UNISONIC TECHNOLOGIES CO., LTD
UZ1085
3A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
1
LINEAR INTEGRATED CIRCUIT
1
TO-220
The UTC
UZ1085-xx
series are low dropout three-terminal
regulators with 3A 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.
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
temperature that would create excessive junction temperatures.
TO-220F
1
TO-252
FEATURES
1
*Fast transient response
*Low dropout voltage at up to 3A
*Load regulation:0.05% typical
*Trimmed current limit
*On-chip thermal limiting
TO-263-3
1
TO-263
ORDERING INFORMATION
Packing
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Ordering Number
Pin Assignment
Package
Lead Free
Halogen Free
1
2
3
UZ1085L-xx-TA3-T
UZ1085G-xx-TA3-T
TO-220
A/G
O
I
UZ1085L-xx-TF3-T
UZ1085G-xx-TF3-T
TO-220F
A/G
O
I
UZ1085L-xx-TN3-R
UZ1085G-xx-TN3-R
TO-252
A/G
O
I
UZ1085L-xx-TQ2-T
UZ1085G-xx-TQ2-T
TO-263
A/G
O
I
UZ1085L-xx-TQ2-R
UZ1085G-xx-TQ2-R
TO-263
A/G
O
I
UZ1085L-xx-TQ3-T
UZ1085G-xx-TQ3-T
TO-263-3
A/G
O
I
UZ1085L-xx-TQ3-R
UZ1085G-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: V
OUT
, I: V
IN
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QW-R102-013.I
UZ1085
MARKING INFORMATION
PACKAGE
TO-220
TO-220F
TO-252
TO-263
TO-263-3
VOLTAGE CODE
15 :1.5V
18 :1.8V
25 :2.5V
33 :3.3V
50 :5.0V
AD:ADJ
LINEAR INTEGRATED CIRCUIT
MARKING
UTC
UZ1085
XX
1
L: Lead Free
G: Halogen Free
Date Code
Lot Code
Voltage Code
BLOCK DIAGRAM
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QW-R102-013.I
UZ1085
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
18
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
SYMBOL
θ
JA
RATINGS
118
62
12
θ
JC
4
7.6
°C/W
UNIT
°C/W
PARAMETER
TO-252
Junction to Ambient
TO-220/TO-220F
TO-263/ TO-263-3
TO-252
TO-220/TO-263
Junction to Case
TO-263-3
TO-220F
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, C
OUT
=22μF, unless otherwise specified.)
TEST CONDITIONS
1.5V≤(V
IN
- V
OUT
)
≤8.25V,10mA≤I
OUT
≤3A
(V
OUT
+1.5V)
≤V
IN
≤12V,
I
OUT
=10mA
(V
IN
- V
OUT
)=3V, 10mA≤I
OUT
≤3A
△
V
REF
%=1%, l
OUT
=3A
(V
IN
-V
OUT
)=2V
1.5V≤ (V
IN
- V
OUT
)
≤12V,
10mA≤I
OUT
≤3A
1.5V≤ (V
IN
-V
OUT
)
≤12V
V
IN
=12V
f=120Hz,Tantalum,(V
IN
–V
OUT
)=3V I
OUT
=3A
T
A
=25°C,30ms pulse
T
A
=125°C, 1000hr
T
A
=25°C,10Hz≤f≤10kHz
MIN
1.225
TYP MAX
1.25 1.275
0.005
0.2
0.05
0.5
1.30
1.40
4
35
120
0.2
5
10
4
13
72
0.004 0.02
0.5
0.03
1.0
0.003
150
UNIT
V
%
%
V
A
μA
μA
mA
mA
dB
%/W
%
%
%
°C
For UZ1085-ADJ (Adjustable)
PARAMETER
SYMBOL
Reference Voltage
V
REF
Line Regulation
△
V
OUT
Load Regulation
△
V
OUT
Dropout Voltage
V
D
Current Limit
I
LIMIT
Adjust Pin Current
I
ADJ
Adjust Pin Current Change
△
I
ADJ
Minimum Load Current
I
O(MIN)
Quiescent Current
I
Q
Ripple Rejection
RR
Thermal Regulation
Temperature Stability
V
OUT
Long-Term Stability
V
OUT
Output Noise(% of V
OUT
)
eN
Thermal Shutdown
3.1
60
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QW-R102-013.I
UZ1085
For UZ1085-xx (Fixed Voltage)
PARAMETER
SYMBOL
UZ1085-15
UZ1085-18
Output Voltage UZ1085-25
V
OUT
UZ1085-33
UZ1085-50
Line Regulation
△
V
OUT
Load Regulation
△
V
OUT
Dropout Voltage
V
D
Current Limit
I
LIMIT
Minimum Load Current
I
O(MIN)
Quiescent Current
I
Q
Ripple Rejection
RR
Thermal Regulation
Temperature Stability
△
V
OUT
Long-Term Stability
△
V
OUT
Output Noise(% of V
OUT
)
eN
Thermal shutdown
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, C
OUT
=22μF, unless otherwise specified.)
TEST CONDITIONS
3.0V≤V
IN
≤8.5V,
10mA≤I
OUT
≤3A
3.3V≤V
IN
≤8.8V,
10mA≤I
OUT
≤3A
4.0V≤V
IN
≤9.5V,
10mA≤I
OUT
≤3A
4.8V≤V
IN
≤10.3V,
10mA≤I
OUT
≤3A
6.5V≤V
IN
≤12V,
10mA≤I
OUT
≤3A
(V
OUT
+1.5V)
≤V
IN
≤12V,I
OUT
=10mA
(V
IN
– V
OUT
)=3V, 10mA
≦
I
OUT
≤3A
△
V
REF
%=1%, l
OUT
=3A
(V
IN
-V
OUT
)=2V
1.5V≤ (V
IN
-V
OUT
)
≤12V
V
IN
=12V
f=120Hz, Tantalum, (V
IN
-V
OUT
)=3V,I
OUT
=3A
T
A
=25°C,30ms pulse
T
A
=125°C, 1000hr
T
A
=25°C,10Hz≤f≤10kHz
MIN
1.470
1.764
2.450
3.234
4.900
MAX UNIT
1.530
V
1.830
V
2.550
V
3.366
V
5.100
V
0.2
%
0.5
%
1.40
V
A
10
mA
4
13
mA
72
dB
0.004 0.02 %/W
0.5
%
0.03
1.0
%
0.003
%
150
°C
TYP
1.5
1.8
2.5
3.3
5.0
0.005
0.05
1.30
4
3.1
60
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QW-R102-013.I
UZ1085
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
V
IN
=9V
22μF
+
UZ1085-3.3
V
OUT
V
IN
GND
+
22μF
3.3V at 3A
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QW-R102-013.I
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