Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UZ1086
LINEAR INTEGRATED CIRCUIT
1.5A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR REGULATOR

DESCRIPTION
The UTC UZ1086 and UZ1086-1.2V, 1.8V, 2.5V, 2.85V, 3.3V and
5V are low dropout three-terminal regulators with 1.5A output current
capability. These devices have been optimized for low voltage where
transient response and minimum input voltage are critical. The 2.85V
version is designed specifically to be used in Active Terminators for
SCSI bus.
Current limit is trimmed to ensure specified output current and
controlled short-circuit current. On-chip thermal limiting provides
protection against any combination of overload and ambient
temperatures that would create excessive junction temperatures.
Unlike PNP type regulators where up to 10% of the output current
is wasted as quiescent current, the quiescent current of the UZ1086
flows into the load, increasing efficiency.

FEATURES
* Low dropout voltage
* Load regulation: 0.05% typical
* Trimmed current limit
* On-chip thermal limiting
* Three-terminal adjustable or fixed 1.2V, 1.8V, 2.5V, 2.85V, 3.3V, 5V

ORDERING INFORMATION
Ordering Number
Package
Lead Free
Halogen-Free
UZ1086L-xx-AA3-R
UZ1086G-xx-AA3-R
SOT-223
UZ1086L-xx-TA3-T
UZ1086G-xx-TA3-T
TO-220
UZ1086L-xx-TN3-R
UZ1086G-xx-TN3-R
TO-252
UZ1086L-xx-TN3-T
UZ1086G-xx-TN3-T
TO-252
UZ1086L-xx-TQ2-R
UZ1086G-xx-TQ2-R
TO-263
UZ1086L-xx-TQ2-T
UZ1086G-xx-TQ2-T
TO-263
UZ1086L-xx-TQ3-R
UZ1086G-xx-TQ3-R
TO-263-3
UZ1086L-xx-TQ3-T
UZ1086G-xx-TQ3-T
TO-263-3
Note: 1. xx: Output Voltage, refer to Marking Information.
2. A: ADJ (for adjustable regulator), G: GND (for fixed regulator)
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Copyright © 2013 Unisonic Technologies Co., Ltd
Pin Assignment
1
2
3
A/G
O
I
A/G
O
I
A/G
O
I
A/G
O
I
A/G
O
I
A/G
O
I
A/G
O
I
A/G
O
I
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
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QW-R102-008. L
UZ1086

LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
TO-220
TO-252
TO-263
TO-263-3
VOLTAGE CODE
12
18
25
2J
33
50
AD
:1.2V
:1.8V
:2.5V
:2.85V
:3.3V
:5.0V
:ADJ
MARKING
LOT Code
Voltage Code
UTC
UZ1086
XX
1
2
L: Lead Free
G: Halogen Free
Date Code
3
SOT-223
UNISONIC TECHNOLOGIES CO., LTD
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QW-R102-008. L
UZ1086

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
7.5
V
Junction Temperature
TJ
+125
°C
Operating Temperature
TOPR
-40 ~ +85
°C
Storage Temperature
TSTG
-40 ~ +150
°C
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
Junction to Case

