TS1085
3A Low Dropout Positive Voltage Regulator
TO-220
TO-263
2
(D PAK)
TO-252
(DPAK)
Pin Definition:
1. Fixed / Adj
2. Output
3. Input
Pin 2 connect to heat sink
General Description
TS1085 are high performance positive voltage regulators are designed for use in applications requiring low dropout
performance at full rated current, Additionally, TS1085 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. TS1085 are three terminal
regulators with fixed and adjustable voltage options available in popular packages.
Features
●
●
●
●
●
●
●
●
●
Low Dropout Performance 1.5V max.
Fill Current Rating Over Line and Temperature
Fast Transient Response
±2% Total Output Regulation Over Line, Load and
Temperature
Adjust Pin Current max 90uA Over Temperature
Line Regulation Typical 0.015%
Load Regulation Typical 0.05%
Fixed / Adjustable Output Voltage
TO-220, TO-263 and TO-252 Package
Ordering Information
Part No.
Package
Packing
TS1085CZxx C0
TO-220
50pcs / Tube
TS1085CMxx RN
TO-263
800pcs / 13” Reel
TS1085CPxx RO
TO-252
2.5Kpcs / 13” Reel
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.
Block Diagram
Typical Application Circuit
Fixed Output Voltage Version
V
OUT
= V
REF
(1+R2/R1) + I
adj
R2
Adjustable Output Voltage Version
1/8
Version: B07
TS1085
3A Low Dropout Positive Voltage Regulator
Absolute Maximum Rating
(Note 1)
Parameter
Input Supply Voltage
Operation Input Supply Voltage
Power Dissipation (Note 2)
Thermal Resistance
Junction to Ambient
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 C)
o
Symbol
V
IN
V
IN
(Opr. Typ.)
P
D
TO-220
TO-263
TO-252
T
J
T
STG
TO-220 / TO-263
TO-252
Ө
JA
Limit
15
12
Internal limited
80
85
105
0 ~+125
-65 ~ +150
10
5
Unit
V
V
o
C/W
o
o
C
C
S
Electrical Specification
(
Ta = 25
o
C, unless otherwise specified.)
Parameter
Reference Voltage
Output Voltage (Note 4)
Line Regulation
Load Regulation (Note 1,2)
Dropout Voltage
Quiescent Current
Adjustable Pin Current
Output Current Limit
Temperature Stability
Ripple Rejection
V
IN
- V
OUT
= 3V
Io=10mA,
F= 120Hz, Io= 1A, C
OUT
= 25uF,
Conditions
V
IN
= 2.75, Io=3A
V
IN
= 4V~7V, Io=3A
V
IN
= 4.8V~7V, Io=3A
V
IN
= 6.5V~7V, Io=3A
Vo+1.5V
≤
V
IN
≤
7V, Io= 10mA
V
IN
= V
OUT
+1.5V
Io= 10mA ~ 3A
Io=1A,
∆
V
OUT
= 1% V
OUT
V
IN
= 5V
Min
1.225
2.450
3.235
4.900
--
--
--
--
--
2.0
--
Typ
1.25
2.5
3.3
5.0
0.015
0.05
1.3
8
90
--
0.5
Max
1.275
2.550
3.366
5.100
0.2
1.0
1.5
10
--
--
--
Unit
V
V
V
V
%
%
V
mA
uA
A
%
--
60
70
dB
V
IN
= Vout+3V
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.
Note 4: The Output Capacitor does not have a theoretical upper limit and increasing its value will increase stability
C
OUT
=100uF or more is typical for high current regulator design.
2/8
Version: B07
TS1085
3A Low Dropout Positive Voltage Regulator
Electrical Characteristics Curve
Figure 1. Vdrop vs. Output Current
Figure 2. Reference Voltage vs. Temperature
Figure 3. Load Regulation vs. Output Current
Figure 4. Minimum Load Current
Figure 5. Iadj Pin vs. Temperature
3/8
Version: B07
TS1085
3A Low Dropout Positive Voltage Regulator
Application Information
FIGURE 6 – D PAK Thermal Resistance and Maximum Power
Dissipation vs. P.C.B Copper Length
2
Figure 7 – DPAK Thermal Resistance and Maximum Power
Dissipation vs. P.C.B Copper Length
4/8
Version: B07
TS1085
3A Low Dropout Positive Voltage Regulator
TO-220 Mechanical Drawing
DIM
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
TO-220 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
10.000
10.500
0.394
0.413
3.740
3.910
0.147
0.154
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
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
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
0.116
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
Marking Diagram
Y
M
= Year Code
= Month Code
(A=Jan,
B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
= Lot Code
= Voltage Code
(2.5=2.5V, 3.3=3.3V, 5.0=5V)
= Package Code for Adjustable type
(CZ = TO-220)
L
XX
5/8
Version: B07
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