DC/DC Converters TSR-1SM Series, 1 A Features SMD-package Up to 96 % efficiency No thermal layer required Built in filter capacitors Operation temp. range -40C to +85C Short circuit protection Wide input operating range Excellent line / load regulation Low standby current 3-year product warranty The new TSR-1SM series models of step-down switching regulators have a high efficiency up to 96 % which allows full load operation up to +65C ambient temperature without the need of any heat transmission layer. Excellent output voltage accuracy (2%) and low standby current (~1 A) are features that distinguish these switching regulators from linear regulators. Models Order code Input voltage range Output voltage Output current max. TSR 1-0512SM 3.0 - 5.5 VDC 1.2 VDC Efficiency typ. @ Vin min. @ Vin max. 90.5 % 90.0 % TSR 1-0515SM 3.0 - 5.5 VDC 1.5 VDC 92.0 % 91.5 % TSR 1-0518SM 3.0 - 5.5 VDC 1.8 VDC 92.5 % 92.0 % TSR 1-0525SM 3.8 - 5.5 VDC 2.5 VDC 94.5 % 94.0 % TSR 1-2412SM 4.6 - 36 VDC* 1.2 VDC 74 % 62 % TSR 1-2415SM 4.6 - 36 VDC* 1.5 VDC 79 % 67 % TSR 1-2418SM 4.6 - 36 VDC* 1.8 VDC 82 % 70 % TSR 1-2425SM 4.6 - 36 VDC* 2.5 VDC 87 % 75 % TSR 1-2433SM 4.75 - 36 VDC* 3.3 VDC 91 % 80 % TSR 1-2450SM 6.5 - 36 VDC* 5.0 VDC 94 % 84 % TSR 1-2465SM 9.0 - 36 VDC* 6.5 VDC 94 % 89 % TSR 1-2490SM 12 - 36 VDC* 9.0 VDC 95 % 90 % TSR 1-24120SM 15 - 36 VDC* 12 VDC 95 % 92 % TSR 1-24150SM 18 - 36 VDC* 15 VDC 96 % 94 % 1A * For input voltage higher than 32 VDC an input capcitor 22 F / 50 V is required. See application notes (page 3) http://www.tracopower.com Page 1 of 3 DC/DC Converters TSR-1SM Series 1A Input Specifications Maximum input current (at Vin min. and 1 A output current) 1 A No load input current Reflected ripple current 1 mA typ. 150 mA Input filter internal capacitor Output Specifications Voltage set accuracy 2 % Regulation - Input variation 0.2 % - Load variation (0 - 100 %) 0.6 % - Load variation (10 - 90 %) 0.3 % Minimum load not required Ripple and noise (20 MHz Bandwidth) Vout < 8 VDC: 50 mVp-p typ. Vout > 8 VDC: 75 mVp-p typ. Temperature coefficient 0.015 % / C max. Dynamic load response 50% load change (upper half) 200 mV max. peak variation 250 s max. response time Startup rise time 10 % to 90 % Vout 5 ms Short circuit protection continuous, automatic recovery Current limitation TSR 1-05xxSM models: at 4.8 A typ. other models: at 2.5 A typ. Capacitive load 470 F max. General Specifications Temperature ranges - Operating -40C to +85C - Max. casing temperature 105C - Storage -55C to +125C Derating 2.5 %/K above 65C Thermal shock & vibration acc. MIL-STD-810F Humidity (non condensing) 5 - 95 % rel H max. Reliability, calculated MTBF (MIL-HDBK-217F, at +25C, ground benign) >12 Mio. h Isolation voltage none Switching frequency (pulse width modulation) TSR 1-05xxSM models: 1200 kHz other models: 500 kHz Environmental compliance - Reach www.tracopower.com/products/reach-declaration.pdf - RoHS RoHS directive 2011/65/EU Physical Specifications Casing material non-conductive plastic Package 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. 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 3 DC/DC Converters TSR-1SM Series 1A Applications notes mm (inches) Outline Dimensions For input voltage higher than 32 VDC (max. 36 VDC) +Vin TSR 1 C1 Input C1 = 22 F / 50 V +Vout Load GND Outline Dimensions (0.30) (0.10) (0.20) Pin-Out 10 7 9 6 5.08 (0.10) 2.54 (0.20) (0.10) 5 1 top view 1 2.54 (0.10) (0.47) 6 11.8 7 (0.37) 9 9.3 10 10.16 (0.40) 9.7 (0.38) (0.51) 2.54 12.92 9.3 (0.60) (0.37) 15.2 2.54 5.08 1.5 (0.006) 7.6 0.30 (0.01) Solder Pad Dimension 1 +Vin 5 +Vout 6 nc 7 GND 9 GND 10 nc nc = no internal connection 5 10.16 (0.40) 0.5 (0.02) 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 without notice Specifications can be changed without notice! Make sure you are using the latest documentation, downloadable at www.tracopower.com Rev. November 11. 2017 www.tracopower.com Page 3 of 3