MAX4917AELT+

Overview

The MAX4917AELT+ is a single-channel current-limit switch from the MAX4917 family, designed for power distribution applications. It operates within a 2.3V to 5.5V input voltage range and features a maximum on-resistance of 400mΩ. The device provides a guaranteed current limit of 300mA with an output current capability of 95mA. It includes a blanking time of 14ms to prevent false triggering during load connection. The component supports a shutdown reverse current specification and functions across a temperature range of -40°C to +85°C. It is housed in a compact 6-pin UDFN-6 package.

Feature Summary

• Internal current limiting protects host devices from faulty load conditions
• Low shutdown reverse current minimizes power drain when disabled
• Guaranteed 14ms blanking time prevents false current-limit activation
• Low on-resistance reduces power loss during normal operation

Applications

• SDIO load switching
• Peripheral power distribution
• Portable electronic device power management

Procurement Notes

Verify the exact suffix 'LT' against official Analog Devices documentation to confirm the specific tape-and-reel packaging and lead-free status. Ensure the sourcing channel provides valid RoHS compliance certificates. Cross-reference the part number with the latest datasheet revision to confirm pinout compatibility and electrical specifications before integration into production designs.

Selection Notes

Select this component when a single-channel switch with a 300mA current limit is required. Consider the 400mΩ on-resistance for efficiency calculations. Verify that the 2.3V minimum operating voltage aligns with the system's supply rails. The UDFN-6 package size should be evaluated against available PCB footprint constraints compared to other variants in the MAX4917 family.

Part Context

The MAX4917AELT+ belongs to the MAX4917A/B series of current-limit switches. This family offers integrated protection for downstream loads. The 'A' designation typically indicates specific current limit tolerances. The device complements other Maxim Integrated power management solutions by providing simple, low-component-count switching for portable systems requiring robust overcurrent protection.

Replacement Considerations

The MAX4917AEUK+T is a documented alternative in the same family, offering similar functionality in a different SOT-23-5 package. Verify pin-to-pin compatibility and thermal performance differences between the UDFN-6 and SOT-23-5 packages before substitution.