
Isolated DC-DC converter, 10.8-13.2V input, 5V/50mA output, 0.25W, 78% efficiency, -40°C to +105°C operating temperature.
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The QT8B_1205S3UP is a compact, galvanically isolated DC-DC converter module designed for point-of-load power applications. It delivers a regulated 5V DC output at 50mA (0.25W) from a nominal 12V DC input source, accepting a voltage range of 10.8V to 13.2V (±10% tolerance). The module incorporates a high-frequency switching topology to achieve a typical efficiency of 78%. Isolation is provided to withstand voltage stress between input and output, enhancing system safety and reducing ground loop noise. This module operates reliably across a wide temperature range, from -40°C to +105°C, making it suitable for harsh industrial environments. Internal protection features include short-circuit protection and over-temperature shutdown, ensuring robust and reliable operation. The QT8B_1205S3UP offers a cost-effective and space-saving solution for powering isolated analog and digital circuits.