MAX1777EEI+T

Overview

The MAX1777EEI+T is a quad-output power management IC featuring two switching buck regulators and two low-dropout linear regulators. It operates within an input voltage range of 2.7V to 28V, supporting synchronous rectification for the switching sections. The device integrates a programmable switching frequency between 200kHz and 500kHz. It is housed in a 28-pin QSOP package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual synchronous buck converters alongside dual LDO regulators in a single component
• Supports wide input voltage ranges suitable for various battery and system power architectures
• Features programmable switching frequency to optimize efficiency and external component size

Applications

• Portable computing devices requiring multiple regulated voltage rails
• Industrial control systems with mixed analog and digital power needs
• Embedded applications utilizing lithium-ion or lead-acid battery sources

Procurement Notes

Verify the specific suffix and tape-and-reel configuration against current manufacturer documentation. Confirm RoHS compliance status and check for obsolescence notices prior to procurement. Ensure the supplier provides valid traceability records for the Analog Devices Inc./Maxim Integrated part number.

Selection Notes

Select this component when space constraints require combining switching and linear regulation. Evaluate thermal performance for the QSOP package under maximum load conditions. Verify that the required output currents for both buck and LDO sections fall within the datasheet specifications.

Part Context

This part belongs to the MAX177x series of integrated power management solutions. It consolidates multiple voltage regulation functions into one package, reducing board area compared to discrete solutions. The design targets applications needing efficient step-down conversion alongside stable linear outputs.

Replacement Considerations

Consult official cross-reference lists for direct pin-compatible alternatives. Verify electrical parameters and pin assignments before substituting.