package
1 2 3
Packing
UZ1084-xx-TA3-A-R UZ1084L-xx-TA3-A-R
TO-220
Tape
Reel
UZ1084-xx-TA3-A-T UZ1084L-xx-TA3-A-T
TO-220
Tube
UZ1084-xx-TF3-A-T UZ1084L-xx-TF3-A-T
TO-220F
Tape
Reel
UZ1084-xx-TF3-A-T UZ1084L-xx-TF3-A-T
TO-220F
Tube
UZ1084-xx-TN3-A-R UZ1084L-xx-TN3-A-R
TO-252
Tape
Reel
UZ1084-xx-TN3-A-T UZ1084L-xx-TN3-A-T TO-252
Tube
UZ1084-xx-TQ2-A-R UZ1084L-xx-TQ2-A-R
TO-263
Tape
Reel
UZ1084-xx-TQ2-A-T UZ1084L-xx-TQ2-A-T
TO-263
Tube
UZ1084-xx-TQ3-A-R UZ1084L-xx-TQ3-A-R
TO-263-3
Tape
Reel
UZ1084-xx-TQ3-A-T UZ1084L-xx-TQ3-A-T
TO-263-3
ADJ/
GND
Vout Vin
Tube
Note: xx: Output voltage, refer to Marking Information.
UZ1084L-xx-TA3-A-R
(1)Packing Type
(3)Package Type
(5)Lead Plating
(4)Output Voltage Code
(2)Pin Assignment
(1) R: Tape Reel, T: Tube
(2) refer to Pin Assignment
(3) TA3: TO-220, TF3: TO-220F, TN3: TO-252,
TQ 2: TO-263, TQ3: TO-263-3
(4) xx: refer to Marking Information
(5) L: Lead Free Plating, Blank: Pb/Sn
UZ1084
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
2 of 6
www.unisonic.com.tw
QW-R102-010,E
MARKING INFORMATION
PACKAGE VOLTAGE CODE
MARKING
TO-220
TO-220F
TO-252
TO-263
TO-263-3
1 5 : 1 . 5 V
1 8 : 1 . 8 V
2 5 : 2 . 5 V
3 3 : 3 . 3 V
5 0 : 5 . 0 V
A D : A D J
1
2
3
UTC
UZ1084
VOLTAGE CODE
DATE CODE
LEAD PLATING
THERMAL DATA
PARAMETER SYMBOL
RATINGS
UNIT
TO-252
12
TO-220 4
Thermal Resistance Junction-Case
TO-263
JC
4
C/W
TO-252 112
TO-220 54
Thermal Resistance Junction-Ambient
TO-263
JA
64
C/W
UZ1084
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
3 of 6
www.unisonic.com.tw
QW-R102-010,E
ABSOLUTE MAXIMUM RATINGS
(Ta=25
)
PARAMETER SYMBOL
RATINGS
UNIT
DC Input Voltage
V
IN
15 V
Junction Temperature
T
J
+125
C
Temperature Range
T
OPR
-20 ~ +85
Storage temperature
T
STG
-40 ~ +150
C
Note: 1.Absolute maximum ratings are those values beyond which the device which the device could be permanently
damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2.The device is guaranteed to meet performance specification within 0
~+70
operating temperature range
and assured by design from -20
~+85
, characteristic and correlation with static process control.
ELECTRICAL CHARACTERISTICS
For UZ1084-Adjustable
(Operating Conditions : 4.75 V
IN
5.25,
T
J
=25 unless otherwise specified)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX UNIT
Reference Voltage
V
REF
I
OUT
=10mA
1.23 1.25 1.27
V
Line Regulation
V
OUT
l
OUT
=10mA
0.5
2
%
Load Regulation
V
OUT
10mA
l
OUT
5A
0.5
2.5
%
Dropout Voltage
V
D
V
REF
%=2%, lo=5A
1.5
V
Current Limit
I
LIMIT
(V
IN
-V
OUT
)=2V 5.5
6.5
A
Adjust Pin Current
Iadj
35
100
A
Adjust Pin Current Change
Iadj 1.5V
(V
IN
-V
OUT
)
5.75V, 10mA
l
OUT
5A
5
A
Minimum Load Current
Io(min) 1.5V
(V
IN
-V
OUT
)
5.75V
5
10
mA
Thermal shutdown
150
C
For UZ1084-xx(Fixed Voltage)
(Operating Conditions : 1.5V (V
IN
-V
OUT
) 5.75V
,T
J
=25 unless otherwise specified)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN.
TYP
MAX UNIT
1%
1.485 1.5 1.515
UZ1084-15 l
OUT
=10mA
2%
1.470 1.5 1.530
1%
1.782 1.8 1.818
UZ1084-18 l
OUT
=10mA
2%
1.764 1.8 1.836
1%
2.475 2.5 2.525
UZ1084-25 l
OUT
=10mA
2%
2.450 2.5 2.550
1%
3.267 3.3 3.333
UZ1084-33 l
OUT
=10mA
2%
3.234 3.3 3.366
1%
4.950 5.0 5.050
Output Voltage
V
OUT
UZ1084-50 l
OUT
=10mA
2%
4.900 5.0 5.100
V
Line Regulation
V
OUT
I
OUT
=10mA
0.5
2
%
Load Regulation
V
OUT
10mA
l
OUT
5A
0.5
2.5
%
Dropout Voltage
V
D
V
REF
%=2%, l
OUT
=5A
1.5
V
Current Limit
I
LIMIT
(V
IN
-V
OUT
)=2V 5.5
6.5
A
Minimum Load Current
Iadj 1.5V
(V
IN
-V
OUT
)
5.75V
5
10
mA
Quiescent Current
I
Q
V
IN
=12V
10
13
mA
Thermal shutdown
150
C
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