NCP1091DRG

Overview

The NCP1091DRG is a hot swap voltage controller manufactured by onsemi, designed for safe insertion and removal of circuit boards under power. It operates within a supply voltage range of 0 V to 57 V and supports a single channel with a current limit of 500 mA. The device functions across an operating temperature range from -40°C to +85°C. It is housed in an SOIC-8 surface-mount package and includes power failure detection capabilities.

Feature Summary

• Enables controlled insertion and removal of live circuits to prevent system damage
• Integrates power failure detection for enhanced system reliability
• Provides precise current limiting to protect downstream components

Applications

• Telecommunications infrastructure equipment
• Industrial control systems requiring hot-swap capability
• Server and storage backplanes

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance details as specified in official documentation. Ensure handling procedures account for moisture sensitivity classification during storage and assembly processes.

Selection Notes

Evaluate input voltage requirements against the maximum 57 V limit. Assess thermal management needs for the SOIC-8 package within the specified temperature range. Consider the 500 mA current limit relative to load demands and ensure compatibility with system hot-swap protocols.

Part Context

This component belongs to the NCP1091 series of hot swap controllers. It serves as a power management integrated circuit (PMIC) solution for protecting sensitive electronics during board insertion events. The device is part of onsemi's portfolio focused on PoE and LAN solutions.

Replacement Considerations

The manufacturer has issued a discontinuance notification dated January 17, 2024. Verify availability of alternative sources or compatible successor devices from onsemi or other manufacturers that meet the same electrical specifications and pinout requirements.