TPS2419D

Overview

The TPS2419D is a hot-swap controller designed for high-side power distribution in systems requiring controlled insertion and removal of circuit cards. It integrates an N-channel MOSFET driver, current limit circuitry, and fault protection mechanisms. The device monitors output voltage and current to prevent damage during system faults or overcurrent conditions. Key electrical parameters include a programmable current limit threshold and adjustable soft-start time. It operates with supply voltages up to 36V and supports load currents determined by the external MOSFET selection.

Feature Summary

• Integrated high-side switch control with built-in MOSFET driver
• Programmable current limiting and foldback protection
• Adjustable soft-start to manage inrush current
• Fault indication outputs for system monitoring

Applications

• Hot-pluggable backplane power distribution
• PCI Express and PCI-X slot power management
• Industrial control card insertion systems
• Telecommunications equipment power modules

Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest datasheet revision. Confirm that the 'D' suffix corresponds to the correct temperature range and packaging format as defined in the official ordering information. Cross-reference the part number with authorized distributors to ensure authenticity and traceability before procurement.

Selection Notes

Select this component when active current limiting and controlled power-up sequences are required for hot-swap applications. Ensure the external MOSFET selected can handle the maximum expected load current and voltage stress. Verify that the desired current limit setting and soft-start duration align with the system's power budget and thermal constraints.

Part Context

This device belongs to Texas Instruments' family of hot-swap controllers, which provide robust protection for high-side switching applications. It complements other devices like the TPS2410 and TPS2411 by offering integrated driver capabilities. The series is commonly used in environments where circuit cards must be inserted or removed without disrupting system operation.

Replacement Considerations

Direct replacements may include the TPS2410 or TPS2411 depending on specific pin compatibility and feature requirements. Verify that any substitute part matches the voltage rating, current handling capability, and package dimensions. Review the functional differences in protection thresholds and timing characteristics to ensure system compatibility.