MC34268DTG

Overview

The MC34268DTG is a low-dropout linear regulator manufactured by onsemi, designed specifically for SCSI-2 active termination applications. It provides a fixed output voltage of 2.85 V with a maximum output current capability of 800 mA. The device operates within an input voltage range up to 15 V and features a typical dropout voltage of 950 mV at full load. It is housed in a DPAK surface-mount package and supports operation across a temperature range of 0°C to +125°C.

Feature Summary

• Fixed 2.85 V output optimized for SCSI-2 bus termination requirements
• High current drive capability supporting up to 800 mA loads
• Low dropout performance ensuring stable regulation under varying input conditions

Applications

• SCSI-2 active terminator circuits
• Low voltage power supply regulation
• Bus termination networks requiring precise voltage levels

Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm RoHS compliance details as specifications may vary by manufacturing batch. Ensure proper handling procedures are followed during storage and assembly to maintain device integrity given the age of the product line.

Selection Notes

Select this component when designing legacy SCSI-2 systems requiring a dedicated 2.85 V regulator. Consider the DPAK package constraints for thermal management in high-current scenarios. Evaluate alternative modern regulators if new designs do not strictly require SCSI-2 compatibility or specific legacy form factors.

Part Context

This part belongs to the MC34268 series of specialized voltage regulators. It is functionally related to variants such as MC34268D and MC34268DR2G, differing primarily in packaging (DPAK vs SOIC-8) and reel/cut-tape options. The series is categorized under PMIC - Power Management ICs within onsemi's portfolio.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The MC34268 series is listed as obsolete or end-of-life; engineers should consult official obsolescence notices for recommended upgrades.