MAX14739EWT+

Overview

The MAX14739EWT+ is a specialized power management IC designed for overvoltage protection in wearable and portable electronic devices. It operates within a supply voltage range of 2V to 5.5V and features an integrated charge pump to generate a negative rail for high-side switch control. The device supports input voltages up to 5.5V and provides precise overvoltage threshold detection with hysteresis. It includes a low RDS(ON) N-channel MOSFET switch capable of handling continuous current, along with thermal shutdown and reverse current blocking capabilities. Packaged in a compact 6-WLP (Wafer Level Package), it ensures minimal board space usage while maintaining robust fault protection.

Feature Summary

• Integrated overvoltage protection with programmable threshold and hysteresis
• Built-in charge pump for high-side gate drive generation
• Low on-resistance N-channel pass transistor for efficient power switching
• Reverse current blocking and thermal shutdown protection

Applications

• Wearable device battery charging systems
• Portable electronics power distribution networks
• USB-powered gadget overvoltage protection
• Smartwatch and fitness tracker power management

Procurement Notes

Verify the exact ordering suffix and package variant against the official Analog Devices datasheet to ensure compatibility with your PCB footprint and thermal requirements. Confirm that the component meets RoHS compliance standards if required by your manufacturing process. Check for any specific handling instructions related to the WLP package during assembly. Ensure that the supplier provides traceability documentation consistent with original manufacturer standards.

Selection Notes

Select this component when designing systems requiring compact overvoltage protection with integrated switching functionality. Consider its low profile and small footprint for space-constrained wearable applications. Evaluate the overvoltage threshold settings against your system's maximum allowable input voltage. Assess the thermal performance under expected load conditions to ensure reliable operation within the specified temperature range.

Part Context

The MAX14739EWT+ belongs to Maxim Integrated’s family of specialized PMICs focused on protecting sensitive loads from voltage transients. It combines protection logic with power switching in a single solution, reducing component count compared to discrete designs. This integration is particularly valuable in modern miniaturized electronics where board real estate is limited and reliability under fault conditions is critical.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided source material. Cross-reference with other Maxim overvoltage protectors only after verifying pinout, electrical parameters, and package dimensions against the official datasheet.

FAQ

What is the maximum input voltage supported by the MAX14739EWT+?

The device supports input voltages up to 5.5V.

Does the MAX14739EWT+ include reverse current protection?

Yes, it features reverse current blocking to prevent backflow from output to input.

What package type does the MAX14739EWT+ use?

It is available in a 6-WLP (Wafer Level Package) configuration.