MAX4794ETT+

Current Regulation/Management Overview

The MAX4794ETT+ is a current-limit switch from the MAX4789–MAX4794 family, designed for load switching applications such as SDIO. It features an internal current limit of 300mA and a low on-resistance of 0.2Ω. The device operates within a 2.3V to 5.5V input voltage range and utilizes a 6-pin thin QFN package with dimensions of 3mm x 3mm. Key electrical characteristics include a guaranteed blanking time of 14ms to allow transient voltages to settle before fault detection.

Current Regulation/Management Feature Summary

• Autoretry functionality automatically attempts to restore power after an overload condition clears
• Internal current limiting protects host devices from damage due to faulty loads
• Low on-resistance minimizes power loss during normal operation

Current Regulation/Management Applications

• SDIO load switching
• General purpose load switching applications

Current Regulation/Management Procurement Notes

Verify the specific suffix 'ETT' corresponds to the thin QFN-6 package configuration when sourcing. Confirm that the '+T' designation indicates tape-and-reel packaging if required by assembly processes. Ensure compatibility with the 2.3V to 5.5V supply range and 300mA current limit requirements for the target application design.

Current Regulation/Management Selection Notes

Select this component when autoretry behavior is preferred over latch-off protection against persistent faults. The 300mA current limit suits moderate load requirements compared to lower-rated variants in the same family. The small form factor is suitable for space-constrained PCB layouts requiring surface-mount integration.

Current Regulation/Management Part Context

This part belongs to the MAX4789–MAX4794 series of analog switches. Unlike other members that may feature latch-off mechanisms, the MAX4794 specifically incorporates an autoretry feature. This distinguishes it within the family for applications requiring automatic recovery from temporary overloads without manual intervention or power cycling.

Current Regulation/Management Replacement Considerations

Substitutes within the MAX4789–MAX4794 family must be verified for matching current limits and package types. Models like MAX4790 or MAX4792 offer different current ratings or latch-off behaviors which are not functionally equivalent to the autoretry feature of the MAX4794.