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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 o ver an output voltage range of 1.25 v to 37 v. this voltage regul ator is exceptionally easy to use and require only two external resistors to set the output voltage. further, it em ploys internal current limiting, thermal shutdown a nd 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 apprecia ble distance from power supply filter. co is not needed for stability, however, it does im prove transient response. vout = 1.25 v(1 + r2 / r1 ) + i adj r2 since i adj is controlled to less than 100 m a, 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 pin definition : 1. adjustable 2. output 3. input heatsink is connected to pin 2
ts317 3-terminal adjustable positive voltage regulator 2/14 version: d07 thermal performance condition package type symbol typ unit thermal resistance junction to air to-220 r ja 50 o c/w to-263 55 to-252 100 sot-223 130 thermal resistance junction to case to-220 r 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=2 00ma 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 specif ied 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 u sed. 3. cadj, when used, is connected betwe en the adjustment pin and ground. since long-term s tability cannot be measured on each device before shipment, this specification is an engineering esti mate of average stability from lot to lot. 4. power dissipation within an ic volt age regulator produces a temperature gradient on th e die, affecting individual ic components on the di e. these effects can be minimized by proper integra ted circuit design and layout techniques. thermal regulat ion 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 spe cified time.
ts317 3-terminal adjustable positive voltage regulator 3/14 version: d07 functional block diagram test circuit figure 1. line regulation test circui t figure 2. load regulation and ? iadj/load test circuit figure 3. standard test circui t figure 4. ripple rejectio n test circuit
ts317 3-terminal adjustable positive voltage regulator 4/14 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 5/14 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 op eration, the ts317 develops and maintains a nominal 1.25v reference (vref) between its output and adjustment terminals. this r eference voltage is converted to a programming curr ent (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 (iad j) represents an error term in the equation, the ts 317 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 i s possible. figure 17. basic circuit configuration figure 18. voltage regulator with protection diode protection diode when external capacitors are used with any i.c. reg ulator it is sometimes necessary to add protection diodes to prevent the capacitors from discharging through low current poi nts into the regulator. figure 18 shows the ts317 with the recommended prot ection 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 s hort circuit. diode d2 protects against capacitor c adj discharging through the i.c. during an output shor t 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 lo ad 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 r egulator as possible to minimize line drops which effectively appear in ser ies with the reference, thereby degrading regulatio n. the ground end of r2 can be returned near the load ground to provide remote ground sensing and improve load regulation. external capacitor a 0.1 m f disc or 1 m f tantalum input bypass capacitor (cin) is recommen ded to reduce the sensitivity to input line impedan ce. the adjustment terminal may be bypassed to ground t o improve ripple rejection. this capacitor (cadj) p revents 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 capacit ance, like any feedback circuit, certain values of external capacitance can cause excessive ringing. an output increased. a 10u m f 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 stabilit y.
ts317 3-terminal adjustable positive voltage regulator 7/14 version: d07 application information (continue) figure 19. laboratory power supply with adjustabl e 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 powe r dissipation vs. p.c.b copper length figure 26. sot-223 thermal resistance and maximum p ower 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 14/14 version: d07 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any erro rs 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 doc ument. except as provided in tscs terms and condit ions of sale for such products, tsc assumes no liability whatsoever, and disclaims any express or implied warranty, rel ating to sale and/or use of tsc products including liability or w arranties relating to fitness for a particular purp ose, 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 applica tions. customers using or selling these products for use in such app lications do so at their own risk and agree to full y indemnify tsc for any damages resulting from such improper use or sal e.

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