TSRN-1 Series 1A step-down switching regulators with a wide input voltage range of up to 42 Vdc and a high efficiency of up to 95% which allows full load operation without the need for a heatsink or forced air cooling. These TSRN-1 Series 1A step-down switching regulators are suitable for positive and negative output circuits (please refer to table for additional data). Excellent line and load regulation and a low standby current makes these TSRN-1 switching regulators ideal for use in energy sensitive applications.

Input voltage range up to 42 VDC
Built in filter capacitors
No heat-sink required
Over-temperature and short circuit protection
Low standby current: 1 mA for <= 3.3 Vdc output models, 3 mA for >= 5.0 Vdc ouput models
SIP package fits existing TO-220 footprint
Pin compatible with LMxx linear regulators

Part numbers: TSRN 1-xxxx have straight pins
Part numbers: TSRN 1-xxxxA have angular pins
MTBF: MIL-HDBK-217 @ +25°C
Derating: 2.7 %/K above +70°C
For input voltages higher then 36 Vdc an input capacitor 22 μF/ 50 V is required

This switching regulator offers a high-performance alternative to less efficient linear regulators. With an output voltage of 15V DC and a current capacity of up to 1A, it provides stable performance for a range of applications. Its compact dimensions of 11.7mmx7.5mmx10.2mm allow for easy integration into smaller spaces, while the wide input voltage range of 16.5V to 42V DC makes it suitable for precise electronic tasks.

• High efficiency of up to 96% minimises thermal management needs
• Compact SIP package facilitates integration in constrained areas
• Low standby current of around 2mA contributes to energy savings
• Built-in over-temperature protection enhances safety
• Output stability is assured with low ripple of only 75mV Pk-Pk

• Powering electronic circuits in automation
• Suitable for energy-sensitive in industrial environments
• Ideal for battery-operated devices that require DC-DC conversion
• Used in systems where minimised heat generation is essential

Yes, it can perform up to +85°C with derating.

It offers good load regulation within ±0.4%.

Yes, it can be utilised in both positive and negative configurations.

No, it functions without the need for external capacitors.