UNISONIC TECHNOLOGIES CO., LTD
UZ1084
5A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
The UTC
UZ1084-ADJ/Fixed
voltages 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.
LINEAR INTEGRATED CIRCUIT
FEATURES
*Fast transient response
*Low dropout Voltage at up to 5A
*Load regulation : 0.5% typical
*On-chip thermal limiting
Lead-free:
UZ1084L-xx
Halogen-free: UZ1084G-xx
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
ORDERING INFORMATION
Normal
UZ1084-xx-TA3-R
UZ1084-xx-TA3-T
UZ1084-xx-TF3-T
UZ1084-xx-TF3-T
UZ1084-xx-TN3-R
UZ1084-xx-TN3-T
UZ1084-xx-TQ2-R
UZ1084-xx-TQ2-T
UZ1084-xx-TQ3-R
UZ1084-xx-TQ3-T
Ordering Number
Lead Free
UZ1084L-xx-TA3-R
UZ1084L-xx-TA3-T
UZ1084L-xx-TF3-T
UZ1084L-xx-TF3-T
UZ1084L-xx-TN3-R
UZ1084L-xx-TN3-T
UZ1084L-xx-TQ2-R
UZ1084L-xx-TQ2-T
UZ1084L-xx-TQ3-R
UZ1084L-xx-TQ3-T
Halogen Free
UZ1084G-xx-TA3-R
UZ1084G-xx-TA3-T
UZ1084G-xx-TF3-T
UZ1084G-xx-TF3-T
UZ1084G-xx-TN3-R
UZ1084G-xx-TN3-T
UZ1084G-xx-TQ2-R
UZ1084G-xx-TQ2-T
UZ1084G-xx-TQ3-R
UZ1084G-xx-TQ3-T
Package
TO-220
TO-220
TO-220F
TO-220F
TO-252
TO-252
TO-263
TO-263
TO-263-3
TO-263-3
Pin Assignment
1
2
3
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
ADJ/
GND
V
OUT
V
IN
Note: xx: Output voltage, refer to Marking Information.
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QW-R102-010,G
UZ1084
MARKING INFORMATION
PACKAGE
TO-220
TO-220F
TO-252
TO-263
TO-263-3
VOLTAGE CODE
15
18
25
33
50
AD
:1.5V
:1.8V
:2.5V
:3.3V
:5.0V
:ADJ
LINEAR INTEGRATED CIRCUIT
MARKING
THERMAL DATA
PARAMETER
TO-252
Thermal Resistance Junction-Case
TO-220
TO-263
TO-252
TO-220
TO-263
θ
JC
SYMBOL
RATINGS
12
4
4
112
54
64
UNIT
°C/W
Thermal Resistance Junction-Ambient
θ
JA
°C/W
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QW-R102-010,G
UZ1084
ABSOLUTE MAXIMUM RATINGS
(Ta=25°С)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
DC Input Voltage
V
IN
15
V
Operating Junction Temperature Range
T
J
0 ~ +125
°С
Storage Temperature Range
T
STG
-65 ~ 150
°С
Note: 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.
