MAX1631AEAI

Special Purpose Regulators Overview

The MAX1631AEAI+ is a multi-output, low-noise power-supply controller designed for notebook computers. It utilizes a buck topology to provide dual adjustable outputs ranging from 2.5V to 5.5V or selectable fixed 3.3V and 5V modes. Operating with an input voltage range of +4.2V to +30V, it features a switching frequency of 300 kHz and delivers up to 1A output current per channel. The device includes a secondary feedback input for auxiliary voltage regulation and operates within a temperature range of -40°C to +85°C in an SSOP-28 package.

Special Purpose Regulators Feature Summary

• Dual-mode operation allows selection between adjustable 2.5V–5.5V outputs or fixed 3.3V/5V configurations.
• Integrated secondary feedback input enables precise regulation of non-standard auxiliary voltages.
• Low-noise architecture supports sensitive analog circuits in mobile computing environments.
• Built-in overvoltage and undervoltage protection ensures system reliability.

Special Purpose Regulators Applications

• Notebook computer motherboard power management
• Portable electronic device logic supply generation
• Battery-powered systems requiring multiple regulated rails

Special Purpose Regulators Procurement Notes

Verify the exact suffix (e.g., AEAI+) against the manufacturer's official datasheet to confirm pinout and electrical specifications. Confirm RoHS compliance status as indicated in the specific revision documentation. Check for obsolescence notices or Not Recommended for New Design (NRND) status before finalizing procurement plans.

Special Purpose Regulators Selection Notes

Select this component when designing battery-operated systems requiring efficient dual-rail generation. Ensure the application benefits from the integrated secondary feedback feature for auxiliary winding regulation. Verify that the required output voltage range falls within the 2.5V to 5.5V adjustable window or matches the fixed options.

Special Purpose Regulators Part Context

This part belongs to the MAX1631A series, which are enhanced versions of the MAX1630 family featuring improved RF suppression. These controllers are specifically engineered for laptop power supplies, replacing older linear regulators to improve efficiency and reduce heat dissipation in compact form factors.

Special Purpose Regulators Replacement Considerations

MAX1632AEAI+ shares similar functionality but includes an additional 12V linear regulator. MAX1630AEAI+ lacks the secondary feedback input found in the MAX1631A variant. Verify functional compatibility regarding auxiliary voltage regulation requirements.