The Traco Power TSR 2N and TSR 3N Series are non-isolated, step-down switching regulators designed as efficient drop-in replacements for traditional TO-220 linear regulators. The TSR 2N delivers up to 2A, while the TSR 3N provides up to 3A of output current. Both series operate over a wide input voltage range of 4.6 to 36 VDC and offer output voltages from 1.2 to 15 VDC. Their compact SIP-3 plastic package (14 × 7.6 × 10.2 mm) and high efficiency—up to 95%—enable full-load operation at ambient temperatures up to +95°C without the need for heat sinks or forced cooling.
These regulators incorporate several protection features, including short circuit protection, current limitation, and under-voltage lockout, enhancing their reliability in various applications. Their excellent line and load regulation ensures stable output under varying input conditions and loads. The design focuses on cost efficiency, making them suitable for high-volume projects where reducing production costs without compromising performance is essential.
The TSR 2N and TSR 3N series are well-suited for applications in industrial automation, instrumentation, and distributed power architectures. Their ability to operate efficiently over a broad temperature range and input voltage spectrum makes them versatile solutions for systems requiring reliable point-of-load regulation. In addition, their compatibility with existing TO-220 footprints simplifies the upgrade process from linear to switching regulators, offering improved efficiency and thermal performance without significant redesign efforts.   To learn more, visit tracopower.com.