TS317CPRO - TAIWAN SEMICONDUCTOR MANUFACTURING

TS317

3-Terminal Adjustable Positive Voltage Regulator

1/14

Version: D07

TO

-

220

TO

-

263

(D

2

PAK)

TO

-

252

(DPAK)

SOT

-

223

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. Package Packing

TS317CZ C0 TO-220 50pcs / Tube

TS317CM RN TO-263 800pcs / 13” Reel

TS317CP RO TO-252 2.5Kpcs / 13” Reel

TS317CW RP SOT-223 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 Symbol Limit Unit

Input Voltage V

IN

40 V

Power Dissipation P

D

Internal Limited W

Operating Junction Temperature T

J

0~+125

o

C

Storage Temperature Range T

STG

-65~+150

o

C

Definition

:

1. Adjustable

2. Output

3. Input

Heatsink is connected to Pin 2

TS317

3-Terminal Adjustable Positive Voltage Regulator

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Version: D07

Thermal Performance

Condition Package type

Symbol

Typ Unit

Thermal Resistance Junction to Air

TO-220

RΘ

JA

50

o

C/W

TO-263 55

TO-252 100

SOT-223 130

Thermal Resistance Junction to Case

TO-220

RΘ

JC

5

o

C/W

TO-263 5

TO-252 10

SOT-223 15

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

10mA ≤ Io ≤ Imax, Pd ≤ Pmax, 3 Vref 1.20 1.25 1.30 V

Line regulation (Note 3)

Ta = 25

o

C, 3V≤Vi-Vo≤40V 1 REGline -- 0.01 0.07 %/V

Load regulation Ta = 25

o

C, 10mA ≤ I

O

≤ Imax (Note 2)

V

O

≤ 5.0

V

O

≥ 5.0

2 REGload

--

5.0

0.1

25

0.5

mV

%V

Thermal regulation, Ta = 25

o

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

10mA ≤ Io ≤ Imax, Pd ≤ Pmax, 1.2

∆Iadj -- 0.2 5.0 uA

Maximum output current, V

I

- V

O

≤ 15V, Pd ≤ Pmax

TO-220 / TO-263 Package

TO-252 / SOT-223 Package 3 Imax

1.5

0.5

--

-- A

Temperature stability (T

LOW

≤ Tj ≤ T

HIGH

) 3 T

S

-- 1 -- % Vo

Minimum load current to maintain regulation

(V

I

- V

O

= 40 V) 3 ILmin -- 3.5 10 mA

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

Cadj = 10uF 4 PSRR

--

66

65

80

--

-- dB

Long-term stability (Note 4), Tj

= 125ºC, 1000hrs 3 S -- 0.3 1.0 %

Notes: 1. T

LOW

to T

HIGH

= 0

o

C to +125

o

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.

TS317

3-Terminal Adjustable Positive Voltage Regulator

3/14

Version: D07

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

TS317

3-Terminal Adjustable Positive Voltage Regulator

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Version: D07

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

TS317

3-Terminal Adjustable Positive Voltage Regulator

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Version: D07

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

Figure 16. Load Transient Response

TS317

3-Terminal Adjustable Positive Voltage Regulator

6/14

Version: D07

Application information

Basic Circuit Operation

The TS317 is a 3-terminal floating regulator. In operation, the TS317 develops and maintains a nominal 1.25V reference (Vref)

between its output and adjustment terminals. This reference voltage is converted to a programming current (Iprog.) by R

1

(see

Figure 17), and this constant current flows through R

2

to ground. The regulated output voltage is given by:

Vout = Vref ( 1 + R2 / R1 ) + Iadj * R2

Since the current from the adjustment terminal (Iadj) represents an error term in the equation, the TS317 was designed to control

Iadj to less than 100uA and keep it constant. To do this, all quiescent operating current is returned to the output terminal. This

imposes the requirement for a minimum load current. If the load current is less than this minimum, the output voltage will rise.

Since the TS317 is a floating regulator, it is only the voltage differential across the circuit which is important to performance, and

operation at high voltages with respect to ground is possible.

Figure 17. Basic Circuit Configuration

Figure 18. Voltage Regulator with Protection Diode

Protection Diode

When external capacitors are used with any I.C. regulator it is sometimes necessary to add protection diodes to prevent the

capacitors from discharging through low current points into the regulator.

Figure 18 shows the TS317 with the recommended protection diodes for output voltages in excess of 25 V or high capacitance

values (Co > 25uF, Cadj > 10uF). Diode D1 prevents Co from discharging thru the I.C. during an input short circuit. Diode D2

protects against capacitor C

ADJ

discharging through the I.C. during an output short circuit. The combination of diodes D1

and D2

prevents C

ADJ

from discharging through the I.C. during an input short circuit.

Load Regulation

The TS317 is capable of providing extremely good load regulation, but a few precautions are needed to obtain maximum

performance. For best performance, the programming resistor (R1) should be connected as close to the regulator as possible to

minimize line drops which effectively appear in series with the reference, thereby degrading regulation. The ground end of R2 can

be returned near the load ground to provide remote ground sensing and improve load regulation.

External Capacitor

A 0.1µF disc or 1µF tantalum input bypass capacitor (Cin) is recommended to reduce the sensitivity to input line impedance.

The adjustment terminal may be bypassed to ground to improve ripple rejection. This capacitor (Cadj) prevents ripple from being

amplified as the output voltage is rejection about 15dB at 120 H

Z

in a 10V application.

