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 –40°C to +85°C ◆ 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 +55°C (+85°C ◆ Low standby current with derating) ambient temperature without the need of forced aircooling. ◆ Not 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 µF/ 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 µS 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 µF max. General Specifications Temperature ranges – Operating –40°C to +85°C – case temperature +130°C. max. – Storage –55°C to +125°C Derating – positive output circuit 1.7 %/K above +55°C – negative output circiut 2.5 %/K above +65°C Thermal shock acc. MIL-STD-810F Vibration acc. MIL-STD-810F Overtemperature protection at +170°C (on internal IC) Humidity (non condensing) 90 % rel H max. Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >4´500’000 h Isolation voltage none Switching frequency TSRN 1-0525SM: 410 kHz typ. TSRN 1-2433SM: 300 kHz typ. other models: 580 kHz typ. 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 2002/95/EC All specifications valid at nominal input voltage, full load and +25°C 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 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 245°C Moisture sensitivity level (MSL) level 1 as per J-STD-033B.1 (to find at: www.jedec.org - free registration required) Washing baking after washing: 100°C 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 µF/ 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 TSRN 1SM C1 GND 5 10 C2 C1 = 10 µF / 50 V, 1210 X5R MLCC C2 = 10 µF / 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 Model 5 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. 06/12 Jenatschstrasse 1 · CH-8002 Zurich · Switzerland Tel. +41 43 311 45 11 · Fax +41 43 311 45 45 · [email protected] · www.tracopower.com Page 4 of 4