page 1 of 4 dc/dc converters tsrn-1sm series, 1 a switching regulator features compact smd package suitable for positive & negative output circuit adjustable output voltage wide input up to 42 vdc remote on/off input built in flter capacitors operation temp. range C40c to +85c no heat-sink required over-temperature protection short circuit protection excellent line / load regulation low standby current moisture sensitivity level (msl) 1 qualifed for leadfree refow solder process 3-year product warranty the new tsrn-1sm series are step-down nonCisolated switching regulators in com - pact smd package. they are an ideal solution to replace ineffcient linear regula - tors. the high effciency up to 95 % allows full load operation up to +55c (+85c with derating) ambient temperature without the need of forced aircooling. the tsrn-1sn switching regulators provide other signifcant features over linear regulators, i.e. better output accuracy (2 %), lower standby current of ~4 ma and no requirement of external capacitors. they are suitable for positive or negative output circuits and offer a trim input for output voltage adjustment. the high ef - fciency, low standby power consumption and remote on/off function make these regulators an ideal solution for energy sensitive applications. order code 1) input voltage output voltage output current effciency typ. range 2) / (nominal) nominal trim range 3) max. @ vin min. @ vin 36vdc positive output circuit tsrn 1-0525sm 3.0 C 5.5 vdc (5 vdc) 2.5 vdc 1.2 C 3.6 vdc 95.5 % 95 % (at 5.5vdc) tsrn 1-2433sm 4.6 C 42 vdc (12 v d c ) 3.3 vdc 1.5 C 5.5 vdc 8 7. 5 % 80 % tsrn 1-2450sm 6.5 C 42 vdc (12 v d c ) 5.0 vdc 2.5 C 8.0 vdc 91.5 % 83.5 % tsrn 1-2490sm 10.5 C 42 vdc (12 v d c ) 9.0 v d c 4.5 C 12.6 vdc 1.0 a 94.5 % 89 % tsrn 1-24120sm 13.5 C 42 vdc (24 vdc) 12 vd c 4.5 C 13.5 vdc 95.0 % 91 % tsrn 1-24150sm 16.5 C 42 vdc (24 vdc) 15 vd c 4.5 C 15.5 vdc 95.5 % 92.5 % negative output circuit tsrn 1-2433sm 4.6 C 32 vdc (12 v d c ) -3.3 vdc -1.5 C -5.5 vdc 0.6 a 74 % 77 % tsrn 1-2450sm 4.6 C 31 vdc (12 v d c ) -5.0 vdc -2.5 C -8.0 vdc 0.4 a 80 % 78 % tsrn 1-2490sm 7 C 27 vdc (12 v d c ) -9.0 v d c -4.5 C -12.6 vdc 0.3 a 85 % 82 % tsrn 1-24120sm 7 C 24 vdc (12 v d c ) -12 vd c -4.5 C -13.5 vdc 0.3 a 84 % 86 % tsrn 1-24150sm 7 C 21 vdc (12 v d c ) -15 vd c -4.5 C -15.5 vdc 0.2 a 85 % 84 % models 1) same order code for positive and negative output operation, see page 3 for circuits. 2) for input voltage higher 36 vdc an input capacitor 22 f/ 50 v is required. 3) for positive output circuit, input voltage must be higher than output voltage set: >0.5 v for TSRN1-0525SM and >1.5 v for other models. for negative output circuit, input voltage plus absolute output voltage set must not exceed 36 vdc (vin + |vout| < 36 vdc) http://www.tracopower.com
input specifications no load input current C positive output circuit tsrn 1- 0525sm: 6 ma typ. tsrn 1-2433sm : 1.5 ma typ. other models: 4 ma typ. C negative output circuit -3.3 / -5.5 vout models: 3 ma typ. -9.0 / -12 vout models: 7 ma typ. tsrn 1-24150sm : 10 ma typ. reflected ripple current 100 ma typ. input filter internal capacitors output specifications voltage set accuracy 2 % (at full load) regulation C input variation 0.2 % C load variation 0 C 100 % 0.6 % C load variation 10 C 90 % 0.3 % startup voltage overshoot 1.0 % max. minimum load not required ripple and noise C |vout| = 1.2v C 8v 50 mvpk-pk max . (20 mhz bandwidth) C |vout| = 8.1v C 15v 75 mvpk-pk max . temperature coefficient 0.015 % / c max. dynamic load response (change of 50% to 100% load) 150 mv max. peak variation 250 s max. response time startup time C start up time at nominal vin, constant resistive load 5 ms typ. short circuit protection continuous, automatic