LTC4229IG#PBF

Hot Swap Controllers Overview

The LTC4229IG#PBF is a single-channel ideal diode and hot swap controller manufactured by Analog Devices Inc. It operates within a supply voltage range of 2.9 V to 18 V with a typical supply current of 2 mA. The device is housed in a 24-SSOP surface-mount package, measuring 5.30 mm in width, and supports an operating temperature range from -40°C to 85°C. Key electrical features include overvoltage protection (OVP), undervoltage lockout (UVLO), and programmable automatic retry or latch-off fault behaviors.

Hot Swap Controllers Feature Summary

• Controls two external N-channel MOSFETs to provide ideal diode and hot swap functionality for a single power rail
• Enables safe insertion and removal of circuit boards on live backplanes through controlled surge current limiting
• Provides fast peak fault current limiting within one microsecond using adjustable foldback current limits
• Configurable for automatic retry or latch-off operations following fault conditions via pin selection

Hot Swap Controllers Applications

• Redundant power systems
• Power hold-up circuits
• High availability server infrastructure
• Telecommunications and network equipment
• Power supply prioritizer designs

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'IG' indicates the industrial temperature grade (-40°C to 85°C) and 'PBF' denotes lead-free compliance when sourcing. Confirm the 24-SSOP package dimensions match your PCB footprint requirements. Ensure the external MOSFET selection aligns with the controller's drive capabilities and thermal constraints for your specific application load.

Hot Swap Controllers Selection Notes

Select this component when designing single-rail redundancy or hot swap interfaces requiring precise control over external N-channel MOSFETs. It is suitable for applications needing rapid fault response and configurable recovery modes. Consider the SSOP package size if board space is limited compared to QFN alternatives. Verify that the input voltage range covers your system's operational requirements.

Hot Swap Controllers Part Context

This part belongs to the LTC4229 family of ideal diode and hot swap controllers. It serves as a low-loss replacement for Schottky diodes in ORing configurations while managing inrush currents during board insertion. The IG variant specifically targets industrial environments, offering robust performance across a wide temperature spectrum compared to commercial grade options.

Hot Swap Controllers Replacement Considerations

LTC4229IUFD#PBF offers identical functionality in a 24-QFN package. LTC4229CG#PBF provides the same electrical specifications in a 24-SSOP package but with a commercial temperature rating.