MAX8564EUB+

Overview

The MAX8564EUB+ is a dual linear n-FET controller from the MAX8563/MAX8564 family, designed for ultra-low output voltage point-of-load conversion. It features a 0.5V reference with ±1% accuracy and operates within a VDD range of 4.5V to 13.2V. The device provides two independently enabled outputs adjustable from 0.5V to 3.3V at 12V supply or 0.5V to 1.8V at 5V supply. Packaged in a 10-pin µMAX, it supports operation from -40°C to +85°C.

Feature Summary

• Dual independent LDO controllers with individual enable inputs and power-good signals
• Ultra-low feedback regulation voltage of 0.5V with ±1% accuracy
• Integrated undervoltage lockout and overload protection against soft short-circuit conditions
• Capable of driving external n-channel MOSFETs using ceramic output capacitors

Applications

• Motherboards
• Desknotes and notebooks
• Graphic cards
• Low-voltage DSP, microprocessor, and microcontroller power supplies

Procurement Notes

Verify the specific suffix 'EUB+' corresponds to the lead-free package variant as indicated by the '+' designation. Confirm the operating temperature range matches the '-40°C to +85°C' specification for the 'E' grade. Ensure the 10-pin µMAX package form factor aligns with the PCB layout requirements.

Selection Notes

Select this component when flexible, low-cost point-of-load conversion is required for voltages down to 0.5V. It is suitable for applications needing tight regulation and independent sequencing via enable controls. Consider the external n-MOSFET selection carefully to meet thermal and breakdown voltage constraints relative to the input rail.

Part Context

This part belongs to the MAX8563/MAX8564/MAX8564A series of ultra-low-output dual and triple linear n-FET controllers. While the MAX8563 offers three outputs in a 16-pin QSOP, the MAX8564 variants provide two outputs in a compact 10-pin µMAX package, sharing identical electrical characteristics and control logic.

Replacement Considerations

The MAX8564AEUB+ is a verified substitute within the same family offering identical dual-channel functionality and pinout compatibility.