TS317
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.
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.
TS317CZ C0
TS317CM RN
TS317CP RO
TS317CW 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
0~+125
-65~+150
Unit
V
W
o
o
C
C
1/14
Version: D07
TS317
3-Terminal Adjustable Positive Voltage Regulator
Thermal Performance
Condition
Thermal Resistance Junction to Air
Package type
TO-220
TO-263
TO-252
SOT-223
TO-220
TO-263
TO-252
SOT-223
Symbol
Typ
50
55
100
130
5
5
10
15
Unit
o
RΘ
JA
C/W
Thermal Resistance Junction to Case
RΘ
JC
o
C/W
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)
Parameter
Figure
Symbol
Min.
Typ.
Max.
Unit
Reference voltage, 3V
≤
Vi-Vo
≤
40V
3
Vref
1.20
1.25
1.30
V
10mA
≤
Io
≤
Imax, Pd
≤
Pmax,
Line regulation (Note 3)
1
REGline
--
0.01
0.07
%/V
o
Ta = 25 C, 3V≤Vi-Vo≤40V
o
Load regulation Ta = 25 C, 10mA
≤
I
O
≤
Imax (Note 2)
V
O
≤
5.0
2
REGload
--
5.0
25
mV
V
O
≥
5.0
--
0.1
0.5
%V
o
Thermal regulation, Ta = 25 C (Note 5), 20mS Pulse
REGtherm
--
0.03
0.07
%Vo/W
Adjustment pin current
3
Iadj
--
50
100
uA
Adjustment pin current change, 3V
≤
V
I
- V
O
≤
40V
1.2
--
0.2
5.0
uA
10mA
≤
Io
≤
Imax, Pd
≤
Pmax,
∆Iadj
Maximum output current, V
I
- V
O
≤
15V, Pd
≤
Pmax
TO-220 / TO-263 Package
3
Imax
1.5
--
--
A
TO-252 / SOT-223 Package
0.5
--
--
Temperature stability (T
LOW
≤
Tj
≤
T
HIGH
)
3
T
S
--
1
--
% Vo
Minimum load current to maintain regulation
3
ILmin
--
3.5
10
mA
(V
I
- V
O
= 40 V)
RMS Noise, % of V
O,
Ta =25
o
C, 10Hz
≤
f
≤
10KHz
N
--
0.003
--
% Vo
Ripple Rejection, Vo =10V, f =120Hz (Note 3)
Without Cadj
4
PSRR
--
65
--
dB
Cadj = 10uF
66
80
--
Long-term stability (Note 4), Tj = 125ºC, 1000hrs
3
S
--
0.3
1.0
%
o
o
Notes: 1. T
LOW
to T
HIGH
= 0 C to +125 C, Pmax is internally limited
2. 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.
3. Cadj, when used, is connected between the adjustment pin and ground. 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.
4. 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: D07
TS317
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: D07
TS317
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: D07
TS317
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: D07
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