MAX1559ETE

Overview

The MAX1559ETE is a five-output power management integrated circuit designed for portable applications. It integrates a high-efficiency step-down converter, two low-dropout linear regulators, and two charge pumps to support complex system requirements. The device operates from a single-cell lithium-ion or three-cell nickel-metal hydride battery source. Key electrical specifications include an input voltage range of 3.1V to 5.5V and a supply current of 100µA. The component is housed in a 16-pin TQFN package measuring 4mm x 4mm with a height of 0.8mm.

Feature Summary

• Integrates multiple power rails including switching and linear regulation within a single compact package
• Optimized for low-power operation suitable for battery-driven mobile devices
• Supports standard interface protocols for system control and monitoring

Applications

• Personal Digital Assistants (PDAs)
• Cellular telephones
• Portable electronic devices powered by single-cell Li+ batteries
• Portable systems utilizing three-cell NiMH battery configurations

Procurement Notes

Verify the specific suffix and tape/reel configuration when sourcing replacements, as packaging variations may exist. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the required thermal performance for the intended enclosure design. Cross-reference pinouts carefully against legacy designs to prevent compatibility issues during board updates.

Selection Notes

Select this component for designs requiring a consolidated power solution for low-voltage portable electronics. It is appropriate for systems needing simultaneous regulated outputs from a single cell or multi-cell battery pack. Consider the thermal dissipation capabilities of the TQFN-16 package relative to the total load current. Evaluate the static current consumption against strict standby power requirements typical in handheld communication devices.

Part Context

This part belongs to the Maxim Integrated portfolio of power management solutions tailored for consumer electronics. It addresses the trend toward miniaturization by combining discrete power components into a single IC. The MAX1559ETE specifically targets the PDA and early cellular market segments where space constraints and battery life are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers: None identified.