NCP1091DG

Overview

The NCP1091DG is a hot-swap voltage controller manufactured by onsemi, designed for safe insertion and removal of circuit boards from live backplanes. 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 of -40°C to +85°C and is housed in an SOIC-8 surface-mount package. It includes power failure detection capabilities.

Feature Summary

• Provides controlled power-up sequencing to prevent bus collapse during board insertion
• Integrates power failure detection for system protection
• Supports safe hot-plugging operations in electronic systems

Applications

• Hot-swap controllers for server backplanes
• Power management for telecommunications equipment
• Industrial control system board insertion protection

Procurement Notes

Verify the specific suffix 'DG' against official datasheets to confirm package and tape/reel specifications. Confirm end-of-life status as discontinuance notifications may apply. Ensure compatibility with existing thermal and electrical design constraints before procurement.

Selection Notes

Select this component when designing systems requiring robust hot-swap protection for single-channel applications. Verify that the 57 V maximum input voltage and 500 mA current limit meet the target load requirements. Consider the SOIC-8 package for space-constrained PCB layouts.

Part Context

This part belongs to the NCP1091 series of hot-swap controllers from onsemi. These devices are categorized under PMIC - Power Management ICs and PoE/LAN Solutions. The series is designed to manage power delivery safely during dynamic connection events.

Replacement Considerations

Check for direct pin-compatible substitutes within the same family or equivalent performance alternatives. Verify availability due to potential discontinuance status.