MAX1558ETB

Specialized Overview

The MAX1558ETB is a dual-channel USB power switch IC manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 2.75 V to 5.5 V and provides two independent outputs with a continuous current rating of 1.2 A per channel. The device features a maximum on-resistance of 105 mOhms and includes programmable current limiting set at 1.4 A. Electrical specifications include a maximum turn-on time of 4 ms and a maximum idle time of 1 ms. It is housed in a compact 3 mm x 3 mm DFN-10 package and supports surface mount installation across an operating temperature range of -40°C to +85°C.

Specialized Feature Summary

• Dual-channel architecture for independent USB port power distribution
• Programmable current limiting capability for overcurrent protection
• Low on-resistance design to minimize power loss and heat generation

Specialized Applications

• USB hub power management circuits
• Portable electronic device battery-powered systems
• Peripheral power switching in mobile computing platforms

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific ordering suffixes match project requirements. Review datasheet revisions for any updates to electrical characteristics or pin configurations before finalizing procurement orders.

Specialized Selection Notes

Select this component when dual isolated power paths are required for USB applications. Ensure input voltage stays within the 2.75 V to 5.5 V operational window. Verify that thermal dissipation capabilities of the DFN-10 package align with system constraints given the 1.2 A load capacity and 105 mOhm resistance values.

Specialized Part Context

This part belongs to the MAX1558 series of USB power switches designed for portable electronics. It integrates protection features typically found in dedicated power distribution units. The DFN-10 package allows for space-constrained designs common in modern handheld devices and compact peripheral interfaces.

Specialized Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts maintain identical pinout compatibility, current ratings, and package dimensions to avoid PCB redesign.