DS1831E

Supervisors Overview

The DS1831E is a MicroMonitor supervisory circuit designed for multi-supply systems. It features two monitored inputs with fixed thresholds of 2.5 V and 3.3 V. The device provides an open-drain output and includes manual reset capability alongside a watchdog timer. It operates within a supply voltage range of 1 V to 5.5 V, drawing 80 uA. Reset delay is 1.6 s, with overvoltage thresholds at 2.375 V and 2.97 V. Power-fail detection is supported. Operating temperature spans -40 C to +85 C in an SOIC-16 package.

Supervisors Feature Summary

• Monitors dual power supplies with fixed 2.5 V and 3.3 V thresholds
• Integrates a watchdog timer for system reliability
• Supports manual reset input functionality
• Provides power-fail warning detection

Supervisors Applications

• Multi-supply voltage monitoring in embedded systems
• System supervision for microprocessor platforms
• Power-fail warning circuits
• Watchdog timer implementation in industrial controllers

Supervisors Procurement Notes

Verify the exact suffix against official Analog Devices documentation, as variants like DS1831ES+ exist. Confirm RoHS compliance status and lead times directly with authorized distributors. Check for obsolescence notices or PCN updates prior to procurement. Ensure the specific package type matches design requirements.

Supervisors Selection Notes

Select this component when dual-channel supervision with fixed thresholds is required. Compare against adjustable threshold variants if flexibility is needed. Verify current consumption and operating temperature range against application constraints. Consider package availability and lifecycle status before finalizing the design.

Supervisors Part Context

Part of the Maxim Integrated MicroMonitor family, the DS1831E focuses on reliable power management supervision. It complements other PMIC components by providing dedicated voltage monitoring and reset generation capabilities for complex multi-rail systems.

Supervisors Replacement Considerations

DS1831DS+ offers four channels instead of two. DS1831ES+T&R is a tape-and-reel variant of the same core function. Verify pinout compatibility and threshold specifications when substituting.