SYMBOL
TO-252
TO-220
TO-263
SOT-223
θJC
RATINGS
12
4
4
15
UNIT
°C/W
°C/W
°C/W
°C/W
ELECTRICAL CHARACTERISTICS (VIN≤7V, TJ=25°C, unless otherwise specified.)
For UZ1086-1.2V
PARAMETER
Output Voltage
Line Regulation (Note1,2)
Load Regulation (Note1,2)
Dropout Voltage
Current Limit
Adjust Pin Current
SYMBOL
VOUT
VOUT
VOUT
VD
ILIMIT
IADJ
Adjust Pin Current Change
IADJ
Minimum Load Current
Quiescent Current
IO(MIN)
IQ
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
Thermal shutdown
Thermal Shutdown Hysteresis
RR
VOUT
VOUT
VOUT
*
*
*
*
*
*
TEST CONDITIONS
10mA≤IOUT≤1A 2.8V≤VIN≤7V
(VOUT+1.6V) ≤VIN≤7V,IOUT=10mA
VIN-VOUT=2V, 10mA≤IOUT≤1A
IOUT=1.5A
VIN-VOUT=2V
1.6V≤ (VIN - VOUT ) ≤5.75V,
10mA≤IOUT≤1A
* 1.6V≤ (VIN -VOUT) ≤5.75V
* VIN =VOUT+1.25V
f=120Hz, COUT=22μF, Tantalum
VIN -VOUT=3V, IOUT=1.5A
TA=25°C, 30ms pulse
*
TA=125°C, 1000hrs
TA=25°C, 10Hz≤f≤10kHz
Junction Temperature
*
UNISONIC TECHNOLOGIES CO., LTD
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MIN. TYP. MAX. UNIT
1.176 1.2 1.224 V
0.005 0.2
%
0.05 0.5
%
1.4
1.6
V
1.6
2
A
35
120
μA
60
0.2
5
μA
4
10
13
mA
mA
72
dB
0.004 0.02 %/W
0.5
%
0.03 1.0
%
0.003
%
155
°C
10
°C
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UZ1086
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LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For Other Voltage
PARAMETER
Reference Voltage
UZ1086-1.8
UZ1086-2.5
Output Voltage
UZ1086-2.85
UZ1086-3.3
UZ1086-5.0
Line Regulation (Note1,2)
Load Regulation (Note1,2)
Dropout Voltage
Current Limit
Adjust Pin Current
SYMBOL
VREF
VOUT
VOUT
VOUT
VD
ILIMIT
IADJ
Adjust Pin Current Change
IADJ
Minimum Load Current
Quiescent Current
IO(MIN)
IQ
Ripple Rejection
RR
*
*
*
*
*
*
*
*
*
*
TEST CONDITIONS
1.5V≤ (VIN-VOUT ) ≤5.75V
10mA≤IOUT≤1A
3.3V≤VIN≤7V
4V≤VIN≤7V
10mA≤IOUT≤1A 4.35V≤VIN≤7V
4.8V≤VIN≤7V
6.5V≤VIN≤7V
(VOUT+1.5V) ≤VIN≤7V,IOUT=10mA
VIN-VOUT=2V, 10mA≤IOUT≤1A
IOUT=1.5A
VIN-VOUT=2V
1.5V≤ (VIN - VOUT ) ≤5.75V,
*
10mA≤IOUT≤1A
* 1.5V≤ (VIN -VOUT) ≤5.75V
* VIN =VOUT+1.25V
f=120Hz, COUT=22μF, Tantalum
VIN -VOUT=3V, IOUT=1.5A
TA=25°C, 30ms pulse
*
TA=125°C, 1000hrs
TA=25°C, 10Hz≤f≤10kHz
Junction Temperature
MIN. TYP. MAX. UNIT
1.225 1.25 1.275
V
1.764
2.450
2.793
3.234
4.900
1.6
60
1.80
2.50
2.85
3.30
5.00
0.005
0.05
1.30
2
35
1.836
2.550
2.907
3.366
5.100
0.2
0.5
1.50
120
V
V
V
V
V
%
%
V
A
μA
0.2
5
μA
4
10
13
mA
mA
72
dB
Thermal Regulation
0.004 0.02 %/W
Temperature Stability
VOUT
0.5
%
Long-Term Stability
VOUT
0.03 1.0
%
RMS Output Noise
VOUT
0.003
%
Thermal shutdown
155
°C
Thermal Shutdown Hysteresis
10
°C
Note: 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line
regulation are measured at a constant junction temperature by low duty cycle pulse testing.
2. Line and load regulation are guaranteed up to the maximum power dissipation. Power dissipation is
determined by input/output differential and the output current. Guaranteed maximum output power will not
be available over the full input/output voltage range.
* stand for specifications which apply over the designed operating temperature range.
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UZ1086

LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
VIN=3.3V
+
10μF
VIN
UZ1086
ADJ
VOUT=VREF(1+R2/R1)+IADJ*R2
VIN=5V
+
10μF
UZ1086-2.85
VIN
VOUT
GND
UNISONIC TECHNOLOGIES CO., LTD
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1.5V at 1.5A
+
22μF
VOUT
R1
124Ω
R2
24.9Ω
+
2.85V at 1.5A
22μF
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UZ1086
TYPICAL CHARACTERISTICS
Fig. 2 Load Regulation vs. Temperature
Fig. 1 Dropout Voltage vs. Output Current
1.5
0.1
1.3
1.2
Dropout Voltage Deviation(%)
Dropout Voltage (V)
1.4
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0
0
0.3
0.6
0.9
1.2
Output Current (A)
0.05
-0.05
-0.1
-0.15
-0.2
-75 -50 -25 0
1.5
Fig. 4 Output Voltage vs. Temperature
3.7
3.65
1.24
3.6
Reference Voltage(V)
Reference Voltage(V)
1.25
1.23
1.225
1.22
1.215
1.21
25 50 75 100 125150 175
Junction Temperature(°C)
1.245
1.235
I=1A
0
Fig. 3 Reference Voltage vs. Temperature
1.205
VOUT SET WITH 1% RESISTORS
VOUT =3.6V
3.55
3.5
3.45
3.4
3.35
VOUT =3.3V
3.3
3.25
1.2
-75 -50 -25 0
UZ1086 adjustable Only
3.2
-75 -50 -25 0 25 50 75 100 125150 175
25 50 75 100 125150 175
Junction Temperature(°C)
Junction Temperature(°C)
Fig. 5 Minimum Load Current vs. Temperature
Fig. 6 Adjust Pin Current vs. Temperature
5
100
Note1.UZ1086 Only
90
4
80
Adjust Pin Current (μA)
Minimum Load Current (mA)

LINEAR INTEGRATED CIRCUIT
3
2
1
70
60
50
40
30
20
10
0
-75 -50 -25 0
25 50 75 100 125 150 175
Junction Temperature(°C)
UNISONIC TECHNOLOGIES CO., LTD
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0
-75 -50 -25 0
25 50 75 100 125150 175
Junction Temperature(°C)
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UZ1086
TYPICAL CHARACTERISTICS(Cont.)
Ripple Rejection (dB)
Short- Circuit Current (A)

LINEAR INTEGRATED CIRCUIT
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.
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QW-R102-008. L
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