MAX6330TUR+T

Overview

The MAX6330TUR+T is a precision shunt regulator with an integrated power-on reset function housed in a SOT23-3 package. It provides a regulated 3.0V output with ±1.5% tolerance and operates within a shunt current range of 100µA to 50mA. The device features an active-low push/pull RESET output with a 140ms timeout period, triggered at a threshold of 3.06V (±1.5%). It functions over a temperature range of -40°C to +85°C.

Feature Summary

• Combines a precision shunt voltage reference with a microprocessor supervisory circuit in a single compact component.
• Provides active-low push/pull reset output to protect systems during power-up, power-down, and brownout conditions.
• Offers high transient immunity and requires no external components for the reset timeout function.

Applications

• Controllers
• Household Appliances
• Intelligent Instruments
• Critical µP and µC Power Monitoring
• Portable/Size-Sensitive Equipment

Procurement Notes

Verify the specific ordering suffix 'T' indicates the 3.0V shunt voltage and 3.06V reset threshold configuration. Confirm lead-free packaging status by checking for the '+T' designation. Ensure compatibility with the required minimum order increment of 2,500 pieces when placing orders. Validate that the SOT23-3 footprint matches the design layout.

Selection Notes

Select this component when board space is limited and both voltage regulation and system reset are required. Choose based on the specific shunt voltage needed (3.0V for this variant) and the logic level requirements of the connected microprocessor. Consider the thermal derating requirements if operating at maximum shunt currents or elevated temperatures.

Part Context

This part belongs to the MAX6330/MAX6331 family of precision shunt regulators with reset functions. The MAX6330 series offers active-low outputs, while the MAX6331 series provides active-high outputs. Both families integrate monitoring capabilities into a small 3-pin package to simplify power supply design for low-voltage digital systems.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.

FAQ

What is the reset timeout period for the MAX6330TUR+T?

The device features a fixed 140ms reset timeout period after the supply voltage rises above the reset threshold.

How does the MAX6330 handle brownout conditions?

If the supply voltage dips below the reset threshold, the RESET output goes low immediately. The internal timer resets, and the output remains low until the voltage recovers and the 140ms timeout elapses.