MAX1999EEI+

Overview

The MAX1999EEI+ is a quad-output power management integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It integrates two synchronous buck converters and two low-dropout linear regulators (LDOs) within a single package. The device operates with a switching frequency of 200kHz for the buck sections. It supports a supply voltage range of 4.5V to 36V. The component is housed in a 28-lead Thin Shrink Small Outline Package (TSSOP) with an exposed pad, designated as 28-TQFN with Exposed Pad.

Feature Summary

• Integrates dual synchronous step-down converters and dual LDOs for comprehensive power distribution
• Features adjustable output voltages via external resistor networks for flexible system design
• Includes built-in protection mechanisms such as thermal shutdown and current limiting

Applications

• Industrial automation control systems requiring multiple regulated rails
• Telecommunications infrastructure equipment power modules
• Embedded computing platforms needing compact power solutions

Procurement Notes

Verify the specific suffix EEI against the official datasheet to confirm pinout compatibility and thermal characteristics. Ensure the procurement source provides valid RoHS compliance documentation. Confirm that the 28-TQFN package dimensions match the target PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when a single IC solution is required to generate four distinct voltage rails from a high-voltage input. It is suitable for designs prioritizing board space efficiency over discrete regulator implementations. Verify that the total power dissipation remains within the thermal limits of the TQFN package under maximum load conditions.

Part Context

This part belongs to the MAX1999 family of mixed-signal power management devices. These components are designed to simplify power architecture in complex electronic systems. The series offers a consolidated approach to managing both switching and linear regulation needs within industrial and communication applications.

Replacement Considerations

No publicly confirmed substitute part numbers were identified in the provided documentation.