Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UZ1084
5A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR REGULATOR

1
TO-220
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
1
TO-220F
1
FEATURES
*Fast transient response
*Low dropout Voltage at up to 5A
*Load regulation : 0.5% typical
*On-chip thermal limiting

1
TO-263-3
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

TO-252
1
TO-263
ORDERING INFORMATION
Ordering Number
Pin Assignment
Package
Lead Free
Halogen Free
1
2
3
UZ1084L-xx-TA3-T
UZ1084G-xx-TA3-T
TO-220
A/G
O
I
UZ1084L-xx-TF3-T
UZ1084G-xx-TF3-T
TO-220F
A/G
O
I
UZ1084L-xx-TN3-R
UZ1084G-xx-TN3-R
TO-252
A/G
O
I
UZ1084L-xx-TQ2-T
UZ1084G-xx-TQ2-T
TO-263
A/G
O
I
UZ1084L-xx-TQ2-R
UZ1084G-xx-TQ2-R
TO-263
A/G
O
I
UZ1084L-xx-TQ3-T
UZ1084G-xx-TQ3-T
TO-263-3
A/G
O
I
UZ1084L-xx-TQ3-R
UZ1084G-xx-TQ3-R
TO-263-3
A/G
O
I
Note: 1. xx: Output voltage, refer to Marking Information.
2. A: ADJ (for adjustable regulator), G: GND (for fixed regulator), O:VOUT, I:VIN
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
Packing
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
1 of 6
QW-R102-010.L
UZ1084

LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
TO-220
TO-220F
TO-252
TO-263
TO-263-3
15 :1.5V
18 :1.8V
25 :2.5V
33 :3.3V
50 :5.0V
AD:ADJ
MARKING
LOT Code
Voltage Code
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
UTC
UZ1084
XX
1
2
L: Lead Free
G: Halogen Free
Date Code
3
2 of 6
QW-R102-010.L
UZ1084

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°С, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
DC Input Voltage
VIN
15
V
Operating Temperature
TOPR
0 ~ +125
°С
Storage Temperature
TSTG
-65 ~ 150
°С
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

THERMAL DATA
PARAMETER
TO-252
Junction to Ambient
TO-220
TO-263/TO-263-3
TO-252
Junction to Case
TO-220
TO-263/TO-263-3

SYMBOL
θJA
θJC
RATINGS
112
54
64
12
4
4
UNIT
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
For UZ1084-Adjustable (Operating Conditions: 4.75≤VIN≤5.25, TJ =25°С unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Reference Voltage
VREF IOUT=10mA
1.23 1.25 1.27
V
Line Regulation
VOUT lOUT=10mA
0.5
2
%
Load Regulation
VOUT 10mA≤lOUT≤ 5A
0.5
2.5
%
Dropout Voltage
VD
△VREF%=2%, lo=5A
1.5
V
Current Limit
ILIMIT
(VIN-VOUT)=2V
5.5
6.5
A
Adjust Pin Current
IADJ
35
100
μA
Adjust Pin Current Change
∆IADJ 1.5V≤(VIN-VOUT)≤ 5.75V, 10mA≤lOUT≤5A
5
μA
Minimum Load Current
IO(MIN) 1.5V≤(VIN-VOUT)≤5.75V
5
10
mA
Thermal shutdown
150
°C
For UZ1084-xx (Fixed Voltage)
(Operating Conditions: 1.5V≤ (VIN-VOUT) ≤5.75V, TJ=25°С unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
1%
UZ1084-15 lOUT=10mA
2%
1%
UZ1084-18 lOUT=10mA
2%
1%
Output Voltage
VOUT
UZ1084-25 lOUT=10mA
2%
1%
UZ1084-33 lOUT=10mA
2%
1%
UZ1084-50 lOUT=10mA
2%
Line Regulation
VOUT IOUT=10mA
Load Regulation
VOUT 10mA≤lOUT≤5A
Dropout Voltage
VD
△VREF%=2%, lOUT=5A
Current Limit
ILIMIT
(VIN-VOUT)=2V
Minimum Load Current
∆IADJ 1.5V≤ (VIN-VOUT) ≤5.75V
Quiescent Current
IQ
VIN=12V
Thermal shutdown
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN. TYP MAX UNIT
1.485 1.5 1.515
V
1.470 1.5 1.530
V
1.782 1.8 1.818
V
1.764 1.8 1.836
V
2.475 2.5 2.525
V
2.450 2.5 2.550
V
3.267 3.3 3.333
V
3.234 3.3 3.366
V
4.950 5.0 5.050
V
4.900 5.0 5.100
V
0.5
2
%
0.5
2.5
%
1.5
V
5.5
6.5
A
5
10
mA
10
13
mA
150
C
3 of 6
QW-R102-010.L
UZ1084

LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUITS
Adjustable Voltage Regulator
UZ1084-ADJ
VOUT
VIN=12V
VOUT=2.5V
VIN
22μF
ADJ
+
VOUT=VREF(1+R2/R1)+IADJ*R2
+
R1
124Ω
22μF
R2
124Ω
Fixed Voltage Regulator
UZ1084-1.5
VIN
VIN=3.3V
+ 10µF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
VOUT
GND
+
VOUT=1.5 V
at 5A
22µF
4 of 6
QW-R102-010.L
UZ1084

LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Minimum Load Current v.s. Temperature
5
Minimum Load Current (mA)
Dropout Voltage, VD (V)
Dropout Voltage vs. Output Current
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
T=-25°С
T=25°С
T=125°С
4
3
2
1
0
1
2
3
4
Output Current, IOUT (A)
-40 -20
5
Short-Circuit Current v.s. Temperature
Adjust Pin Current v.s. Temperature
Adjust Pin Current (µA)
6
5
60
50
40
30
20
10
-40 -20
3.38
0
-40 -20
20 40 60 80 100 120
Temperature (°С)
Output Voltage v.s. Temperature
8
VOUT=3.3V
Quiescent Current, IQ (mA)
Short-Circuit Current (A)
7
3.40
Output Voltage, VOUT (V)
20 40 60 80 100 120
Temperature (°С)
70
8
4
0
3.36
3.34
3.32
3.30
3.28
3.26
3.24
0
20 40 60 80 100 120
Temperature (°С)
Quiescent Current v.s. Temperature
7
6
5
4
3
3.22
3.20
-40 -20
0
20 40 60 80 100 120
Temperature (°С)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2
-40 -20
0
20 40 60 80 100 120
Temperature (°С)
5 of 6
QW-R102-010.L
UZ1084
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)

1.270
Reference Voltage vs. Temperature
Load Regulation vs. Temperature
0.10
∆I=5A
Output Voltage Deviation(%)
Reference Voltage (V)
1.265
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.225
-40 -20
0
20 40 60 80 100 120
Temperature (°С)
0.05
0
-0.05
-0.10
-0.15
-0.20
-40 -20
0
20 40 60 80 100 120
Temperature (°С)
Ripple Rejection vs. Frequency
90
Ripple Rejections(dB)
80
70
60
50
40
30
20
VIN-VOUT=3V,
0.5<Vripple<2V
IOUT=0.1A
10
0
10
100
1K
10k
100k
Frequency(Hz)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 6
QW-R102-010.L
Similar pages