Document
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
• Built in filter capacitors • Operating temperature range -40°C to
+85°C
• Excellent line / load regulation • Short circuit protection • 3-year product warranty
The new TSR 2 series step-down switching regulators are drop-in replacement for inefficient LMxx linear regulators. A high efficiency up to 96% allows full load operation up to +67°C ambient temperature without the need of any heat-sink or forced cooling. The TSR 2 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. The high efficiency and low standby power consumption makes these regulators an ideal solution for many battery powered applications.
Models
Order Code
TSR 2-0512 TSR 2-0515 TSR 2-0518 TSR 2-0525 TSR 2-2412 TSR 2-2415 TSR 2-2418 TSR 2-2425 TSR 2-2433 TSR 2-2450 TSR 2-2465 TSR 2-2490 TSR 2-24120 TSR 2-24150
Output Current max.
2'000 mA
Input Voltage Range
3 - 5.5 VDC (5 VDC nom.)
3.8 - 5.5 VDC (5 VDC nom.)
4.6 - 36 VDC (12 VDC nom.)
4.75 - 36 VDC (12 VDC nom.) 6.5 - 36 VDC (12 VDC nom.) 9 - 36 VDC (12 VDC nom.) 12 - 36 VDC (24 VDC nom.) 15 - 36 VDC (24 VDC nom.) 18 - 36 VDC (24 VDC nom.)
Output Voltage nom.
1.2 VDC 1.5 VDC 1.8 VDC 2.5 VDC 1.2 VDC 1.5 VDC 1.8 VDC 2.5 VDC 3.3 VDC 5 VDC 6.5 VDC 9 VDC 12 VDC 15 VDC
Efficiency typ. 90 % 91 % 92 % 95 % 84 % 86 % 87 % 89 % 91 % 94 % 94 % 95 % 95 % 96 %
Note - If the input is switched electromechanically, a 22 µF / 50 V electrolytic capacitor at the input is recommended (12 & 24 Vin models only)
www.tracopower.com
November 30, 2022
Page 1 / 4
TSR 2 Series, 2 A
Input Specifications
Input Current
- At no load
Recommended Input Fuse - 12 Vin input
Input Filter
Output Specifications
Voltage Set Accuracy
Regulation
- Input Variation (Vmin - Vmax)
- Load Variation (0 - 100%)
Ripple and Noise
(20 MHz Bandwidth)
Capacitive Load
Minimum Load Temperature Coefficient Start-up Time Short Circuit Protection Overload Protection Output Current Limitation
Transient Response
- Peak Variation
- Response Time
General Specifications
Relative Humidity
Temperature Ranges
- Operating Temperature
- Case Temperature
- Storage Temperature
Power Derating
- High Temperature
5 Vin models: 1 mA typ. 12 Vin models: 1 mA typ. 24 Vin models: 1 mA typ.
5 Vin models: 2'000 mA (slow blow) 24 Vin models: 3'150 mA (slow blow) 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.) Internal Capacitor
±2% max. 0.5% max. 1% max. 5 Vin models: 50 mVp-p typ. 12 Vin models: 50 mVp-p typ. 24 Vin models: 75 mVp-p typ. 1.2 Vout models: 2'500 µF max. 1.5 Vout models: 2'000 µF max. 1.8 Vout models: 1'600 µF max. 2.5 Vout models: 1'200 µF max. 3.3 Vout models: 900 µF max. 5 Vout models: 600 µF max. 6.5 Vout models: 470 µF max. 9 Vout models: 330 µF max. 12 Vout models: 270 µF max. 15 Vout models: 200 µF max. Not required ±0.02 %/K max. 5 ms typ. Continuous, Automatic recovery Foldback Mode 400% typ. of Iout max. (5 Vin models) 180% typ. (other input models) 300 mV typ. / 500 mV max. (50% Load Step) (24 Vin models) 150 mV typ. / 250 mV max. (50% Load Step) (other models) 150 µs typ. / 200 µs max. (50% Load Step)
95% max. (non condensing) –40°C to +85°C +105°C max. –55°C to +125°C Depending on model See application note: www.tracopower.com/overview/tsr2
All specifications valid at nominal voltage, resistive full load and +25°C after warm-up time, unless otherwise stated.
www.tracopower.com
November 30, 2022
Page 2 / 4
Over Temperature Protection Switch Off Cooling System Switching Frequency
Insulation System Reliability Washing Process
- Protection Mode - Measurement Point
- Calculated MTBF
Environment
Housing Material Potting Material Pin Material Pin Foundation Plating Pin Surface Plating Housing Type Mounting Type Connection Type Footprint Type Soldering Profile Weight
- Vibration - Thermal Shock
Environmental Compliance - REACH Declaration
- RoHS Declaration
Supporting Documents
Overview Link (for additional Documents)
TSR 2 Series, 2 A
See Cleaning Guideline:
150°C typ. (Automatic recovery) Internal IC temperature Natural convection (20 LFM) 1200 kHz typ. (PWM) (5 Vin models) 410 kHz typ. (PWM) (other models) Non-isolated 13'520'000 h (MIL-HDBK-217F, ground benign) Allowed (hermetical product) www.tracopower.com/info/cleaning.pdf MIL-STD-810F MIL-STD-810F
Non-conductive Plastic (UL 94 V-0 rated) Silicone (UL 94 V-0 rated) Copper Nicke.