UNISONIC TECHNOLOGIES CO., LTD
UZ1086
1.5A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR REGULATOR
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
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
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
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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UZ1086
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
TO-220
TO-252
TO-263
TO-263-3
12
18
25
2J
33
50
AD
:1.2V
:1.8V
:2.5V
:2.85V
:3.3V
:5.0V
:ADJ
LOT Code
Voltage Code
UTC
UZ1086
XX
1
2
3
L: Lead Free
G: Halogen Free
Date Code
SOT-223
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UZ1086
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
7.5
V
Junction Temperature
T
J
+125
°C
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-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
SYMBOL
TO-252
TO-220
TO-263
SOT-223
θ
JC
RATINGS
12
4
4
15
UNIT
°C/W
°C/W
°C/W
°C/W
Junction to Case
ELECTRICAL CHARACTERISTICS
(V
IN
≤7V,
T
J
=25°C, unless otherwise specified.)
SYMBOL
V
OUT
V
OUT
V
OUT
V
D
I
LIMIT
I
ADJ
I
ADJ
I
O(MIN)
I
Q
RR
V
OUT
V
OUT
V
OUT
TEST CONDITIONS
10mA≤I
OUT
≤1A
2.8V≤V
IN
≤7V
(V
OUT
+1.6V)
≤V
IN
≤7V,I
OUT
=10mA
V
IN
-V
OUT
=2V, 10mA≤I
OUT
≤1A
I
OUT
=1.5A
V
IN
-V
OUT
=2V
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
0.2
4
60
72
5
10
13
μA
mA
mA
dB
For UZ1086-1.2V
PARAMETER
Output Voltage
Line Regulation (Note1,2)
Load Regulation (Note1,2)
Dropout Voltage
Current Limit
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
Quiescent Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
Thermal shutdown
Thermal Shutdown Hysteresis
*
*
*
*
*
*
*
1.6V≤ (V
IN
- V
OUT
)
≤5.75V,
10mA≤I
OUT
≤1A
* 1.6V≤ (V
IN
-V
OUT
)
≤5.75V
* V
IN
=V
OUT
+1.25V
f=120Hz, C
OUT
=22μF, Tantalum
V
IN
-V
OUT
=3V, I
OUT
=1.5A
T
A
=25°C, 30ms pulse
*
T
A
=125°C, 1000hrs
T
A
=25°C, 10Hz≤f≤10kHz
Junction Temperature
0.004 0.02 %/W
0.5
%
0.03 1.0
%
0.003
%
155
°C
10
°C
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UZ1086
ELECTRICAL CHARACTERISTICS(Cont.)
SYMBOL
V
REF
*
*
*
*
*
*
*
*
*
*
*
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
Adjust Pin Current Change
Minimum Load Current
Quiescent Current
Ripple Rejection
LINEAR INTEGRATED CIRCUIT
V
OUT
V
OUT
V
OUT
V
D
I
LIMIT
I
ADJ
I
ADJ
I
O(MIN)
I
Q
RR
TEST CONDITIONS
1.5V≤ (V
IN
-V
OUT
)
≤5.75V
10mA≤I
OUT
≤1A
3.3V≤V
IN
≤7V
4V≤V
IN
≤7V
10mA≤I
OUT
≤1A
4.35V≤V
IN
≤7V
4.8V≤V
IN
≤7V
6.5V≤V
IN
≤7V
(V
OUT
+1.5V)
≤V
IN
≤7V,I
OUT
=10mA
V
IN
-V
OUT
=2V, 10mA≤I
OUT
≤1A
I
OUT
=1.5A
V
IN
-V
OUT
=2V
MIN. TYP. MAX. UNIT
1.225 1.25 1.275
1.764
2.450
2.793
3.234
4.900
1.80
2.50
2.85
3.30
5.00
0.005
0.05
1.30
2
35
0.2
4
60
72
1.836
2.550
2.907
3.366
5.100
0.2
0.5
1.50
120
5
10
13
V
V
V
V
V
V
%
%
V
A
μA
μA
mA
mA
dB
1.6
Thermal Regulation
0.004 0.02 %/W
Temperature Stability
V
OUT
0.5
%
Long-Term Stability
V
OUT
0.03 1.0
%
RMS Output Noise
V
OUT
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.
1.5V≤ (V
IN
- V
OUT
)
≤5.75V,
10mA≤I
OUT
≤1A
* 1.5V≤ (V
IN
-V
OUT
)
≤5.75V
* V
IN
=V
OUT
+1.25V
f=120Hz, C
OUT
=22μF, Tantalum
V
IN
-V
OUT
=3V, I
OUT
=1.5A
T
A
=25°C, 30ms pulse
*
T
A
=125°C, 1000hrs
T
A
=25°C, 10Hz≤f≤10kHz
Junction Temperature
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QW-R102-008. L
UZ1086
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
V
IN
=3.3V
+
10μF
V
IN
UZ1086
ADJ
V
OUT
R1
124Ω
1.5V at 1.5A
+
22μF
V
OUT
=V
REF
(1+R2/R1)+I
ADJ
*R2
R2
24.9Ω
V
IN
=5V
+
10μF
UZ1086-2.85
V
IN
V
OUT
GND
+
2.85V at 1.5A
22μF
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QW-R102-008. L
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