MAX77533BEWC33+

Overview

The MAX77533BEWC33+ is a high-efficiency synchronous step-down DC-DC converter designed for USB-powered applications. It operates with an input voltage range of 3V to 14V and delivers up to 1.5A of output current. The device integrates a 1.5MHz switching frequency to minimize external component size while maintaining high efficiency across load conditions. It features a fixed 3.3V output voltage, making it suitable for powering downstream logic and peripherals in portable electronics.

Feature Summary

• Integrated synchronous buck topology for high conversion efficiency
• Fixed 3.3V output configuration optimized for USB power rails
• Compact WLP package design reduces overall solution footprint

Applications

• USB-powered portable electronic devices
• Battery-operated consumer electronics
• Embedded systems requiring stable 3.3V logic supply

Procurement Notes

Verify the specific suffix '33' confirms the fixed 3.3V output variant during procurement. Confirm the WLP-12 package availability matches your PCB layout requirements. Check current lifecycle status as power management ICs may undergo obsolescence notices. Ensure thermal dissipation capabilities align with your enclosure constraints.

Selection Notes

Select this component when a fixed 3.3V rail is required from a variable 3V–14V source. The integrated switch eliminates the need for external power MOSFETs. Consider the 1.5A current limit for moderate load applications. Evaluate the WLP-12 package for space-constrained designs compared to larger BGA options.

Part Context

This part belongs to the MAX77533 family of USB-compatible buck converters. It shares architectural similarities with other Maxim Integrated PMICs but is distinguished by its fixed output voltage and compact wafer-level packaging. The series targets mobile and IoT applications where board real estate is limited.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative regulators based on pinout and electrical specifications.