Non-Isolated DC/DC Converter (POL) * SIP-package fits existing TO-220 footprint * Suitable for positive & negative output circuit * Pin compatible with LMxx linear regulators * * * * Built in filter capacitors * * * Wide input range up to 36 VDC Operation temp. range -40C to +85C No heat-sink required Over-temperature & short circuit protection TSRN 1 Series, 1 A The new TSRN-1 series step-down switching regulators are drop-in replacement for inefficient 78xx linear regulators. A high efficiency up to 95% allows full load operation up to +70C (+85C with derating) ambient temperature without the need of any heat-sink or forced air cooling. The TSRN-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 positive or negative output circuits. The high efficiency and low standby power consumption make these regulators an ideal solution for energy sensitive applications. Excellent line/load regulation 3-year product warranty Models Order Code Output Current max. Input Voltage Range TSRN 1-2415 TSRN 1-2418 4.6 - 36 VDC (12 VDC nom.) TSRN 1-2425 Output Voltage nom. Efficiency typ. 1.5 VDC 77 % (at Vin min.) 1.8 VDC 81 % (at Vin min.) 2.5 VDC 84 % (at Vin min.) 3.3 VDC 88 % (at Vin min.) 6.5 - 36 VDC (12 VDC nom.) 5 VDC 92 % (at Vin min.) TSRN 1-2465 8 - 36 VDC (12 VDC nom.) 6.5 VDC 93 % (at Vin min.) TSRN 1-2433 1'000 mA TSRN 1-2450 TSRN 1-2490 10.5 - 36 VDC (12 VDC nom.) 9 VDC 95 % (at Vin min.) TSRN 1-24120 13.5 - 36 VDC (24 VDC nom.) 12 VDC 95 % (at Vin min.) TSRN 1-24150 16.5 - 36 VDC (24 VDC nom.) 15 VDC 96 % (at Vin min.) Options Suffix A Note - Models with angular pin version (see outline dimensions) - For external circuit proposal for negative output voltage, refer to application note www.tracopower.com April 27, 2020 Page 1 / 4 TSRN 1 Series, 1 A Input Specifications Input Current - At no load Reflected Ripple Current Recommended Input Fuse 12 Vin models: 24 Vin models: 12 Vin models: 24 Vin models: 12 Vin models: 24 Vin models: Input Filter 2 mA typ. 3 mA typ. 100 mAp-p typ. 100 mAp-p typ. 2'000 mA (slow blow) 2'000 mA (slow blow) (The need of an external fuse has to be assessed in the final application.) Internal Capacitor Output Specifications Voltage Set Accuracy Regulation - Input Variation (Vmin - Vmax) - Load Variation (10 - 100%) Ripple and Noise (20 MHz Bandwidth) 1.5 Vout models: 1.8 Vout models: 2.5 Vout models: 3.3 Vout models: 5 Vout models: 6.5 Vout models: 9 Vout models: 12 Vout models: 15 Vout models: Capacitive Load Minimum Load Temperature Coefficient Start-up Time Start-up Overshoot Voltage Short Circuit Protection Output Current Limitation Transient Response - Peak Variation - Response Time 2% max. 0.2% max. 0.6% max. (1.5 Vout models, straight pin vers.) 1.2% max. (1.5 Vout models, angular pin vers.) 0.4% max. (1.8 Vout models, straight pin vers.) 1.2% max. (1.8 Vout models, angular pin vers.) 0.4% max. (other output models, both pin vers.) 50 mVp-p max. 50 mVp-p max. 50 mVp-p max. 50 mVp-p max. 50 mVp-p max. 50 mVp-p max. 75 mVp-p max. 75 mVp-p max. 75 mVp-p max. 470 F max. Not required 0.015 %/K max. 5 ms typ. 1% max. Continuous, Automatic recovery 200% typ. of Iout max. 150 mV typ. / 250 mV max. (50% Load Step) 250 s typ. / 350 s max. (50% Load Step) General Specifications Relative Humidity Temperature Ranges Power Derating Over Temperature Protection Switch Off 95% max. (non condensing) -40C to +85C +100C max. -55C to +125C 2.86 %/K above 65C 170C typ. (Automatic recovery) Internal IC temperature Natural convection (20 LFM) 240 - 360 kHz (PWM) (1.5 - 3.3 Vout models) 464 - 696 kHz (PWM) (5 - 15 Vout models) Non-isolated 20'000'000 h (MIL-HDBK-217F, ground benign) - Operating Temperature - Case Temperature - Storage Temperature - High Temperature - Protection Mode - Measurement Point Cooling System Switching Frequency Insulation System Reliability - Calculated MTBF All specifications valid at nominal voltage, full load and +25C after warm-up time unless otherwise stated. www.tracopower.com April 27, 2020 Page 2 / 4 TSRN 1 Series, 1 A Environment MIL-STD-810F EN 61373 MIL-STD-810F EN 61373 MIL-STD-810F EN 61373 Non-conductive Plastic (UL94 V-0 rated) Silicone (UL 94 V-0 rated) Copper Nickel (2 - 3 m) Tin (3 - 5 m), matte Wave Soldering 265C / 10 s max. THD (Through-Hole Device) 1.9 g www.tracopower.com/info/reach-declaration.pdf www.tracopower.com/info/rohs-declaration.pdf - Vibration - Mechanical Shock - Thermal Shock Housing Material Potting Material Pin Material Pin Foundation Plating Pin Surface Plating Soldering Profile Connection Type Weight Environmental Compliance - Reach - RoHS Supporting Documents Overview Link (for additional Documents) www.tracopower.com/overview/tsrn1 Outline Dimensions Straight pin version (Standard) 7.5 (0.30) Bottom view Pinout 2.4 (0.095) 0.25 (0.01) 0.5 (0.02) Pin Function 1 +Vin 2 GND 3 +Vout 3 4.1 2 3.3 2.542.54 (0.13) (0.1) (0.1) 10.2 (0.40) (0.16) 1 0.5 (0.02) 11.7 (0.46) Dimensions in mm (inch) Tolerances: x.xx 0.5 (x.x 0.02) Tolerances: x.xxx 0.25 (x.xx 0.01) Pin pich tolerances: 0.25 (0.01) Pin dimension tolerances: 0.1 (0.004) All specifications valid at nominal voltage, full load and +25C after warm-up time unless otherwise stated. www.tracopower.com April 27, 2020 Page 3 / 4 TSRN 1 Series, 1 A Angular pin version (Suffix A) 0.5 (0.02) 1.5 (0.06) 7.5 (0.30) 2.3 (0.09) 4.1 (0.16) Bottom view Pinout Pin Function 1 +Vin 2 GND 3 +Vout 0.25 (0.01) 1 2 3 3.3 2.54 2.54 (0.13) (0.1) (0.1) 10.2 (0.40) 0.5 (0.02) 11.7 (0.46) Dimensions in mm (inch) Tolerances: x.xx 0.5 (x.x 0.02) Tolerances: x.xxx 0.25 (x.xx 0.01) Pin pich tolerances: 0.25 (0.01) Pin dimension tolerances: 0.1 (0.004) (c) Copyright 2020 Traco Electronic AG Specifications can be changed without notice. www.tracopower.com Rev. April 27, 2020 Page 4 / 4