MAX8668ETEA+

Overview

The MAX8668ETEA+ is a quad-output power management IC featuring two synchronous step-down DC-DC converters and two low-dropout linear regulators. It operates from a 2.6V to 5.5V input supply with a fixed 1.5MHz switching frequency. Output 1 provides up to 600mA at 0.6V to 3.3V, while Output 2 delivers up to 1.2A at the same voltage range. The integrated LDOs provide fixed 2.8V outputs. The device is housed in a compact 16-TQFN (3x3) package.

Feature Summary

• Integrates two high-efficiency synchronous buck converters for flexible adjustable voltage rails
• Includes two dedicated low-dropout linear regulators providing stable preset output voltages
• Utilizes a fixed 1.5MHz switching frequency to minimize external component size
• Designed for single-cell lithium-ion battery powered portable applications

Applications

• Portable medical devices requiring multiple regulated voltage rails
• Handheld instrumentation systems
• Battery-operated consumer electronics
• Industrial handheld terminals

Procurement Notes

Verify current availability status as this component may be obsolete or subject to limited supply constraints. Confirm that the 16-TQFN package dimensions match your PCB footprint requirements. Ensure input voltage ranges align with your system's battery or supply characteristics before finalizing procurement.

Selection Notes

Select this component when designing systems requiring four distinct voltage rails from a single power source. It is suitable for applications needing both high-current adjustable outputs and precise fixed LDO rails. Consider the thermal performance of the 16-TQFN package under maximum load conditions to ensure reliable operation within the specified temperature range.

Part Context

This part belongs to the MAX8668 family of power management ICs designed for portable electronics. It consolidates multiple regulation functions into a single small-footprint solution, reducing board space compared to discrete regulator implementations. The series targets applications where power efficiency and size are critical constraints.

Replacement Considerations

Check for MAX8668 variants with different suffixes such as ETEU+ or ETEP+. Verify if alternative packages like TQFN-48 are available for higher current requirements. Confirm functional compatibility regarding pinouts and control interfaces before substitution.