MCZ34653EF

Hot Swap Controllers Overview

The MCZ34653EF is a single-channel hot swap controller designed for -48V applications, manufactured by NXP USA Inc. It integrates an internal power MOSFET and supports a supply voltage range of -74V to -39V. The device delivers a maximum output current of 1A with a supply current of 900 µA. It operates within a temperature range of -40°C to 85°C and is housed in an 8-SOIC package (0.154" width). Key programmable features include current limiting and fault timeout.

Hot Swap Controllers Feature Summary

• Integrates an internal power MOSFET for compact hot swap control
• Provides automatic retry functionality upon fault clearance
• Includes overvoltage protection (OVP) and thermal shutdown capabilities
• Features under-voltage lockout (UVLO) for stable operation

Hot Swap Controllers Applications

• -48V telecommunications infrastructure systems
• Industrial equipment requiring safe board insertion
• Telecom backplane power distribution units

Hot Swap Controllers Procurement Notes

Verify component status as the MCZ34653EF is listed as obsolete or discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market suppliers. Ensure compatibility with existing PCB footprints and design requirements before procurement. Check for end-of-life notices and recommended replacement parts from NXP to ensure long-term project viability.

Hot Swap Controllers Selection Notes

Select this component for -48V systems requiring integrated hot swap protection without external MOSFETs. Consider the 8-SOIC package constraints and thermal performance. Evaluate if the 1A output current meets load requirements. Verify that the internal switch characteristics align with system inrush and steady-state needs. Assess obsolescence risks against product lifecycle plans.

Hot Swap Controllers Part Context

The MCZ34653EF belongs to the MCZ34653 family of negative voltage hot swap controllers. It shares functional similarities with other NXP devices in this series but is specific to -48V telecom environments. The EFR2 suffix variant exists, indicating potential packaging differences. This part represents a legacy solution for robust power management in communication hardware.

Hot Swap Controllers Replacement Considerations

Public confirmed substitute part numbers are not explicitly documented in the provided source material. Consult NXP official documentation for direct replacements due to the obsolete status.