recovery current limitation tsrn 1- 0525sm: at 4.0 a typ. other models: at 2.0 a typ. capacitive load 470 f max. general specifications temperature ranges C operating C40c to +85c C case temperature +130c. max. C storage C55c to +125c derating C positive output circuit 1.7 %/k above +55c C negative output circiut 2.5 %/k above +65c thermal shock, mechanical shock & vibration en 61373, mil-std-810f C test conditions www.tracopower.com/products/mil810.pdf overtemperature protection at +170c (on internal ic) humidity (non condensing) 90 % rel h max. reliability, calculated mtbf (mil-hdbk-217f, at +25c, ground benign) >4500000 h isolation voltage none switching frequency tsrn 1- 0525sm: 410 khz typ. tsrn 1-2433sm : 300 khz typ. other models: 580 khz typ. safety standards (designed to meet) ul/cul 60950-1, iec/en 60950-1 remote on/off C control pin referance for positive output circuit gnd C control pin referance for negative output circuit -vout C on: 2 C 5 vdc or open circuit. C off: 0 C 0.8 vdc or short circuit C off idle current: 1.2 ma typ. environmental compliance C reach www.tracopower.com/products/tsrn1sm-reach.pdf C rohs rohs directive 2011/65/eu dc/dc converters tsrn-1sm series 1 a all specifcations valid at nominal input voltage, full load and +25c after warm-up time unless otherwise stated. page 2 of 4 http://www.tracopower.com
page 3 of 4 physical specifications casing material non-conductive plastic (ul94v-0 rated) potting material epoxy, (ul 94v-0 rated) weight 1.7 g (0.06 oz) lead-free reflow solder process as per j-std-020d.01 (to find at: www.jedec.org - free registration rqueired) C max. peak body temperature 245c moisture sensitivity level (msl) level 1 as per ipc j-std-033b.1 (to find at: www.jedec.org - free registration required) washing baking after washing: 100c for 30 min. packaging www.tracopower.com / products / tsrn1sm-pack.pdf dc/dc converters tsrn-1sm series 1 a applications notes positive output operation: negative output operation (not for model tsrn 1-0525sm) : c1 = 10 f / 50 v, 1210 x5r mlcc c2 = 10 f / 25 v, 1206 x5r mlcc output voltage adjustment: 15 7,9 tsrn 1sm +v in gnd +v out gnd 10 remote on/o c1 c1 15 7,9 +v in tsrn 1sm c2 gnd -v out gnd 10 remote on/o 7, 9 ru 6 tr im up 6 rd 5 tr im do wn model ru [kohm] rd [kohm] tsrn 1-0525sm 40.75 / (vo C 2.5) (vo . 50.75 C 40.75) / (2.5 C vo) tsrn 1-2433sm 26.4 / (vo C 3.3) (vo . 33 C 26.4) / (3.3 C vo) tsrn 1-2450sm 160 / (vo C 5) (vo . 200 C 160) / (5 C vo) tsrn 1-2490sm 80 / (vo C 9) (vo . 100 C 80) / (9 C vo) tsrn 1-24120sm 240 / (vo C 12) (vo . 300 C 240) / (12 C vo) tsrn 1-24150sm 240 / (vo C 15) (vo . 300 C 240) / (15 C vo) vo = output voltage to be adjusted. calculate with absolute values for negative output circuit open trim = nominal output voltage (open remote on/off input = on) (open remote on/off input = on) c1 = 22 f/ 50 v (required only if input voltage is higher than 36 v) http://www.tracopower.com
outline dimensions dc/dc converters tsrn-1sm series 1 a rev. february 07. 2014 pin pos. neg. 1 +vin +vin 5 +vout gnd 6 trim 7 gnd -vout 9 gnd -vout 10 remote on/off pin-out page 4 of 4 dimensions in [mm], () = inch pin pitch tolerances: 0.25 (0.01) pin profile tolerance: 0.1 (0.004) other tolerances: 0.5 (0.02) top view 15 6 7 9 10 9. 3 (0.3 7) 11.8 2 (0.4 7) 2. 54 10.16 (0.10) (0.40) 2. 54 2. 54 5. 08 (0.10) (0.10) (0.20) 15 .2 (0.60) 0. 30 (0. 01) 7. 3 (0.2 9) 0.5 (0.02) (0.51) 9.7 (0.38) 1 5 6 7 9 10 9.3 (0.37) 10.16 (0.40) 2.54 (0.10) 1.5 5.08 (0.20) (0.006) 12.92 solder pad dimension sp ec i?cati ons can be changed wi thout noti ce! make sure you are using the latest documentation, downloadable at www.tracopower. com www .tracopower. com
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