UTC UZ1084
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-010,B
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 V
TT
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.
FEATURE
*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 VCC 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: ADJ/GND 2: V
OUT
3: V
IN
TYPICAL APPLICATION CIRCUIT
Adjustable Voltage Regulator
+
+
ADJ
V
IN
V
OUT
UZ1084-ADJ
V
IN
=5V
V
OUT
=2.5V
at 5A
10F
22F
124
124
UTC UZ1084
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-010,B
+
+
GND
V
IN
V
OUT
UZ1084-1.5
V
IN
=3.3V
V
OUT
=1.5 V
at 5A
10F
22F
Fixed Voltage Regulator
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL
MAX
UNIT
Input Supply Voltage
V
IN
15 V
Operating Junction Temperature Range
T
J
0 ~ 125
C
Storage Temperature Range
T
STG
-65 ~ 150
C
Lead Temperature (soldering, 10 seconds)
T
LEAD
300
C
UTC UZ1084-ADJ(ADJUSTABLE) ELECTRICAL CHARACTERISTICS
(Operating Conditions : 4.75V
IN
5.25,Tj=25 unless otherwise specified)
PARAMETER CONDITIONS
MIN.
TYP.
MAX.
UNIT
Reference Voltage
l
O=
10mA
1.23 1.25 1.27 V
Line Regulation
l
O=
10mA
0.5
2
%
Load Regulation
10mAl
O
5A
0.5
2.5
%
Dropout Voltage
V
REF
%=2%,l
O=
5A
1.5
V
Current Limit
(V
IN
-V
OUT
)=2V 5.5
6.5
A
Adjust Pin Current
35
100
A
Minimum Load Current
1.5V(V
IN
-V
OUT
)5.75V
5
10
mA
Thermal Resistance, Junction to Case
3
C/W
Thermal
shutdown
150
C
UTC UZ1084
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-010,B
UTC UZ1084-X.X(FIXED VOLTAGE) ELECTRICAL CHARACTERISTICS
(Operating Conditions : 1.5V(V
IN
-V
OUT
)5.75V,Tj=25 unless otherwise specified)
PARAMETER CONDITIONS
MIN.
TYP.
MAX.
UNIT
l
O=
10mA 1%
2%
1.485
1.470
1.5
1.5
1.515
1.530
l
O=
10mA 1%
2%
1.782
1.764
1.8
1.8
1.818
1.836
l
O=
10mA 1%
2%
2.475
2.450
2.5
2.5
2.525
2.550
l
O=
10mA 1%
2%
3.267
3.234
3.3
3.3
3.333
3.366
Output Voltage
l
O=
10mA 1%
2%
4.950
4.900
5.0
5.0
5.050
5.100
V
Line Regulation
l
O=
10mA
0.5
2
%
Load Regulation
10mAl
O
5A
0.5
2.5
%
Dropout Voltage
Vref%=2%,l
O=
5A
1.5
V
Current Limit
(V
IN
-V
OUT
)=2V 5.5
6.5
A
Minimum Load Current
1.5V(V
IN
-V
OUT
)5.75V
5
10
mA
Quiescent Current
V
IN
=12V
10
13
mA
Thermal Resistance, Junction to Case
3
C/W
Thermal
shutdown
150
C
UTC UZ1084
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-010,B
TYPICAL PERFORMANCE CHARACTERISTICS
1.95
1.5
Output Current, Io (A)
0
O
u
tput Vol
t
age,
V
o
(
V
)
1.9
1.85
1
3
Load Regulation
1.8
1.75
1.7
1.65
1.6
1.55
2
4
5
V
IN
=3.3V,V
OUT
=1.8V
2
2.58
2.4
Output Current, Io (A)
0
Output
Vol
t
age, V
o
(
V
)
2.56
2.54
1
3
Load Regulation
2.52
2.5
2.48
2.46
2.44
2.42
2
4
5
V
IN
=4,V
OUT
=2.5V
2.6
3.45
3
Output Current, Io (A)
0
O
u
tput Voltage,
Vo (
V
)
3.4
3.35
1
3
Load Regulation
3.3
3.25
3.2
3.15
3.1
3.05
2
4
5
V
IN
=4.8V,V
OUT
=3.3V
3.5
Load Regulation
5.15
4.7
Output Current, Io (A)
0
Output
Vol
t
age, V
o
(
V
)
5.1
5.05
1
3
5
4.95
4.9
4.85
4.8
4.75
2
4
5
V
IN
=6.5V,V
OUT
=5.0V
5.2
Temperature ()
Qui
e
scent Cur
r
ent,
I
Q
(m
A)
0
40
20
60 80
2
4
3
-40 -20
100 120
Quiescent Current v.s.
Temperature
5
6
7
8
Temperature ()
Output V
o
ltage,
Vo
(
V
)
0
40
Output Voltage v.s. Temperature
20
60 80
2.58
2.4
2.56
2.54
2.52
2.5
2.48
2.46
2.44
2.42
2.6
-40 -20
100 120
V
IN
=4.5V,V
OUT
=2.5V
Io=10mA
Io=5A
UTC UZ1084
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R102-010,B
20
10
15
5
0
25
45
65
85
105
125
POWER (W)
CASE TEMPERATURE
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