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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.
Operating Temp. Package
(Ambient)
TS1085CZ-xx
TS1085CM-xx
-20 ~ +85 oC
TO-220
TO-263
TS1085CP-xx
TO-252
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
Vin
Operation Input Supply Voltage
Vin (operate)
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 oC)
TO-220 / TO-263 Package
TO-252 Package
PD
TJ
TSTG
TS1085
1-6
12
7
Internally Limited
-25 ~ +150
-65 ~ +150
10
5
V
V
W
oC
oC
S
2003/12 rev. A
www.DataSheet4U.com
Electrical Characteristics
Ta = 25 oC, unless otherwise specified. Adjustable version test with Vout = 2.5V.
Parameter
Conditions
Min
Output Voltage
Vout+1.5V ≤ Vin ≤ 7V, Io=10mA 0.990|Vo|
Vout+1.5V ≤ Vin ≤ 7V, Io=3A
0.980|Vo|
Reference Voltage
(Vin-out) =1.5V, Io=10mA
0.990|Vo|
(Vin-out) =1.5V, Io=3A
0.980|Vo|
Input Supply Voltage
--
Line Regulation
Vout+1.5V ≤ Vin ≤ 7V, Io=10mA
--
Load Regulation (note 1,2)
Vin=Vout+1.5V,
--
10mA ≤ Io ≤ 3A
Dropout Voltage
Io=3A, ∆Vout=0.1%Vout
--
Minimum Load Current
Vin=5V
--
Adjustable Pin Current
--
Current Limit
Vin - Vout=3V
3.5
Temperature Stability
Io=10mA
--
Ripple Rejection
F = 120Hz, Io=3A Cout=25uF,
--
Vin=Vout + 3V
Typ
5.0 / 3.3
2.5
1.25
--
0.015
0.05
1.3
8
90
--
0.5
60
Max
1.010|Vo|
1.020|Vo|
1.010|Vo|
1.020|Vo|
7
0.2
1.0
1.4
10
--
--
--
70
Unit
V
V
V
V
V
%
%
%
V
mA
uA
A
%
dB
Thermal Performance
Condition
Thermal Resistance
Junction to Ambient
Package type
TO-220
TO-263
TO-252
Typ Unit
45
45 oC/W
80
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
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