Although the TS317 is stable with no output capacitance, like any feedback circuit, certain values of external capacitance can

cause excessive ringing. An output increased. A 10uµF capacitor should improve ripple capacitance (Co) in the form of a 1uF

tantalum or 25uF aluminum electrolytic capacitor on the output swamps this effect and insures stability.

TS317

3-Terminal Adjustable Positive Voltage Regulator

7/14

Version: D07

Application information (Continue)

Figure 19. “LABORATORY” power supply with adjustable current limit and output voltage

Figure 20. Adjustable Current Limiter

Figure 21. 5V Electronic Shutdown Regulator

TS317

3-Terminal Adjustable Positive Voltage Regulator

8/14

Version: D07

Application information (Continue)

Figure 22. Slow Turn-on Regulator

Figure 23. Current Regulator

TS317

3-Terminal Adjustable Positive Voltage Regulator

9/14

Version: D07

Application Information

Figure 24. D

2

PAK Thermal Resistance and Maximum Power

Dissipation vs. P.C.B Copper Length

Figure 25. DPAK Thermal Resistance and Maximum Power

Dissipation vs. P.C.B Copper Length

Figure 26. SOT-223 Thermal Resistance and Maximum Power

Dissipation vs. P.C.B Copper Length

TS317

3-Terminal Adjustable Positive Voltage Regulator

10/14

Version: D07

TO-220 Mechanical Drawing

Marking Diagram

Y

= Year Code

M

= 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)

L

= Lot Code

CZ

= Package Code for TO

-220

TO-220 DIMENSION

DIM

MILLIMETERS INCHES

MIN MAX MIN MAX

A 10.000 10.500 0.394 0.413

B

3.740 3.910 0.147 0.154

C 2.440 2.940 0.096 0.116

D - 6.350 - 0.250

E 0.381 1.106 0.015 0.040

F 2.345 2.715 0.092 0.058

G 4.690 5.430 0.092 0.107

H 12.700 14.732 0.500 0.581

I 8.382 9.017 0.330 0.355

J 14.224 16.510 0.560 0.650

K 3.556 4.826 0.140 0.190

L 0.508 1.397 0.020 0.055

M 27.700 29.620 1.060 1.230

N 2.032 2.921 0.080 0.115

O 0.255 0.610 0.010 0.024

P 5.842 6.858 0.230 0.270

TS317

3-Terminal Adjustable Positive Voltage Regulator

11/14

Version: D07

TO-263 Mechanical Drawing

Marking Diagram

Y

= Year Code

M

= 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)

L

= Lot Code

CM

= Package Code for TO

-263

TO-263 DIMENSION

DIM

MILLIMETERS INCHES

MIN MAX MIN MAX

A 10.000 10.500 0.394 0.413

B 14.605 15.875 0.575 0.625

C 0.508 0.991 0.020 0.039

D 2.420 2.660 0.095 0.105

E 4.064 4.830 0.160 0.190

F 1.118 1.400 0.045 0.055

G 0.450 0.730 0.018 0.029

H 8.280 8.800 0.325 0.346

I 1.140 1.400 0.044 0.055

J 1.480 1.520 0.058 0.060

TS317

3-Terminal Adjustable Positive Voltage Regulator

12/14

Version: D07

TO-252 Mechanical Drawing

Marking Diagram

Y

= Year Code

M

= 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)

L

= Lot Code

CP

= Package Code for TO

-252

TO-252 DIMENSION

DIM

MILLIMETERS INCHES

MIN MAX MIN MAX

A 2.3BSC 0.09BSC

A1

4.6BSC 0.18BSC

B 6.80 7.20 0.268 0.283

C 5.40 5.60 0.213 0.220

D 6.40 6.65 0.252 0.262

E 2.20 2.40 0.087 0.094

F 0.00 0.20 0.000 0.008

G 5.20 5.40 0.205 0.213

G1

0.75 0.85 0.030 0.033

G2

0.55 0.65 0.022 0.026

H 0.35 0.65 0.014 0.026

I 0.90 1.50 0.035 0.059

J 2.20 2.80 0.087 0.110

K 0.50 1.10 0.020 0.043

L 0.90 1.50 0.035 0.059

M 1.30 1.70 0.051 0.67

TS317

3-Terminal Adjustable Positive Voltage Regulator

13/14

Version: D07

SOT-223 Mechanical Drawing

Marking Diagram

Y

= Year Code

M

= 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)

L

= Lot Code

CW

= Package Code for TO

-223

SOT-223 DIMENSION

DIM

MILLIMETERS INCHES

MIN MAX MIN MAX

A 6.350 6.850 0.250 0.270

B 2.900 3.100 0.114 0.122

C 3.300 3.750 0.129 0.148

D 0.660 0.840 0.025 0.033

E 4.550 4.650 0.179 0.183

F 2.250 2.350 0.088 0.093

G 0.850 1.050 0.033 0.041

H 6.700 7.300 0.263 0.287

I 0.230 0.355 0.009 0.014

J 10° 16° 10° 16°

K 1.550 1.800 0.061 0.071

TS317

3-Terminal Adjustable Positive Voltage Regulator

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Version: D07

Notice

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assumes no responsibility or liability for any errors or inaccuracies.

Information contained herein is intended to provide a product description only. No license, express or implied, to any

intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for

such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale

and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability,

or infringement of any patent, copyright, or other intellectual property right.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers

using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for

any damages resulting from such improper use or sale.