ISL6141CB

Hot Swap Controllers Overview

The ISL6141CB is an 8-pin negative voltage hot plug controller designed for safe board insertion and removal from live backplanes. It operates within a supply voltage range of -20V to -80V, with an absolute maximum rating of -100V. The device limits inrush current by controlling the gate voltage of an external N-channel pass transistor. It features programmable over-voltage protection (OVP) and under-voltage lock-out (UVLO) with approximately 135mV hysteresis. An IntelliTrip electronic circuit breaker provides short-circuit protection, limiting output current for 600µs before shutdown. A fast hard fault shutdown triggers at four times the current limit value, initiating a single retry soft-start.

Hot Swap Controllers Feature Summary

• IntelliTrip electronic circuit breaker distinguishes between over-current and hard fault conditions
• Programmable inrush current control via external N-channel pass transistor gate voltage
• Active low PWRGD signal for direct power module enablement
• Automatic single retry soft-start following hard fault shutdown

Hot Swap Controllers Applications

• -48V telecommunications systems
• VoIP equipment
• Live backplane board insertion applications

Hot Swap Controllers Procurement Notes

Verify component authenticity through authorized Renesas or Intersil distributors. Confirm package integrity and pin alignment against the 8-SOIC specification. Check manufacturing date codes as this part may be discontinued. Ensure environmental compliance status matches project requirements, noting RoHS non-compliance data. Validate that external components meet the voltage ratings required for the -80V operating range.

Hot Swap Controllers Selection Notes

Select the ISL6141CB for negative voltage hot swap applications requiring precise inrush control. Choose this model when an active low power good signal is necessary for system sequencing. Consider the ISL6151 if an active high power good output is preferred instead. Ensure the external N-channel MOSFET supports the -100V absolute maximum rating. Verify that the application environment stays within the specified 0°C to 70°C operating temperature range.

Hot Swap Controllers Part Context

This component belongs to the IntelliTrip family of hot plug controllers manufactured by Intersil, now part of Renesas Electronics. It serves as a dedicated solution for protecting sensitive electronics during maintenance or expansion in live systems. The device simplifies design by integrating complex timing and protection logic into a compact surface-mount package.

Hot Swap Controllers Replacement Considerations

The ISL6151 is a confirmed functional substitute offering identical protection features but with an active high PWRGD output instead of active low.

Hot Swap Controllers FAQ

How does the IntelliTrip circuit breaker handle faults?

It distinguishes between over-current and hard faults. Over-current limits output for 600µs before shutdown, while hard faults trigger immediate shutdown followed by a single retry.

What is the UVLO threshold behavior?

The device includes under-voltage lock-out with approximately 135mV of hysteresis, which equals roughly 4.6V of hysteresis at the main power supply input.