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 filter capacitors Operation temp. range -40C to +85C No heat-sink required Over-temperature protection Short circuit protection The new TSRN-1SM series are step-down non-isolated switching regulators in compact SMD package. They are an ideal solution to replace inefficient linear regula Excellent line / load regulation tors. The high efficiency up to 95 % allows full load operation up to +55C (+85C Low standby current with derating) ambient temperature without the need of forced aircooling. Moisture sensitivity level (MSL) 1 The TSRN-1SN switching regulators provide other significant features over linear regulators, i.e. better output accuracy (2 %), lower standby current of ~4 mA and Qualified for leadfree reflow solder process 3-year product warranty 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 efficiency, low standby power consumption and remote On/Off function make these regulators an ideal solution for energy sensitive applications. Models Order code 1) Input voltage range 2) / (nominal) Output voltage nominal trim range 3) 1.2 - 3.6 VDC Output current max. Efficiency typ. @ Vin min. @ Vin max. 95.5 % 95 % Positive output circuit TSRN 1-0525SM 3.0 - 5.5 VDC (5 VDC) 2.5 VDC TSRN 1-2433SM 4.6 - 42 VDC (12 VDC) 3.3 VDC 1.5 - 5.5 VDC 87.5 % 80 % TSRN 1-2450SM 6.5 - 42 VDC (12 VDC) 5.0 VDC 2.5 - 8.0 VDC 91.5 % 83.5 % TSRN 1-2490SM 10.5 - 42 VDC (12 VDC) 9.0 VDC 4.5 - 12.6 VDC 94.5 % 89 % TSRN 1-24120SM 13.5 - 42 VDC (24 VDC) 12 VDC 4.5 - 13.5 VDC 95.0 % 91 % TSRN 1-24150SM 16.5 - 42 VDC (24 VDC) 15 VDC 4.5 - 15.5 VDC 95.5 % 92.5 % 1.0 A Negative output circuit TSRN 1-2433SM 4.6 - 32 VDC (12 VDC) -3.3 VDC -1.5 - -5.5 VDC 0.6 A 74 % 77 % TSRN 1-2450SM 4.6 - 31 VDC (12 VDC) -5.0 VDC -2.5 - -8.0 VDC 0.4 A 80 % 78 % TSRN 1-2490SM 7 - 27 VDC (12 VDC) -9.0 VDC -4.5 - -12.6 VDC 0.3 A 85 % 82 % TSRN 1-24120SM 7 - 24 VDC (12 VDC) -12 VDC -4.5 - -13.5 VDC 0.3 A 84 % 86 % TSRN 1-24150SM 7 - 21 VDC (12 VDC) -15 VDC -4.5 - -15.5 VDC 0.2 A 85 % 84 % 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 Page 1 of 4 DC/DC Converters TSRN-1SM Series 1A Input Specifications No load input current - positive output circuit TSRN 1-0525SM: TSRN 1-2433SM: other models: - negative output circuit -3.3 / -5.5 Vout models: -9.0 / -12 Vout models: TSRN 1-24150SM: Reflected ripple current 6 mA typ. 1.5 mA typ. 4 mA typ. 3 mA typ. 7 mA typ. 10 mA typ. 100 mA typ. Input filter internal capacitors Output Specifications Voltage set accuracy 2 % (at full load) Regulation - Input variation 0.2 % - Load variation 0 - 100 % 0.6 % - Load variation 10 - 90 % 0.3 % Startup voltage overshoot 1.0 % max. Minimum load not required Ripple and noise (20 MHz Bandwidth) - |Vout| = 1.2V - 8V 50 mVpk-pk max. - |Vout| = 8.1V - 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 - start up time at nominal Vin, constant resistive load 5 mS typ. Short circuit protection continuous, automatic recovery Current limitation Capacitive load TSRN 1-0525SM: at 4.0 A typ. other models: at 2.0 A typ. 470 F max. General Specifications Temperature ranges - Operating -40C to +85C - case temperature +130C. max. - Storage -55C to +125C Derating - positive output circuit 1.7 %/K above +55C - negative output circiut 2.5 %/K above +65C Thermal shock, mechanical shock & vibration EN 61373, MIL-STD-810F - 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) >4500'000 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 - Control pin referance for positive output circuitGND - Control pin referance for negative output circuit-Vout - On: 2 - 5 VDC or open circuit. - Off: 0 - 0.8 VDC or short circuit - Off idle current: 1.2 mA typ. Environmental compliance - Reach www.tracopower.com/products/tsrn1sm-reach.pdf - RoHS RoHS directive 2011/65/EU All specifications valid at nominal input voltage, full load and +25C after warm-up time unless otherwise stated. http://www.tracopower.com Page 2 of 4 DC/DC Converters TSRN-1SM Series 1A 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) - 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 Applications notes Positive output operation: +Vin 1 5 +Vout TSRN 1SM C1 10 C1 = 22 F/ 50 V (required only if input voltage is higher than 36 V) 7,9 Remote On/Off GND GND (Open Remote On/Off input = On) Negative output operation (not for model TSRN 1-0525SM): GND +Vin 1 C1 GND 5 TSRN 1SM 10 C2 C1 = 10 F / 50 V, 1210 X5R MLCC C2 = 10 F / 25 V, 1206 X5R MLCC 7,9 Remote On/Off -Vout (Open Remote On/Off input = On) Output voltage adjustment: 6 7, 9 Trim Down 6 RD RU Trim Up 5 Model RU [KOhm] RD [KOhm] TSRN 1-0525SM 40.75 / (Vo - 2.5) (Vo . 50.75 - 40.75) / (2.5 - Vo) TSRN 1-2433SM 26.4 / (Vo - 3.3) (Vo . 33 - 26.4) / (3.3 - Vo) TSRN 1-2450SM 160 / (Vo - 5) (Vo . 200 - 160) / (5 - Vo) TSRN 1-2490SM 80 / (Vo - 9) (Vo . 100 - 80) / (9 - Vo) TSRN 1-24120SM 240 / (Vo - 12) (Vo . 300 - 240) / (12 - Vo) TSRN 1-24150SM 240 / (Vo - 15) (Vo . 300 - 240) / (15 - Vo) Vo = output voltage to be adjusted. Calculate with absolute values for negative output circuit Open Trim = nominal output voltage http://www.tracopower.com Page 3 of 4 DC/DC Converters TSRN-1SM Series 1A Outline Dimensions (0.29) (0.10) (0.20) 10 7 9 6 5.08 (0.10) 2.54 (0.20) 2.54 (0.10) (0.47) 11.82 top view 1 9.7 5 6 (0.37) 7 9.3 9 (0.38) (0.10) 1 10 (0.51) 2.54 12.92 9.3 (0.60) (0.37) 15.2 2.54 5.08 1.5 (0.006) 7.3 0.30 (0.01) Solder Pad Dimension 10.16 (0.40) 5 10.16 (0.40) 0.5 (0.02) Pin-Out Pin pos. neg. 1 +Vin +Vin 5 +Vout GND 6 Trim 7 GND -Vout 9 GND -Vout 10 Remote On/Off Dimensions in [mm], () = Inch Pin pitch tolerances: 0.25 (0.01) Pin profile tolerance: 0.1 (0.004) Other tolerances: 0.5 (0.02) Specifications can be changed any time without notice. Rev. 01/13 Jenatschstrasse 1 * CH-8002 Zurich * Switzerland Tel. +41 43 311 45 11 * Fax +41 43 311 45 45 * info@traco.ch * www.tracopower.com Page 4 of 4