DC/DC Converters TSN-1 Series, -1 A Switching Regulator Features ◆ Non-isolated converter for negative output ◆ Small size and low profile ◆ Pin compatible with LM79xx linear regulators ◆ No heatsink required ◆ High efficiency up to 96% ◆ Operation temp. range –40°C to +85°C ◆ Protection against overload, short circuit and over-temperature ◆ Fixed switching frequency ◆ Wide input range up to -32 VDC ◆ Excellent line / load regulation ◆ Low standby current ◆ 3-year product warranty The new TSN-1 series step-down switching regulators are drop-in replacement for inefficient 79xx linear regulators. A high efficiency up to 96 % allows full load operation up to +70°C (+85°C with derating) ambient temperature without the need of any heat-sink or forced air cooling. The TSN-1 switching regulators provide other significant features over linear regulators, i.e. better output accuracy (±2 %), lower standby current of ~2 mA and no requirement of external capacitors. They are suitable for negative output circuits. The high efficiency and low standby power consumption make these regulators an ideal solution for energy sensitive applications. Models Order code Input voltage Output voltage Output current max. Efficiency typ. straight pins angular pins range / (nominal) @ Vin min. @ Vin max. TSN 1-2450 TSN 1-2450A -7.0 – -32 VDC (12 VDC) -5.0 VDC 91.5 % 84.5 % TSN 1-2452 TSN 1-2452A -7.0 – -32 VDC (12 VDC) -5.2 VDC 92.0 % 85.0 % TSN 1-2460 TSN 1-2460A -8.0 – -32 VDC (12 VDC) -6.0 VDC 92.5 % 86.5 % TSN 1-2480 TSN 1-2480A -10.5 – -32 VDC (12 VDC) -8.0 VDC 94.0 % 89.0 % -1.0 A TSN 1-2490 TSN 1-2490A -11.5 – -32 VDC (24 VDC) -9.0 VDC 94.5 % 90.5 % TSN 1-24120 TSN 1-24120A -15 – -32 VDC (24 VDC) -12.0 VDC 96.0 % 92.0 % TSN 1-24150 TSN 1-24150A -18 – -32 VDC (24 VDC) -15.0 VDC 96.0 % 93.5 % http://www.tracopower.com Page 1 of 3 DC/DC Converters TSN-1 Series -1 A Input Specifications No load input current Reflected ripple current –3 mA typ. 100 mA typ. Input filter internal capacitors Output Specifications Voltage set accuracy ±2 % (at full load) Regulation – Input variation 1.0 % max. – Load variation (10 – 100 %) 0.6 % max. Startup voltage overshoot 1.0 % max. Minimum load not required Ripple and noise (20 MHz Bandwidth) 5.0 – 5.2 VDC models: 50 mVpk-pk max. 6 – 15 VDC models: 75 mVpk-pk max. Temperature coefficient ±0.015 % / °C max. Dynamic load response (change of 50% to 100% load) 5% of Vout mV peak variation 250 µS max. response time Startup time – start up time at nominal Vin, constant resistive load 15 mS typ. – rise time for 10 % to 90 % Vout 10 mS typ. Short circuit protection continuous, automatic recovery Capacitive load 5.0 – 5.2 VDC models: 1600 µF max. 6.0 – 9.0 VDC models: 1000 µF max. 12 – 15 VDC models: 470 µF max. General Specifications Temperature ranges – Operating –40°C to +85°C – Storage –55°C to +125°C Derating 3.3 %/K above +70°C Thermal shock, mechanical shock & vibration MIL-STD-810F – Test conditions www.tracopower.com/products/mil810.pdf Overtemperature protection at +165°C (on internal IC) Humidity (non condensing) 95 % rel H max. Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >2’000’000 h Isolation voltage none Switching frequency 5.0 – 5.2 VDC models: 380 kHz typ. 6.0 – 15 VDC models: 500 kHz typ. Physical Specifications Casing material non-conductive plastic Potting material silicon (flammability to UL 94V-0 rated) Weight 3.1 g (0.11 oz) Soldering profile max. +265°C / 10 sec. (wave soldering) Environmental compliance – Reach www.tracopower.com/overview/tsn1 – RoHS RoHS directive 2011/65/EU 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 3 DC/DC Converters TSN-1 Series -1 A Outline Dimensions Straight pin version Angular pin version (suffix A) 0.5 (0.02) 0.5 (0.02) 1.5 (0.06) 7.5 (0.30) 3.0 (0.11) 4.1 (0.16) 7.5 (0.30) Bottom view 3.1 (0.12) 0.3 (0.01) Bottom view 0.3 (0.01) 11.7 (0.46) 11.7 (0.46) 3.3 2.54 2.54 16.5 (0.65) 1 3.3 2 3 0.5 (0.02) 3 4.1 2 (0.16) 1 0.5 (0.02) 16.5 (0.65) Pin-Out Pin Single 1 GND 2 -Vin 3 -Vout 2.54 2.54 (0.13) (0.1) (0.1) Dimensions in [mm], () = Inch Pin pitch tolerances: ±0.25 (±0.01) Pin profile tolerance: ±0.1 (±0.004) Other tolerances: ±0.5 (±0.02) (0.13) (0.1) (0.1) Specifications can be changed without notice! Make sure you are using the latest documentation, downloadable at www.tracopower.com www.tracopower.com Rev. April 28. 2015 Page 3 of 3