MAX1901EAI+T

Overview

The MAX1901EAI+T is a dual-output, non-isolated synchronous buck controller designed for notebook power systems. It operates with an input voltage range of 3V to 21V and supports output voltages from 0.8V to 5.5V. The device integrates two PWM controllers capable of delivering up to 6A per channel. It features a fixed 500kHz switching frequency and includes comprehensive protection mechanisms such as overcurrent, thermal shutdown, and undervoltage lockout.

Feature Summary

• Dual-channel architecture providing independent control for complex multi-rail power requirements
• Integrated synchronous rectification drivers eliminating the need for external MOSFETs in low-current applications
• Fixed 500kHz switching frequency optimizing component size and transient response

Applications

• Notebook computer main system power distribution
• Portable computing devices requiring multiple regulated voltage rails
• Industrial equipment with moderate load transient requirements

Procurement Notes

Verify the suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the 'E' grade specifies industrial temperature operation. Ensure compatibility with existing PCB footprints for the 28-SSOP package. Cross-reference RoHS compliance status with current manufacturer declarations prior to final procurement approval.

Selection Notes

Select this component for designs requiring two isolated or non-isolated DC-DC outputs from a single controller IC. It is suitable for applications where board space is limited but dual rail regulation is necessary. Consider the 500kHz frequency trade-off between efficiency and passive component size compared to lower-frequency alternatives.

Part Context

This part belongs to the MAX1901 family of notebook power system controllers. It serves as a compact solution for replacing discrete controller and driver combinations. The device simplifies schematic design by integrating gate drivers and protection logic into a single package.

Replacement Considerations

Check for MAX1901 variants with different suffixes indicating package changes or temperature ranges. Verify pin-to-pin compatibility if substituting with older revisions of the MAX1901 series.