MAX1631EAI-TG074

Special Purpose Regulators Overview

The MAX1631EAI-TG074 is a dual-output synchronous buck switching controller designed for notebook computer power supplies. It operates within an input voltage range of +4.2V to +30V and provides dual adjustable outputs between 2.5V and 5.5V, supporting fixed 3.3V and 5V modes. The device features a low-noise architecture with selectable PWM frequencies of 200kHz or 300kHz. It integrates overvoltage and undervoltage protection, programmable power-on sequencing, and a ready signal. The component utilizes synchronous rectification to achieve high efficiency across a wide load current range.

Special Purpose Regulators Feature Summary

• Dual-output synchronous buck topology for efficient voltage conversion
• Integrated overvoltage and undervoltage protection mechanisms
• Programmable power-on sequencing with ready signal output
• Low-noise operation with selectable switching frequencies

Special Purpose Regulators Applications

• Notebook computer mainboard power supply units
• Battery-powered mobile electronic systems
• Personal Digital Assistant (PDA) logic power generation

Special Purpose Regulators Procurement Notes

Verify the specific suffix TG074 against official Analog Devices documentation to confirm package dimensions and tape-and-reel specifications. Confirm lifecycle status as obsolete for new designs. Ensure compatibility with existing PCB footprints for SSOP-28 packages. Cross-reference pinouts with the primary datasheet to avoid integration errors due to legacy design variations.

Special Purpose Regulators Selection Notes

Select this component for applications requiring dual independent regulated outputs from a single battery source. It is suitable for systems needing precise power-on sequencing and robust fault protection. Consider the obsolete status when planning long-term production runs. Evaluate thermal management requirements based on the SSOP-28 package limitations and expected load currents in the target application.

Special Purpose Regulators Part Context

This part belongs to the MAX1630-MAX1635 series of power management ICs manufactured by Maxim Integrated, now part of Analog Devices. These controllers are specifically engineered for portable computing devices. The MAX1631 variant distinguishes itself by including secondary feedback inputs for auxiliary winding regulation, unlike other series members that may include integrated linear regulators.

Special Purpose Regulators Replacement Considerations

Public confirmed substitute part numbers: MAX1631CAI+, MAX1631EAI+T.