LT4294HDD#PBF

Overview

The LT4294HDD#PBF is a hot swap voltage controller designed for IEEE 802.3bt Powered Device (PD) applications. It operates within an input voltage range of 8 V to 60 V and features adjustable current limiting. The device supports single-channel operation with a typical operating supply current of 2 mA. It is rated for commercial temperatures from -40°C to +85°C and is housed in a 10-lead DFN package.

Feature Summary

• Supports IEEE 802.3bt PD interface control
• Provides adjustable current limiting protection
• Enables safe hot insertion into live circuits

Applications

• IEEE 802.3bt Type 3 and Type 4 Powered Devices
• High-power PoE++ endpoint equipment
• Hot-swap power distribution systems

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status through the manufacturer's datasheet or product change notifications before integration.

Selection Notes

Select this component for applications requiring strict adherence to IEEE 802.3bt standards. Ensure the design accommodates the 60 V maximum input rating and the thermal requirements of the DFN-10 package under full load conditions.

Part Context

This part belongs to the LT4294 series of hot swap controllers. It is distinct from the LT4293, which targets different PoE standards. The HDD suffix indicates a specific temperature grade and package variant within the Analog Devices portfolio.

Replacement Considerations

LT4294IDD#PBF is a documented alternative within the same family.