Non-Isolated DC/DC Converter (POL) TSR 2 Series, 2 A Ultra compact SIP package 0.55 x 0.30 x 0.40 inch Up to 96% efficiency No heat-sink required Pin compatible with LMxx linear regulators The new TSR 2 series step-down switching regulators are drop-in replacement Built in filter capacitors for inefficient LMxx linear regulators. A high efficiency up to 96% allows full Operating temperature range -40C to load operation up to +67C ambient temperature without the need of any +85C heat-sink or forced cooling. The TSR 2 switching regulators provide other sig- nificant features over linear regulators, i.e. better output accuracy (2%), lower Excellent line / load regulation standby current of 2 mA and no requirement of external capacitors. The high Short circuit protection efficiency and low standby power consumption makes these regulators an ideal solution for many battery powered applications. 3-year product warranty Models Order Code Output Current Input Voltage Output Voltage Efficiency max. Range nom. typ. 90 % TSR 2-0512 1.2 VDC TSR 2-0515 3 - 5.5 VDC (5 VDC nom.) 1.5 VDC 91 % TSR 2-0518 1.8 VDC 92 % TSR 2-0525 3.8 - 5.5 VDC (5 VDC nom.) 2.5 VDC 95 % TSR 2-2412 1.2 VDC 84 % 86 % TSR 2-2415 1.5 VDC 4.6 - 36 VDC (12 VDC nom.) 87 % TSR 2-2418 1.8 VDC 2 000 mA TSR 2-2425 2.5 VDC 89 % TSR 2-2433 4.75 - 36 VDC (12 VDC nom.) 3.3 VDC 91 % TSR 2-2450 6.5 - 36 VDC (12 VDC nom.) 5 VDC 94 % TSR 2-2465 9 - 36 VDC (12 VDC nom.) 6.5 VDC 94 % TSR 2-2490 12 - 36 VDC (24 VDC nom.) 9 VDC 95 % TSR 2-24120 15 - 36 VDC (24 VDC nom.) 12 VDC 95 % TSR 2-24150 18 - 36 VDC (24 VDC nom.) 15 VDC 96 % Note - If the input is switched electromechanically, a 22 F / 50 V electrolytic capacitor at the input is recommended (12 & 24 Vin models only) Page 1 / 3 www.tracopower.com May 14, 2020TSR 2 Series, 2 A Input Specifications Input Current - At no load 5 Vin models: 1 mA typ. 12 Vin models: 1 mA typ. 24 Vin models: 1 mA typ. Recommended Input Fuse 5 Vin models: 2 000 mA (slow blow) 24 Vin models: 3 150 mA (slow blow) - 12 Vin input 1.2 Vout models: 1 600 mA (slow blow) 1.5 Vout models: 1 600 mA (slow blow) 1.8 Vout models: 1 600 mA (slow blow) 2.5 Vout models: 2 500 mA (slow blow) 3.3 Vout models: 2 500 mA (slow blow) 5 Vout models: 2 500 mA (slow blow) 6.5 Vout models: 2 500 mA (slow blow) (The need of an external fuse has to be assessed in the final application.) Input Filter Internal Capacitor Output Specifications Voltage Set Accuracy 2% max. Regulation - Input Variation (Vmin - Vmax) 0.5% max. - Load Variation (0 - 100%) 1% max. Ripple and Noise 1.2 Vout models: 50 mVp-p typ. (20 MHz Bandwidth) 1.5 Vout models: 50 mVp-p typ. 1.8 Vout models: 50 mVp-p typ. 2.5 Vout models: 50 mVp-p typ. 3.3 Vout models: 50 mVp-p typ. 5 Vout models: 50 mVp-p typ. 6.5 Vout models: 50 mVp-p typ. 9 Vout models: 75 mVp-p typ. 12 Vout models: 75 mVp-p typ. 15 Vout models: 75 mVp-p typ. Capacitive Load 1.2 Vout models: 2 500 F max. 1.5 Vout models: 2 000 F max. 1.8 Vout models: 1 600 F max. 2.5 Vout models: 1 200 F max. 3.3 Vout models: 900 F max. 5 Vout models: 600 F max. 6.5 Vout models: 470 F max. 9 Vout models: 330 F max. 12 Vout models: 270 F max. 15 Vout models: 200 F max. Minimum Load Not required Temperature Coefficient 0.02 %/K max. Start-up Time 5 ms typ. Short Circuit Protection Continuous, Automatic recovery Overload Protection Foldback Mode Output Current Limitation 400% typ. of Iout max. (5 Vin models) 180% typ. (other input models) Transient Response - Peak Variation 300 mV typ. / 500 mV max. (50% Load Step) (24 Vin models) 150 mV typ. / 250 mV max. (50% Load Step) (other models) - Response Time 150 s typ. / 200 s max. (50% Load Step) All specifications valid at nominal voltage, full load and +25C after warm-up time unless otherwise stated. Page 2 / 3 www.tracopower.com May 14, 2020