MAX6402BS29+

Supervisors Overview

The MAX6402BS29+ is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single supply voltage with a fixed threshold of 2.93V. The device features an active-low reset output and a minimum reset timeout period of 100ms. It operates within a temperature range of -40°C to +85°C and is housed in a compact 4-UCSP (1.05x1.05mm) surface-mount package.

Supervisors Feature Summary

• Provides precise monitoring of system supply voltages using an internal bandgap reference
• Asserts reset output during power-up, power-down, and brownout conditions
• Eliminates the need for external components through internally trimmed resistor networks

Supervisors Applications

• Monitoring nominal system voltages in portable electronic devices
• Ensuring reliable operation in battery-powered equipment
• Providing supervision for microprocessor systems requiring low component count

Supervisors Procurement Notes

Verify the specific suffix 'S29' against official manufacturer documentation to confirm the exact threshold voltage and package variant. Ensure compatibility with the target PCB footprint for the 4-UCSP package. Confirm that the active-low reset polarity meets the design requirements before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 2.93V threshold is required for single-supply monitoring. Consider the ultra-small 4-UCSP package for space-constrained designs. Verify that the 100ms minimum reset timeout aligns with the system's startup timing requirements and that the operating temperature range covers the intended application environment.

Supervisors Part Context

This part belongs to the MAX6400/MAX6402 family of ultra-small, ultra-low-power microprocessor supervisory circuits. These devices are designed to monitor system supply voltages from 1.8V to 3.6V. The family offers excellent reliability by eliminating external adjustments and components typically needed for voltage monitoring applications.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers for the MAX6402BS29+ are not available in the provided source material.