TSC TS317 Technical data
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TS317
3-Terminal Adjustable Output Positive Voltage Regulator
TO-263
Pin assignment:
1. Adjustable
2. Output
3. Input
(Heatsink surface connected to pin 2)
Output Voltage Range From
1.25V to 37V
Output Current up to 1.5A
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
Standard Application
Output current up to 1.5A
* TO-220/TO-263 for 1.5A
* TO-252/SOT-223 for 500mA
Output Adjustable between 1.25 V and 37 V
Internal Thermal Overload Protection
Internal Short-Circuit Current Limiting Constant with
Temperature
Output Transistor Safe-Area Compensation
Floating Operation for High Voltage Applications
Eliminates Stocking Many Fixed Voltages
Output voltage offered in 4% tolerance
Ordering Information
Part No. Operating Temp. Package
TS317CZ TO-220
TS317CM TO-263
TS317CP TO-252
TS317CW
-20 ~ +150oC
SOT-223
Vout = 1.25 V * (1 + R2 / R1 ) + Iadjj * R2
Since I
associated with this term is negligible in most applications
A common ground is required between the input and the
output voltages. The input voltage must remain typically
2.0V above the output voltage even during the low point
on the Input ripple voltage.
** = Co is not needed for stability; however, it does
is controlled to less than 100 µA, the error
Adj
* = Cin is required if regulator is located an appreciable
distance from power supply filter.
improve transient response.
TS317 1-8 2003/12 rev. D
Absolute Maximum Rating
Input Voltage Vin 40 V
Power Dissipation Pd Internal Limited W
Operating Junction Temperature Range TJ -20 ~ +150
Storage Temperature Range T
-65 ~ +150
STG
o
C
o
C
Electrical Characteristics
(VI -VO = 5.0 V, Io=500mA for TO-220/TO-263 packages, Io=200mA for TO-252/SOT-223 package;
Tj =T
LOW
to T
see [Note 1]; Pmax per [Note 2]; unless otherwise specified.)
HIGH
CHARACTERISTIC FIGURE SYMBOL MIN. TYP. MAX. UNIT
Reference voltage (Note 4) Pd ≤ Pmax,
10mA ≤ Io ≤ Imax, 3.0 V ≤ Vi
- Vo ≤ 40 V
Line regulation (Note 3)
o
Ta = 25
C, 3.0 V ≤ Vi -Vo ≤ 40 V
Load regulation (Note 3)
o
Ta = 25
C, 10mA ≤ IO ≤ Imax, VO ≤ 5.0
≥ 5.0
V
O
Thermal regulation
o
Ta = 25
C, 20 ms Pulse
3
1
2 REGload
Vref
REGline
1.20
--
--
--
--
1.25
0.01
5.0
0.1
0.03
1.30
0.07
%/V
25
0.5
mV
%V
0.07 %Vo/W
Adjustment pin current 3 Iadj -- 50 100 uA
Adjustment pin current change, Pd ≤ Pmax,
10mA ≤ Io ≤ Imax, 2.5V ≤ V
- VO ≤ 40V
I
Maximum output current
Pd ≤ Pmax, (Vin-Vout) ≤15V
CZ, CM Package
CP, CW Package
Temperature stability (T
LOW
≤ Tj ≤ T
) 3 TS -- 1 -- %
HIGH
Minimum load current to maintain regulation
- VO = 40 V)
(V
I
RMS Noise, % of V
Ta =25 oC, 10H
Long-term stability (Note 5), Tj = T
o
Ta =25
C for endpoint measurements ,1000hrs
O,
≤ f ≤ 10KHZ
Z
HIGH
1.2
3 Imin -- 3.5 10 mA
-- N -- 0.003 -- %
3 S -- 0.3 1.0 %
∆Iadj
Imax
-- 0.2 5.0 uA
1.5
0.5
Notes:
1. T
= -20 oC, T
LOW
= + 150oC
HIGH
2. Pmax: CZ package=20W, CM package=3W, CP package=1.5W, CW package=0.8W,
3. Load and line regulation are specified at constant junction temperature. Changes in V
due to heating effects must
O
be taken into account separately. Pulse testing with low duty cycle is used.
4. Selected devices with tightened tolerance reference voltage available.
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. Cadj, when used, is connected between the adjustment pin and ground.
V
A
TS317 2-8 2003/12 rev. D
Block Diagram
Test Circuit
Figure 1. line regulation and ∆Iadj/line test circuit
TS317 3-8 2003/12 rev. D
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