XC6121A326MR-G

Supervisors Overview

The XC6121A326MR-G is a high-precision voltage detector manufactured by Torex Semiconductor Ltd. It operates within a supply voltage range of 1.5 V to 6 V and features a fixed detection threshold of 2.6 V with an accuracy of ±2%. The device utilizes CMOS technology for low current consumption, drawing only 9.8 µA during operation. It provides an open-drain output that goes active-low when the monitored voltage falls below the threshold. Key functional parameters include a reset delay time of 400 ms and a watchdog timer. The component is housed in a compact SOT-25-5 package and supports an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer function to monitor system stability and prevent software lockups without external components.
• Features an ON/OFF control pin (EN/ENB) allowing precise power management and standby mode activation.
• Provides a built-in delay circuit to ensure stable release signals, eliminating the need for external timing capacitors.

Supervisors Applications

• Battery-powered portable electronic devices requiring low quiescent current monitoring
• Microprocessor and microcontroller reset circuits in embedded systems
• Industrial equipment power supply supervision

Supervisors Procurement Notes

Verify the specific suffix MR-G confirms the SOT-25-5 package and RoHS compliance status before ordering. Ensure the design accounts for the 400 ms reset delay time to meet system startup requirements. Confirm the EN/ENB pin configuration aligns with the intended always-on or controlled operation mode. Cross-reference the datasheet for exact electrical characteristics at the target operating temperature extremes.

Supervisors Selection Notes

Select this component when a fixed 2.6 V threshold is required for single-supply monitoring applications. It is suitable for designs prioritizing low power consumption due to its 9.8 µA operating current. The integrated watchdog and delay functions simplify schematic design by reducing external component count. Consider the SOT-25-5 package size constraints and the open-drain output capability for interfacing with various logic levels.

Supervisors Part Context

This part belongs to the XC6121 series of voltage detectors from Torex Semiconductor. The series is characterized by high precision and low current consumption using CMOS processes. Variants within the series differ primarily in detection threshold voltages and package types, such as SOT-25-5 or USP-6C. The XC6121A326MR-G specifically denotes the 2.6 V threshold version in the standard surface-mount package.

Supervisors Replacement Considerations

Direct substitutes may include other XC6121 series variants with different thresholds if the voltage level can be adjusted or tolerated. Verify compatibility regarding package dimensions, pinout assignments, and electrical specifications such as operating voltage range and current consumption before substitution.