UNISONIC TECHNOLOGIES CO., LTD
UZ2085
LINEAR INTEGRATED CIRCUIT
3A ADJUSTABLE/FIXED LOW
DROPOUT LINEAR REGULATOR
„
DESCRIPTION
1
The UTC UZ2085-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 in
which 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 limitation provides
protection against any combination of overload and ambient
temperature that would create excessive junction temperature.
„
TO-252
FEATURES
* Fast transient response
* Low dropout voltage at up to 3A
* Load regulation: 0.05% typical
* Trimmed current limit
* On-chip thermal limiting
* Ultra low current consumption (0.35mA typ.)
* Ultra low Adjustment Current (7μA typ.)
* Ultra low minimum Load (0.3mA typ.)
* Stable with low ESR ceramic output capacitor (MLCC)
„
ORDERING INFORMATION
Ordering Number
Pin Assignment
Package
Lead Free
Halogen Free
1
2
3
UZ2085L-xx-TN3-R
UZ2085G-xx-TN3-R
TO-252
A/G
O
I
UZ2085L-xx-TN3-T
UZ2085G-xx-TN3-T
TO-252
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
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Copyright © 2012 Unisonic Technologies Co., Ltd
Packing
Tape Reel
Tube
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QW-R102-043.G
UZ2085
„
„
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
TO-252
50:5.0V
AD:ADJ
MARKING
BLOCK DIAGRAM
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LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
18
V
Power Dissipation
PD
Internally Limited
W
Junction Temperature
TJ
+150
°C
Operating Temperature
TOPR
-20 ~ +85
°C
Storage Temperature
TSTG
-40 ~ +150
°C
Note:1 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
Junction to Case
„
SYMBOL
θJA
θJC
RATINGS
118
12
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS (TA=25°C, COUT=22μF, unless otherwise specified.)
For UZ2085-ADJ (Adjustable)
PARAMETER
SYMBOL
Reference Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
Ripple Rejection
Thermal Regulation
Temperature Stability
Long-Term Stability
Output Noise(% of VOUT)
Thermal Shutdown
VREF
ΔVOUT
ΔVOUT
VD
ILIMIT
IADJ
ΔIADJ
IO(MIN)
RR
ΔVOUT
ΔVOUT
eN
For UZ2085-xx (Fixed Voltage)
PARAMETER
SYMBOL
Output Voltage
UZ2085-50
VOUT
Line Regulation
ΔVOUT
Load Regulation
ΔVOUT
Dropout Voltage
VD
Current Limit
ILIMIT
Minimum Load Current
IO(MIN)
Quiescent Current
IQ
Ripple Rejection
RR
Thermal Regulation
Temperature Stability
ΔVOUT
Long-Term Stability
ΔVOUT
Output Noise(% of VOUT)
eN
Thermal shutdown
TEST CONDITIONS
1.5V≤(VIN - VOUT) ≤8.25V
10mA≤IOUT≤3A
(VOUT +1.5V)≤ VIN ≤12V, IOUT=10mA
(VIN -VOUT)=3V, 10mA ≤ IOUT ≤3A
ΔVREF%=1%, lOUT=3A
(VIN-VOUT)=2V
(VOUT +1.5V)≤VIN≤12V, 10mA ≤ IOUT ≤3A
(VOUT +1.5V) ≤ VIN ≤ 12V
f=120Hz,Tantalum,(VIN-VOUT)=3V IOUT=3A
TA=25°C,30ms pulse
TYP.
MAX.
UNIT
1.225
1.25
1.275
V
0.2
0.5
1.40
3.1
0.005
0.05
1.2
5.8
7
0.3
0.3
0.004
0.5
0.03
0.003
150
0.02
%
%
V
A
μA
μA
mA
dB
%/W
%
%
%
°C
TYP.
5.0
0.005
0.05
1.2
5.8
MAX.
5.1
0.2
0.5
1.40
TEST CONDITIONS
MIN.
6.5V≤ VIN ≤12V, 10mA≤ IOUT ≤3A
4.9
(VOUT +1.5V)≤VIN ≤12V, IOUT=10mA
(VIN -VOUT)=3V, 10Ma ≤ IOUT ≤ 3A
ΔVREF%=1%, lOUT=3A
(VIN-VOUT)=2V
3.1
(VOUT +1.5V) ≤ VIN ≤12V
VIN=12V
f=120Hz, Tantalum,(VIN -VOUT)=3V,IOUT=3A 75
TA=25°C,30ms pulse
TA=125°C, 1000hr
TA=25°C,10Hz ≤ f ≤ 10kHz
10
2
1
75
TA =125°C, 1000hr
TA =25°C,10Hz ≤ f ≤10kHz
UNISONIC TECHNOLOGIES CO., LTD
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MIN.
0.35
0.004
0.5
0.03
0.003
150
1.0
1
0.5
0.02
1.0
UNIT
V
%
%
V
A
mA
mA
dB
%/W
%
%
%
°C
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LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
The UTC UZ2085 also supports MLCC.
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LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
Adjust Pin Current (µA)
Minmum Load Current (mA)
„
Short-Circuit Current vs. △V
Ripple Rejection vs. Frequency
90
7
T=25℃
6
80
70
5
60
4
50
3
40
30
2
20
1
1
2
3
4
△V
5
6
7
0
10
8
100
10k
1k
Frequency (Hz)
100k
Dropout Voltage (V)
0
Power (W)
0
10
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TYPICAL CHARACTERISTICS(Cont.)
„
Short-Circuit Current vs. Temperature
Output Voltage vs. Output Current
8
UTC UZ2085-ADJ
VOUT=3.3V
4
Short-Circuit Current (A)
Output Voltage (V)
5
3
-40℃
2
125℃
1
0
25℃
0
1
2
3
4
5
6
Output Current (A)
7
7
6
5
4
-50
8
Reference Voltage vs. Temperature
Output Voltage vs. Temperature
1.254
5.10
Output Voltage (V)
1.252
Reference Voltage (V)
-25
0 25
50 75 100 125
Junction Temperature (℃)
1.250
1.248
1.246
1.244
5.05
UTC UZ2085-5.0
5.00
4.95
4.90
1.242
0
25
50
75 100
Junction Temperature (℃)
125
4.85
-25
0
25
50
75
100 125
Junction Temperature (℃)
Output Voltage Deviation (%)
1.240
-25
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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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