MAX8504ETC

Power Management - Specialized Overview

The MAX8504ETC is a PWM buck converter with an integrated bypass FET, designed for N-CDMA/W-CDMA handsets. It operates from a 2.6V to 5.5V supply and delivers up to 1A output current. The switching frequency is fixed at 1MHz. Output voltage is adjustable via external resistors, ranging from 1.25V to 2.5V. It features synchronous rectification and operates within a temperature range of -40°C to 85°C.

Power Management - Specialized Feature Summary

• Integrates a high-power bypass mode that connects the output directly to the input for efficiency.
• Utilizes synchronous rectification to enhance power conversion performance.
• Supports fixed 1MHz switching frequency for compact passive component selection.

Power Management - Specialized Applications

• N-CDMA mobile handsets
• W-CDMA mobile handsets

Power Management - Specialized Procurement Notes

Verify the manufacturer marking on the device against Analog Devices Inc./Maxim Integrated specifications. Confirm the package type matches the ETC designation in the official datasheet. Ensure the part number suffix corresponds to the correct temperature grade and packaging configuration before finalizing procurement orders.

Power Management - Specialized Selection Notes

Select this component when designing power systems for CDMA or W-CDMA mobile devices requiring efficient step-down conversion. The integrated bypass feature is critical for applications needing low dropout voltage or high efficiency at light loads. Ensure the required output voltage falls within the 1.25V to 2.5V adjustable range supported by external feedback resistors.

Power Management - Specialized Part Context

The MAX8504 series belongs to Maxim Integrated's portfolio of power management ICs, now part of Analog Devices Inc. These components are engineered for portable electronics, specifically targeting the stringent power constraints of mobile communication devices. The MAX8504ETC represents a specific variant optimized for handset applications.

Power Management - Specialized Replacement Considerations

Consult the official Analog Devices cross-reference guide for verified substitutes. Generic step-down converters may lack the specific bypass FET architecture or W-CDMA optimization required for direct replacement.