MAX8538EEI+

Overview

The MAX8538EEI+ is a dual synchronous buck controller manufactured by Analog Devices Inc. under the Maxim Integrated brand, housed in a 28-pin QSOP package. It operates within a supply voltage range of 4.75 V to 5.25 V and supports switching frequencies from 300 kHz to 1 MHz. The device functions across an industrial temperature range of -40°C to +85°C with a maximum operating current of 15 mA. It integrates internal linear regulators for biasing and features soft-start and soft-shutdown capabilities.

Feature Summary

• Dual synchronous buck controller architecture designed for load point regulation
• Integrated internal 5V VL linear regulator for operational amplifier biasing
• Configurable for tracking applications and DDR memory power supplies

Applications

• DDR memory power supply systems
• Voltage tracking circuits
• Load point regulation modules

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status via official documentation. Ensure storage conditions align with manufacturer specifications to maintain integrity. Validate pinout compatibility during integration. Review datasheet revisions for any functional updates prior to final design approval.

Selection Notes

Evaluate thermal management requirements for the QSOP-28 package in high-density layouts. Consider the 300 kHz to 1 MHz frequency range for inductor selection. Verify input voltage stability against the specified 4.75 V to 5.25 V operating window. Assess system timing constraints relative to the integrated soft-start and shutdown features.

Part Context

This component belongs to the MAX8538 series of power management ICs. It serves as a specialized solution for multi-phase or dual-output DC-DC conversion needs in computing and communication infrastructure. The device complements other Maxim Integrated controllers by providing precise voltage regulation with minimal external component count.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the 28-pin QSOP footprint and electrical specifications.