MAX1587CETL

Overview

The MAX1587CETL is a power management integrated circuit from Maxim Integrated, housed in a 40-pin TQFN package. It integrates three step-down DC-DC converters and three low-dropout (LDO) regulators within a single chip. The device supports an input voltage range up to 5.5V and operates across a temperature range of -40°C to 85°C. Designed for space-constrained applications, it combines multiple regulation topologies to provide efficient power distribution for complex electronic systems requiring multiple voltage rails.

Feature Summary

• Integrates three independent step-down DC-DC converters for efficient voltage transformation
• Includes three dedicated low-dropout (LDO) regulators for precise noise-sensitive loads
• Utilizes a compact 40-pin Thin Quad Flatpack No-lead (TQFN) surface-mount package

Applications

• Portable consumer electronics requiring multiple power rails
• Industrial control modules with mixed analog and digital power needs
• Communication equipment utilizing space-efficient power architectures

Procurement Notes

Verify the specific suffix (e.g., +T) against the manufacturer's current product status, as availability may vary. Confirm that the 40-TQFN package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component when a single IC solution is required to manage both high-current switching loads via DC-DC converters and low-noise linear loads via LDOs. The choice is driven by the need to minimize board space while maintaining multiple regulated output voltages from a single input source.

Part Context

This part belongs to the MAX1587 series of multitopology voltage regulators. It represents a consolidation strategy where discrete regulator components are replaced by a single multifunctional IC to reduce assembly complexity and improve power density in modern electronic designs.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family or updated revisions from Analog Devices/Maxim Integrated. Verify that substitute parts maintain the same 3-step-down and 3-LDO configuration and compatible thermal performance.