TS317I
3-Terminal Adjustable Positive Voltage Regulator
TO-220
TO-263
2
(D PAK)
TO-252
(DPAK)
SOT-223
Pin Definition:
1. Adjustable
2. Output
3. Input
Heatsink is connected to Pin 2
General Description
The TS317 is adjustable 3-terminal positive voltage regulator capable of supplying in excess of 1.5A over an output
voltage range of 1.25 V to 37 V. This voltage regulator is exceptionally easy to use and require only two external
resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area
compensation, making it essentially blow-out proof.
The TS317 is offered in 3-pin TO-220, TO-263, TO-252 and SOT-223 package.
Features
●
●
Output Voltage Range 1.25 to 37V
Output current
- TO-220/TO-263 up to 1.5A
- TO-252/SOT-223 up to 500mA
●
●
●
●
●
●
Eliminates Stocking Many Fixed Voltages
Internal Thermal Overload Protection
Current Limit Constant with Temperature
Output transistor safe-area compensation
Output voltage offered in 4% tolerance
Floating Operation for High Voltage Applications
Standard Application Circuit
Ordering Information
Part No.
TS317IZ C0
TS317IM RN
TS317IP RO
TS317IW RP
Package
TO-220
TO-263
TO-252
SOT-223
Packing
50pcs / Tube
800pcs / 13” Reel
2.5Kpcs / 13” Reel
2.5Kpcs / 13” Reel
Cin is required if regulator is located an appreciable
distance from power supply filter.
Co is not needed for stability, however, it does improve
transient response.
Vout = 1.25 V(1 + R2 / R1 ) + I
Adj
R2
Since I
Adj
is controlled to less than 100
µA,
the error
associated with this term is negligible in most
applications
Absolute Maximum Rating
(Ta = 25
o
C unless otherwise noted)
Parameter
Input Voltage
Power Dissipation
Operating Junction Temperature
Storage Temperature Range
Symbol
V
IN
P
D
T
J
T
STG
Limit
40
Internal Limited
-40~+125
-65~+150
Unit
V
W
o
o
C
C
1/14
Version: A07
TS317I
3-Terminal Adjustable Positive Voltage Regulator
Electrical Characteristics
(V
I
-V
O
= 5.0 V, Io=500mA for TO-220/TO-263 packages, Io=200mA for TO-252/SOT-223 package;
Tj =T
LOW
to T
HIGH
see [Note 1]; Pmax per [Note 2]; unless otherwise specified.)
Parameter
Reference voltage, 3V
≤
Vi-Vo
≤
40V
10mA
≤
Io
≤
Imax, Pd
≤
Pmax,
Line regulation (Note 3)
Ta = 25 C, 3V≤Vi-Vo≤40V
Load regulation Ta = 25 C, 10mA
≤
I
O
≤
Imax (Note 3)
V
O
≤
5.0
V
O
≥
5.0
Thermal regulation, Ta = 25 C (Note 6), 20mS Pulse
Adjustment pin current
Adjustment pin current change, 3V
≤
V
I
- V
O
≤
40V
10mA
≤
Io
≤
Imax, Pd
≤
Pmax,
Maximum output current, V
I
- V
O
≤
15V, Pd
≤
Pmax
TO-220 / TO-263 Package
TO-252 / SOT-223 Package
Temperature stability (T
LOW
≤
Tj
≤
T
HIGH
)
Minimum load current to maintain regulation
(V
I
- V
O
= 40 V)
RMS Noise, % of V
O,
Ta =25 C, 10Hz
≤
f
≤
10KHz
Ripple Rejection, Vo =10V, f =120Hz (Note 4)
Without Cadj
Cadj = 10uF
Long-term stability (Note 5), Tj = T
HIGH
4
PSRR
--
66
65
80
--
--
dB
o
o
o
o
Figure
3
1
Symbol
Vref
REGline
Min.
1.20
--
Typ.
1.25
0.01
Max.
1.30
0.07
Unit
V
%/V
2
REGload
REGtherm
--
--
--
--
--
5.0
0.1
0.03
50
0.2
25
0.5
0.07
100
5.0
mV
%V
%Vo/W
uA
uA
3
1.2
Iadj
ΔIadj
Imax
T
S
ILmin
N
3
3
3
1.5
0.5
--
--
--
--
--
1
3.5
0.003
--
--
--
10
--
A
% Vo
mA
% Vo
3
S
--
0.3
1.0
%
o
Ta =25 C for endpoint measurements,1000hrs
Notes:
o
o
1. T
LOW
to T
HIGH
= 0 C to +125 C
2. Pmax is internally limited
3. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must
be taken into account separately. Pulse testing with low duty cycle is used.
4. Cadj, when used, is connected between the adjustment pin and ground.
5. Since Long-Term Stability cannot be measured on each device before shipment, this specification is an engineering
estimate of average stability from lot to lot.
6. Power dissipation within an IC voltage regulator produces a temperature gradient on the die, affecting individual IC
components on the die. These effects can be minimized by proper integrated circuit design and layout techniques.
Thermal Regulation in the effect of these temperature gradients on the output voltage and is expressed in the
percentage of output change per watt of power change in a specified time.
2/14
Version: A07
TS317I
3-Terminal Adjustable Positive Voltage Regulator
Functional Block Diagram
Test Circuit
Figure 1. Line Regulation Test Circuit
Figure 2. Load Regulation and
∆Iadj/Load
Test Circuit
Figure 3. Standard Test Circuit
Figure 4. Ripple Rejection Test Circuit
3/14
Version: A07
TS317I
3-Terminal Adjustable Positive Voltage Regulator
Electrical Characteristics Curve
Figure 5. Load Regulation
Figure 6. Current Limit
Figure 7. Adjustment Pin Current
Figure 8. Dropout Voltage
Figure 9. Temperature Stability
Figure 10. Minimum Operating Current
4/14
Version: A07
TS317I
3-Terminal Adjustable Positive Voltage Regulator
Electrical Characteristics Curve
Figure 11. Ripple Rejection vs. Output Voltage
Figure 12. Ripple Rejection vs. Output Current
Figure 13. Ripple Rejection vs. Frequency
Figure 14. Output Impedance
Figure 15. Line Transient Response
5/14
Figure 16. Load Transient Response
Version: A07
