TSR1 TRACOPOWER
Document overview
- PDF pages: 3
Technical content
Page 1
Non-Isolated DC/DC Converter (POL)

- Up to 96% efficiency – No heat-sink required
- Pin compatible with LMxx linear regulators
- SIP-package fits existing TO-220 footprint
The TSR 1 series step-down switching regulators are drop-in replacement for
- Built in filter capacitors
inefficient 78xx linear regulators. A high efficiency up to 96% allows full load
- Operation temp. range –40°C to +85°C operation up to +60°C ambient temperature without the need of any heat-sink
or forced cooling. The TSR 1 switching regulators provide other significant fea-
- Short circuit protection
tures over linear regulators, i.e. better output accuracy (±2%), lower standby
- Wide input operating range
current of 2 mA and no requirement of external capacitors. The high efficiency and low standby power consumption makes these regulators an ideal solution
- Excellent line / load regulation
for many battery powered applications.
- Low standby current
- 3-year product warranty
Models
| Order Code | Output Current max. | Input Voltage Range | Output Voltage nom. | Efficiency typ. |
|---|---|---|---|---|
| TSR 1-2412 TSR 1-2415 TSR 1-2418 TSR 1-2425 TSR 1-2433 | 1'000 mA | 4.6 - 36 VDC (9 VDC nom.) | 1.2 VDC 1.5 VDC 1.8 VDC 2.5 VDC 3.3 VDC | 74 % (at Vin min.) 78 % (at Vin min.) 82 % (at Vin min.) 87 % (at Vin min.) 91 % (at Vin min.) |
| 4.75 - 36 VDC (9 VDC nom.) | ||||
| TSR 1-2450 TSR 1-2465 | 6.5 - 36 VDC (12 VDC nom.) | 5 VDC 6.5 VDC | 94 % (at Vin min.) 93 % (at Vin min.) | |
| 9 - 36 VDC (12 VDC nom.) | ||||
| TSR 1-2490 TSR 1-24120 TSR 1-24150 | 12 - 36 VDC (24 VDC nom.) | 9 VDC 12 VDC 15 VDC | 95 % (at Vin min.) 95 % (at Vin min.) 96 % (at Vin min.) | |
| 15 - 36 VDC (24 VDC nom.) | ||||
| 18 - 36 VDC (24 VDC nom.) |
Note - For input voltage higher than 32 VDC an external input capacitor (22 µF) is required.
November 30, 2022
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Page 2
Input Specifications
Input Current
- At no load
- At full load
Reflected Ripple Current Recommended Input Fuse - 9 Vin input
- 12 Vin input
- 24 Vin input
Input Filter
Output Specifications
Voltage Set Accuracy Regulation
- Input Variation (Vmin - Vmax) - Load Variation (10 - 100%)
Ripple and Noise (20 MHz Bandwidth)
Capacitive Load Minimum Load Temperature Coefficient Start-up Overshoot Voltage Short Circuit Protection Output Current Limitation Transient Response
- Peak Variation - Response Time
EMC Specifications
EMI Emissions
- Conducted Emissions - Radiated Emissions
General Specifications
Relative Humidity Temperature Ranges
- Operating Temperature - Storage Temperature
Power Derating
- High Temperature
Over Temperature
- Protection Mode
Protection Switch Off
- Measurement Point
Cooling System
9 Vin models: 1 mA typ. 12 Vin models: 1 mA typ. 24 Vin models: 1 mA typ. 9 Vin models: 1'000 mA max. 12 Vin models: 1'000 mA max. 24 Vin models: 1'000 mA max.
(at Vin min.) 150 mAp-p typ.
1.2 Vout models: 630 mA (slow blow) 1.5 Vout models: 800 mA (slow blow) 1.8 Vout models: 800 mA (slow blow) 2.5 Vout models: 1'250 mA (slow blow) 3.3 Vout models: 1'250 mA (slow blow) 5 Vout models: 1'600 mA (slow blow) 6.5 Vout models: 1'250 mA (slow blow) 9 Vout models: 1'250 mA (slow blow) 12 Vout models: 1'600 mA (slow blow) 15 Vout models: 1'600 mA (slow blow)
(The need of an external fuse has to be assessed in the final application.) Internal Capacitor
±2% max. 0.2% max. 0.6% max. (1.2 & 1.5 Vout models) 0.4% max. (other models)
9 Vin models: 50 mVp-p typ. 12 Vin models: 50 mVp-p typ. 24 Vin models: 75 mVp-p typ.
470 µF max. Not required ±0.015 %/K max. 1% max. Continuous, Automatic recovery 250% typ. of Iout max. 150 mV typ. / 200 mV max. (50% Load Step) 250 µs typ. / 350 µs max. (50% Load Step)
EN 55032 class A (with external filter) EN 55032 class A (with external filter)
External filter proposal: www.tracopower.com/overview/tsr1
95% max. (non condensing) –40°C to +85°C –55°C to +125°C 2.4 %/K above 60°C
See application note: www.tracopower.com/overview/tsr1
150°C typ. (Automatic recovery) Internal IC temperature Natural convection (20 LFM)
All specifications valid at nominal voltage, resistive full load and +25°C after warm-up time, unless otherwise stated.
November 30, 2022
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Page 3
Switching Frequency
Insulation System Reliability
- Calculated MTBF
Washing Process
400 - 600 kHz (PWM) 500 kHz typ. (PWM) Non-isolated 25'710'000 h (MIL-HDBK-217F, ground benign) Allowed (hermetical product)
See Cleaning Guideline:
Environment
- Vibration - Thermal Shock
Housing Material Potting Material Pin Material Pin Foundation Plating Pin Surface Plating Housing Type Mounting Type Connection Type Footprint Type Soldering Profile Weight Environmental Compliance - REACH Declaration
- RoHS Declaration
Supporting Documents
Overview Link (for additional Documents)
Outline Dimensions


© Copyright 2022 Traco Electronic AG
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 Nickel (2 - 3 µm) Tin (3 - 5 µm), matte Plastic Case PCB Mount THD (Through-Hole Device) SIP3 265°C / 10 s max. 1.9 g www.tracopower.com/info/reach-declaration.pdf REACH SVHC list compliant REACH Annex XVII compliant www.tracopower.com/info/rohs-declaration.pdf Exemptions: 7a, 7c-I (RoHS exemptions refer to the component concentration only, not to the overall concentration in the product (O5A rule). The SCIP number is provided on request.)
www.tracopower.com/overview/tsr1
| Pinout | |
| Pin | Function |
| 1 | +Vin |
| 2 | GND |
| 3 | +Vout |
Specifications can be changed without notice.
Rev. November 30, 2022
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