TSRN 1-2490A

Non-Isolated DC/DC Converter (POL) TSRN 1 Series, 1 A SIP-package fits existing TO-220 footprint Suitable for positive & negative output circuit Pin compatible with LMxx linear regulators The new TSRN 1 series step-down switching regulators are drop-in replace- Built in filter capacitors ment for inefficient 78xx linear regulators. A high efficiency up to 95% allows Operation temp. range 40C to +85C full load operation up to +70C (+85C with derating) ambient temperature without the need of any heat-sink or forced air cooling. No heat-sink required The TSRN-1 switching regulators provide other significant features over linear Over-temperature & short circuit regulators, i.e. better output accuracy (2%), lower standby current of ~2 mA protection and no requirement of external capacitors. They are suitable for positive or neg- ative output circuits. The high efficiency and low standby power consumption Wide input range up to 36 VDC make these regulators an ideal solution for energy sensitive applications. Excellent line/load regulation 3-year product warranty Models Order Code Output Current Input Voltage Output Voltage Efficiency max. Range nom. typ. TSRN 1-2415 1.5 VDC 77 % (at Vin min.) TSRN 1-2418 1.8 VDC 81 % (at Vin min.) 4.6 - 36 VDC (12 VDC nom.) TSRN 1-2425 2.5 VDC 84 % (at Vin min.) TSRN 1-2433 3.3 VDC 88 % (at Vin min.) 1 000 mA 92 % (at Vin min.) TSRN 1-2450 6.5 - 36 VDC (12 VDC nom.) 5 VDC TSRN 1-2465 8 - 36 VDC (12 VDC nom.) 6.5 VDC 93 % (at Vin min.) 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 - Models with angular pin version (see outline dimensions) Note - For external circuit proposal for negative output voltage, refer to application note: www.tracopower.com/overview/tsrn1 Page 1 / 4 www.tracopower.com October 1, 2021TSRN 1 Series, 1 A Input Specifications Input Current - At no load 12 Vin models: 2 mA typ. 24 Vin models: 3 mA typ. Reflected Ripple Current 12 Vin models: 100 mAp-p typ. 24 Vin models: 100 mAp-p typ. Recommended Input Fuse 12 Vin models: 2 000 mA (slow blow) 24 Vin models: 2 000 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) 0.2% max. - Load Variation (10 - 100%) 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.) Ripple and Noise 24 Vin models: 75 mVp-p max. (20 MHz Bandwidth) 1.5 Vout models: 50 mVp-p max. 1.8 Vout models: 50 mVp-p max. 2.5 Vout models: 50 mVp-p max. 3.3 Vout models: 50 mVp-p max. 5 Vout models: 50 mVp-p max. 6.5 Vout models: 50 mVp-p max. 75 mVp-p max. 9 Vout models: Capacitive Load 470 F max. Minimum Load Not required Temperature Coefficient 0.015 %/K max. Start-up Time 5 ms typ. Start-up Overshoot Voltage 1% max. Short Circuit Protection Continuous, Automatic recovery Output Current Limitation 200% typ. of Iout max. Transient Response - Peak Variation 150 mV typ. / 250 mV max. (50% Load Step) - Response Time 250 s typ. / 350 s max. (50% Load Step) General Specifications Relative Humidity 95% max. (non condensing) Temperature Ranges - Operating Temperature 40C to +85C - Case Temperature +100C max. - Storage Temperature 55C to +125C Power Derating - High Temperature See application note: www.tracopower.com/overview/tsrn1 Over Temperature - Protection Mode 170C typ. (Automatic recovery) Protection Switch Off - Measurement Point Internal IC temperature Cooling System Natural convection (20 LFM) Switching Frequency 240 - 360 kHz (PWM) (1.5 - 3.3 Vout models) 464 - 696 kHz (PWM) (5 - 15 Vout models) Insulation System Non-isolated Reliability - Calculated MTBF 20 000 000 h (MIL-HDBK-217F, ground benign) Environment - Vibration MIL-STD-810F EN 61373 - Mechanical Shock MIL-STD-810F EN 61373 - Thermal Shock MIL-STD-810F All specifications valid at nominal voltage, resistive full load and +25C after warm-up time, unless otherwise stated. Page 2 / 4 www.tracopower.com October 1, 2021