LTC1421IG#PBF

Hot Swap Controllers Overview

The LTC1421IG#PBF is a Hot Swap Controller manufactured by Analog Devices Inc., designed to allow safe board insertion and removal from a live backplane system. It utilizes external N-channel pass transistors to ramp up board supply voltages at a programmable rate, protecting against inrush currents. The device features two high-side switch drivers controlling N-channel gates for supply voltages ranging from 3V to 12V. It includes a programmable electronic circuit breaker, system reset and power good control outputs, and connection inputs that detect board insertion or removal events.

Hot Swap Controllers Feature Summary

• Enables safe hot-swapping of boards into live backplane systems without powering down the main system
• Provides programmable electronic circuit breaker protection against overcurrent conditions
• Integrates system reset and power good control outputs for reliable state management

Hot Swap Controllers Applications

• PCI slot hot-swap implementations allowing peripheral insertion while system power remains on
• Backplane systems requiring safe board insertion and removal protocols
• Industrial equipment with modular board architectures needing controlled power-up sequencing

Hot Swap Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the IG package variant matches your PCB footprint requirements. Check current availability status as distribution may be limited. Ensure external N-channel MOSFETs are selected to handle the required voltage and current ratings for your specific application design.

Hot Swap Controllers Selection Notes

Select this controller when designing systems requiring safe insertion and removal of boards from live backplanes. It is suitable for applications utilizing external N-channel pass transistors for voltage ramping. Consider its compatibility with supply voltages between 3V and 12V. Evaluate the need for its integrated programmable circuit breaker and connection detection features for your specific safety and monitoring requirements.

Hot Swap Controllers Part Context

This component belongs to the LTC1421 family of Hot Swap Controllers from Analog Devices. These devices are part of the Power Management ICs (PMIC) category, specifically focused on power distribution and protection. The family is designed to manage the risks associated with inserting and removing circuit boards from energized systems, ensuring system integrity and component safety during these operations.

Hot Swap Controllers FAQ

What type of external transistors does the LTC1421 control?

The LTC1421 controls external N-channel pass transistors using its two high-side switch drivers to manage the ramp-up of board supply voltages.

How does the device detect board insertion or removal?

It uses dedicated connection inputs that detect physical board insertion or removal events to trigger appropriate control sequences.