PM-DB2725EX

The PM-DB2725EX is an isolated DC-DC converter module from Holt Integrated Circuits, part of the PM-DB series in a metal DIP (M-DIP) package, intended for high-reliability power conversion. It accepts a nominal input voltage common in aerospace and industrial power buses, delivering a regulated isolated output with high efficiency and low output noise. Galvanic isolation protects against ground loops and transients, while internal protection features such as over-temperature and short-circuit shutdown ensure sustained operation in harsh conditions. The metal package enhances thermal dissipation and resistance to mechanical shock and vibration, and the EX suffix typically indicates an extended temperature range from -55°C to +125°C, aligning with military and avionics environmental requirements.

Typical deployments include powering MIL-STD-1553 data bus terminals, precision analog front-ends, isolated sensor interfaces, and embedded control circuits in avionics, defense electronics, satellite payloads, and industrial automation. The module provides localized point-of-load regulation on isolated rails, reducing cross-talk in mixed-signal boards. For procurement, designers should assess product lifecycle status and availability; Holt’s long-standing presence in hi-rel markets mitigates obsolescence risk, but program longevity often warrants advance lifecycle planning. Military or extended-grade screening, lot traceability, and certificates of conformance are standard procurement requirements for defense and aerospace applications, ensuring compliance with applicable quality standards.