TPS24742RGET

Hot Swap Controllers Overview

The TPS24742RGET is a single-channel hot swap and OR controller manufactured by Texas Instruments. It operates within a supply voltage range of 2.5V to 18V and draws a supply current of 4.2 mA. The device is housed in a 24-VQFN (4x4 mm) package with exposed pad, suitable for surface mount installation. It supports an operating temperature range from -40°C to +125°C. Key programmable features include current limiting, fault timeout, overvoltage protection (OVP), and turn-on voltage settings. The component does not contain an internal switch.

Hot Swap Controllers Feature Summary

• Provides intelligent control for external high-side N-channel MOSFETs during hot insertion events
• Features programmable input overvoltage protection and undervoltage lockout with hysteresis
• Supports remote on/off control via the enable input pin
• Includes latch-off fault protection that persists until the enable input or UVLO input is reset

Hot Swap Controllers Applications

• Hot swap controller applications requiring controlled power insertion
• OR controller configurations for redundant power supplies
• General-purpose power management circuits involving external MOSFET switching

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'RGET' corresponds to the tape and reel packaging format when ordering. Confirm the 24-VQFN package dimensions match the target PCB footprint. Ensure the design accommodates the required thermal dissipation for the exposed pad. Check for any recent Product Change Notifications regarding material or manufacturing site changes.

Hot Swap Controllers Selection Notes

Select this component when a dedicated controller for external MOSFETs is preferred over integrated eFuses. It is suitable for systems requiring precise control over inrush current and fault response times. Consider the 2.5V to 18V supply range compatibility with the system's logic levels. Evaluate the need for programmable OVP and current limit thresholds against the load requirements.

Hot Swap Controllers Part Context

This part belongs to the TPS2474x family of hot swap and OR controllers. It shares functional similarities with the TPS24740 but may differ in specific parameter tolerances or feature sets. The family is designed for general-purpose power management tasks involving safe insertion and removal of live circuits.

Hot Swap Controllers FAQ

Does the TPS24742RGET include an internal power switch?

No, the TPS24742RGET is a controller only and requires an external high-side N-channel MOSFET for power switching.

What is the function of the latch-off feature?

The latch-off feature keeps the MOSFET turned off after a detected fault exceeds the allowed delay time, requiring a reset via the enable input or UVLO input to restore operation.