MAX8668ETEU+T

Overview

The MAX8668ETEU+T is a power management integrated circuit from Analog Devices/Maxim Integrated, housed in a TQFN-16 package. It integrates two synchronous step-down DC-DC converters and two low-dropout (LDO) regulators within a single chip. The switching regulators operate at a fixed frequency of 1.5 MHz and provide individual enables for each channel. Each buck converter delivers an output current of 1.2 A with adjustable output voltages ranging from 600 mV to 3.3 V. The device supports four total outputs and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual synchronous step-down DC-DC converters and dual LDOs in a compact form factor
• Features individual enable controls for independent power rail management
• Operates at a fixed 1.5 MHz switching frequency to optimize external component size

Applications

• Portable electronic devices requiring multiple regulated voltage rails
• Battery-powered systems needing efficient power conversion
• Embedded applications utilizing the integrated LDOs for noise-sensitive circuits

Procurement Notes

Verify the specific suffix EU against official documentation to confirm pin compatibility and thermal characteristics relative to other variants like ETET. Confirm RoHS compliance status through the manufacturer's certificate. Check for end-of-life or obsolescence notices as availability may be restricted. Ensure the TQFN-16 footprint matches your PCB design requirements before procurement.

Selection Notes

Select this component when a design requires two high-current buck converters alongside two LDOs in a space-constrained environment. The 1.5 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the required output voltage ranges fall within the 600 mV to 3.3 V specification for the buck channels. Consider the thermal performance of the TQFN-16 package under maximum load conditions.

Part Context

This part belongs to the MAX8668 series of multi-output power management ICs designed by Maxim Integrated, now part of Analog Devices. These components are engineered to simplify power architecture in portable electronics by combining multiple regulation stages into a single solution. The series typically targets applications where board space and power efficiency are critical constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's datasheet for recommended cross-references or updated product line replacements.