ELECTRICAL CHARACTERISTICS
For UZ1084-Adjustable
(Operating Conditions : 4.75
≦
V
IN
≦
5.25, T
J
=25°С unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Reference Voltage
V
REF
I
OUT
=10mA
Line Regulation
ΔV
OUT
l
OUT
=10mA
Load Regulation
ΔV
OUT
10mA≦l
OUT
≦
5A
Dropout Voltage
V
D
△
V
REF
%=2%, lo=5A
Current Limit
I
LIMIT
(V
IN
-V
OUT
)=2V
Adjust Pin Current
Iadj
Adjust Pin Current Change
ΔIadj
1.5V
≦
(V
IN
-V
OUT
)
≦
5.75V, 10mA≦l
OUT
≦
5A
Minimum Load Current
Io(min) 1.5V
≦
(V
IN
-V
OUT
)
≦
5.75V
Thermal shutdown
MIN
1.23
TYP
1.25
0.5
0.5
6.5
35
5
150
MAX
1.27
2
2.5
1.5
100
5
10
UNIT
V
%
%
V
A
μA
μA
mA
°C
5.5
For UZ1084-xx(Fixed Voltage)
(Operating Conditions : 1.5V
≦
(V
IN
-V
OUT
)
≦
5.75V,T
J
=25°С unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
1%
UZ1084-15 l
OUT
=10mA
2%
1%
UZ1084-18 l
OUT
=10mA
2%
1%
Output Voltage
V
OUT
UZ1084-25 l
OUT
=10mA
2%
1%
UZ1084-33 l
OUT
=10mA
2%
1%
UZ1084-50 l
OUT
=10mA
2%
Line Regulation
ΔV
OUT
I
OUT
=10mA
Load Regulation
ΔV
OUT
10mA≦l
OUT
≦
5A
Dropout Voltage
V
D
△
V
REF
%=2%, l
OUT
=5A
Current Limit
I
LIMIT
(V
IN
-V
OUT
)=2V
Minimum Load Current
ΔIadj
1.5V
≦
(V
IN
-V
OUT
)
≦
5.75V
Quiescent Current
I
Q
V
IN
=12V
Thermal shutdown
MIN.
1.485
1.470
1.782
1.764
2.475
2.450
3.267
3.234
4.950
4.900
TYP
1.5
1.5
1.8
1.8
2.5
2.5
3.3
3.3
5.0
5.0
0.5
0.5
6.5
5
10
150
MAX UNIT
1.515
1.530
1.818
1.836
2.525
V
2.550
3.333
3.366
5.050
5.100
2
%
2.5
%
1.5
V
A
10
mA
13
mA
°C
5.5
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QW-R102-010,G
UZ1084
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
Adjustable Voltage Regulator
UZ1084-ADJ
V
IN
=5V
+
10μF
V
IN
ADJ
124
Ω
+
V
OUT
V
OUT
=2.5V
at 5A
22μF
124
Ω
Fixed Voltage Regulator
UZ1084-1.5
V
IN
=3.3V
+
10μF
V
IN
V
OUT
GND
+
V
OUT
=1.5 V
at 5A
22μF
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QW-R102-010,G
UZ1084
TYPICAL CHARACTERISTICS
Load Regulation
2
1.95
Output Voltage, V
OUT
(V)
1.9
1.85
1.8
1.75
1.7
1.65
1.6
1.55
1.5
0
1
2
3
4
Output Current, I
OUT
(A)
5
V
IN
=3.3V,V
OUT
=1.8V
LINEAR INTEGRATED CIRCUIT
Load Regulation
2.6
2.58
Output Voltage, V
OUT
(V)
2.56
2.54
2.52
2.5
2.48
2.46
2.44
2.42
2.4
0
2
3
4
1
Output Current, I
OUT
(A)
5
V
IN
=4,V
OUT
=2.5V
Load Regulation
3.5
3.45
Output Voltage, V
OUT
(V)
3.4
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
0
2
3
4
1
Output Current, I
OUT
(A)
5
V
IN
=4.8V,V
OUT
=3.3V
5.2
5.15
Output Voltage, V
OUT
(V)
5.1
5.05
5
4.95
4.9
4.85
4.8
4.75
4.7
0
1
Load Regulation
V
IN
=6.5V,V
OUT
=5.0V
3
2
4
Output Current, I
OUT
(A)
5
Output Voltage v.s. Temperature
2.6
2.58
Output Voltage, V
OUT
(V)
2.56
2.54
2.52
2.5
2.48
2.46
2.44
2.42
2.4
-40 -20
0 20 40 60 80 100 120
Temperature (℃)
Io=5A
Io=10mA
V
IN
=4.5V,V
OUT
=2.5V
Quiescent Current, I
Q
(mA)
Quiescent Current v.s. Temperature
8
7
6
5
4
3
2
-40 -20
0
20 40 60 80 100 120
Temperature (℃)
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QW-R102-010,G
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