UNISONIC TECHNOLOGIES CO., LTD
UZ1085
3A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
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.
LINEAR INTEGRATED CIRCUIT
FEATURES
*Fast transient response
*Low dropout voltage at up to 3A
*Load regulation:0.05% typical
*Trimmed current limit
*On-chip thermal limiting
Lead-free:
UZ1085L-xx
Halogen-free: UZ1085G-xx
ORDERING INFORMATION
Normal
UZ1085-xx-TA3-T
UZ1085-xx-TN3-R
UZ1085-xx-TQ2-R
UZ1085-xx-TQ2-T
UZ1085-xx-TQ3-R
UZ1085-xx-TQ3-T
Ordering Number
Lead Free
Halogen Free
UZ1085L-xx-TA3-T UZ1085G-xx-TA3-T
UZ1085L-xx-TN3-R UZ1085G-xx-TN3-R
UZ1085L-xx-TQ2-R UZ1085G-xx-TQ2-R
UZ1085L-xx-TQ2-T UZ1085G-xx-TQ2-T
UZ1085L-xx-TQ3-R UZ1085G-xx-TQ3-R
UZ1085L-xx-TQ3-T UZ1085G-xx-TQ3-T
Package
TO-220
TO-252
TO-263
TO-263
TO-263-3
TO-263-3
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
Packing
Tube
Tape Reel
Tape Reel
Tube
Tape Reel
Tube
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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UZ1085
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
15 :1.5V
18 :1.8V
25 :2.5V
33 :3.3V
50 :5.0V
AD:ADJ
LINEAR INTEGRATED CIRCUIT
MARKING
TO-220
TO-252
TO-263
TO-263-3
LOT Code
Voltage Code
UTC
UZ1085
XX
1
2
3
L: Lead Free
G: Halogen Free
Date Code
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UZ1085
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
V
IN
LINEAR INTEGRATED CIRCUIT
RATINGS
UNIT
Input Voltage
18
V
(V
IN
- V
OUT
) ×I
OUT
See Figure 1
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
Junction to Ambient
TO-252
TO-220
TO-263
TO-252
TO-220
TO-263
SYMBOL
θ
JA
RATINGS
118
62
62
12
4
4
UNIT
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
Junction to Case
θ
JC
ELECTRICAL CHARACTERISTICS
(Ta=25°C, C
OUT
=22μF, unless otherwise specified.)
For UZ1085-ADJ (Adjustable)
PARAMETER
SYMBOL
Reference Voltage
Line Regulation
Load Regulation
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
Output Noise(% of V
OUT
)
Thermal Shutdown
V
REF
△V
OUT
△V
OUT
V
D
I
LIMIT
Iadj
△Iadj
I
O(MIN)
I
Q
RR
ΔV
OUT
ΔV
OUT
eN
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
Ta=25°C,30ms pulse
Ta=125°C, 1000hr
Ta=25°C,10Hz≤f≤10kHz
MIN.
1.225
TYP.
1.25
0.005
0.05
1.30
4
35
0.2
4
60
72
0.004
0.5
0.03
0.003
150
0.02
1.0
MAX.
1.275
0.2
0.5
1.40
120
5
10
13
UNIT
V
%
%
V
A
μA
μA
mA
mA
dB
%/W
%
%
%
°C
3.1
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UZ1085
ELECTRICAL CHARACTERISTICS
For UZ1085-xx (Fixed Voltage)
PARAMETER
SYMBOL
UZ1085-15
UZ1085-18
Output Voltage
V
OUT
UZ1085-25
UZ1085-33
UZ1085-50
△V
OUT
Line Regulation
△V
OUT
Load Regulation
Dropout Voltage
V
D
Current Limit
I
LIMIT
Minimum Load Current
I
O(MIN)
Quiescent Current
I
Q
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
Output Noise(% of V
OUT
)
Thermal shutdown
RR
LINEAR INTEGRATED CIRCUIT
△V
OUT
△V
OUT
eN
Ta=25°C,10Hz≤f≤10kHz
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
Ta=25°C,30ms pulse
Ta=125°C, 1000hr
MIN.
1.470
1.764
2.450
3.234
4.900
3.1
TYP.
1.5
1.8
2.5
3.3
5.0
0.005
0.05
1.30
4
4
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
13
mA
dB
0.02
1.0
%/W
%
%
%
°C
60
72
0.004
0.5
0.03
0.003
150
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UZ1085
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
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