MC34653EF

Hot Swap Controllers Overview

The MC34653EF is a highly integrated negative voltage hot swap controller designed for -48V applications. It features an internal power MOSFET and supports a maximum output current of 1A. The device operates within a supply voltage range of -74V to -39V and draws a typical supply current of 900 µA. It is housed in an 8-SOIC package with a width of 3.90mm. The component functions across a temperature range of -40°C to 85°C and includes programmable limit and fault timeout features.

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 and undervoltage lockout mechanisms
• Offers thermal limiting to protect against overheating conditions

Hot Swap Controllers Applications

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

Hot Swap Controllers Procurement Notes

Verify the obsolete status of this component before design finalization. Confirm that the 8-SOIC package dimensions match your PCB footprint requirements. Ensure the -48V operating range aligns with your system's power architecture. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the internal switch capability meets your load current specifications without external components.

Hot Swap Controllers Selection Notes

Select this controller for single-channel -48V hot swap applications requiring built-in protection. The internal MOSFET eliminates the need for external switching elements, reducing bill of materials cost. Consider the 1A current limit when sizing for load requirements. The 8-SOIC package offers a surface-mount solution suitable for space-constrained designs. Verify compatibility with system fault handling logic due to the auto-retry feature.

Hot Swap Controllers Part Context

This part belongs to the MC34653 family of negative voltage hot swap controllers manufactured by NXP USA Inc. It serves as a specialized power management IC for protecting circuits during live insertion and removal. The device integrates control logic with power switching capabilities to ensure safe operation in high-voltage DC environments common in telecom and industrial sectors.

Hot Swap Controllers Replacement Considerations

The MCZ34653EFR2 is a documented variant within the same product family. Verify pinout and electrical parameter equivalence before substitution. Confirm package compatibility and thermal performance characteristics. Review datasheet differences regarding specific feature enablement or timing parameters.