TS1085
3A Low Dropout Positive Voltage Regulator
TO-263
Low Dropout Voltage 1.3V max.
Pin assignment:
1. Ground / Adj
2. Output
3.
Input
General Description
The TS1085 Series are high performance positive voltage regulators are designed for use in applications requiring low
dropout performance at full rated current, additionally, the PJ1085 Series provides excellent regulation over variations due
to changes in line, load and temperature. Outstanding features include low dropout performance at rated current, fast
transient response, internal current limiting and thermal shutdown protection of the output device. The TS1085 Series are
three terminal regulators with fixed and adjustable voltage options available in popular packages.
This series is offered in 3-pin TO-263, TO-220 and TO-252 package.
Features
Low dropout performance 1.3V max.
Full current rating over line and temperature.
Fast transient response
±2%Total output regulation over line, load and
temperature
Adjust pin current max 90µA over temperature
Line regulation typical 0.015%.
Load regulation typical 0.05%.
Fixed/adjustable output voltage
TO-220, TO-263 and TO-252 package
Block Diagram
Ordering Information
Part No.
TS1085CZ-xx
TS1085CM-xx
-20 ~ +85
o
C
Operating Temp.
(Ambient)
TO-220
TO-263
Package
TO-252
TS1085CP-xx
Note: Where xx denotes voltage option, available are
5.0V, 3.3V and 2.5V. Leave blank for adjustable
version. Contact factory for additional voltage
options.
Absolute Maximum Rating
Input Supply Voltage
Operation Input Supply Voltage
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 C)
TO-220 / TO-263 Package
TO-252 Package
10
5
S
o
Vin
Vin (operate)
P
D
T
J
T
STG
12
7
Internally Limited
-25 ~ +150
-65 ~ +150
V
V
W
o
o
C
C
TS1085
1-6
2003/12 rev. A
Electrical Characteristics
Ta = 25
o
C, unless otherwise specified. Adjustable version test with Vout = 2.5V.
Parameter
Output Voltage
Conditions
Vout+1.5V
≤
Vin
≤
7V, Io=10mA
Vout+1.5V
≤
Vin
≤
7V, Io=3A
Min
0.990|Vo|
0.980|Vo|
0.990|Vo|
0.980|Vo|
--
Typ
5.0 / 3.3
2.5
1.25
Max
1.010|Vo|
1.020|Vo|
1.010|Vo|
1.020|Vo|
Unit
V
V
V
V
V
%
%
%
Reference Voltage
(Vin-out) =1.5V, Io=10mA
(Vin-out) =1.5V, Io=3A
Input Supply Voltage
Line Regulation
Load Regulation (note 1,2)
Vout+1.5V
≤
Vin
≤
7V, Io=10mA
Vin=Vout+1.5V,
10mA
≤
Io
≤
3A
Dropout Voltage
Minimum Load Current
Adjustable Pin Current
Current Limit
Temperature Stability
Ripple Rejection
Vin - Vout=3V
Io=10mA
F = 120Hz, Io=3A Cout=25uF,
Vin=Vout + 3V
Io=3A,
∆Vout=0.1%Vout
Vin=5V
--
0.015
0.05
7
0.2
1.0
--
--
--
--
--
3.5
--
--
1.3
8
90
--
0.5
60
1.4
10
--
--
--
70
V
mA
uA
A
%
dB
Thermal Performance
Condition
Thermal Resistance
Junction to Ambient
Package type
TO-220
TO-263
TO-252
Typ
45
45
80
Unit
o
C/W
Note 1: See thermal regulation specification for changes in output voltage due to heating effects. Line and load regulation
are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at
the output lead = 1/18” from the package.
Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is
determined by the input / output voltage difference and the output current. Guaranteed maximum power
dissipation will not be available over the full input / output voltage range.
Note 3: Quiescent current is defined as the minimum output current required to maintain the regulation.
TS1085
2-6
2003/12 rev. A
Typical Application Circuit
Fixed output voltage version
Vout = Vref * (1 + R2 / R1)
*
Cin is requested if regulator is located
Far from power supply filter
**
Design Cout as close to Vout pin as possible
Adjustable output voltage version
TS1085
3-6
2003/12 rev. A
Electrical Characteristics Curve
Figure 1: dropout voltage v.s. output current
Figure 2: load regulation v.s. temp.
Figure 3: output change v.s. temp.
Figure 4: line regulation
Figure 5: line transient response
Figure 6: load transient response
TS1085
4-6
2003/12 rev. A
TO-220 Mechanical Drawing
A
B
C
K
L
DIM
TO-220 DIMENSION
MILLIMETERS
MIN
MAX
10.000
3.240
2.440
-
0.381
2.345
4.690
12.700
8.382
14.224
3.556
0.508
27.700
2.032
0.255
5.842
10.500
4.440
2.940
6.350
1.106
2.715
5.430
14.732
9.017
16.510
4.826
1.397
29.620
2.921
0.610
6.858
INCHES
MIN
MAX
0.394
0.128
0.096
-
0.015
0.092
0.092
0.500
0.330
0.560
0.140
0.020
1.060
0.080
0.010
0.230
0.413
0.175
0.116
0.250
0.040
0.058
0.107
0.581
0.355
0.650
0.190
0.055
1.230
0.115
0.024
0.270
P
A
B
C
D
J
I
M
E
F
G
H
I
J
K
L
M
N
D
H
F
G
E
O
N
O
P
TO-263 Mechanical Drawing
A
TO-263 DIMENSION
E
F
DIM
A
B
C
MILLIMETERS
MIN
MAX
10.000
14.605
0.508
2.420
4.064
1.118
0.450
8.280
1.140
1.480
10.500
15.875
0.991
2.660
4.830
1.400
0.730
8.800
1.400
1.520
INCHES
MIN
MAX
0.394
0.575
0.020
0.095
0.160
0.045
0.018
0.325
0.044
0.058
0.413
0.625
0.039
0.105
0.190
0.055
0.029
0.346
0.055
0.060
B
I
H
D
E
F
G
H
I
C
D
G
J
TS1085
5-6
2003/12 rev. A
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