DS1819BR-10-U

Supervisors Overview

The DS1819BR-10-U is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1 V to 5.5 V and monitors a single input channel. The device features a watchdog timer, an active high/low push-pull output, and a reset delay time of 280 ms. It lacks manual reset functionality and battery backup switching. The threshold voltage is 3 V with an accuracy of 10%, while the undervoltage threshold is 2.85 V and the overvoltage threshold is 3.3 V. Operating current is 12 uA, and it functions between -40°C and +85°C in an SOT-23-5 package.

Supervisors Feature Summary

• Integrates a watchdog timer for system fault recovery without requiring external components.
• Provides configurable active high or active low push-pull reset outputs for flexible logic interfacing.
• Monitors power supply integrity through dedicated undervoltage and overvoltage detection thresholds.

Supervisors Applications

• Embedded systems requiring automated power-on reset sequences
• Microcontroller-based designs needing watchdog protection against software hangs
• Portable electronics utilizing low standby current operation

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as this part may be discontinued. Confirm RoHS compliance status and check for obsolescence notices from Analog Devices. Ensure the SOT-23-5 footprint matches your PCB design before procurement. Review datasheet revisions for any parameter updates that might affect compatibility with existing designs.

Supervisors Selection Notes

Select this component when a single-channel voltage monitor with integrated watchdog functionality is required. Consider the 12 uA operating current for battery-sensitive applications. Verify that the 280 ms reset delay meets system timing requirements. Ensure the 10% accuracy tolerance aligns with the specific voltage monitoring needs of the target application.

Supervisors Part Context

This device belongs to the DS1819BR series of MicroMonitor circuits designed for simple supervisory tasks. It consolidates power management functions into a compact surface-mount package. The series targets cost-sensitive applications where minimal external components are preferred for voltage supervision and system reset generation.

Supervisors Replacement Considerations

Check for direct pin-compatible alternatives within the DS1819 family. Verify if newer generations offer improved accuracy or extended temperature ranges. Confirm that substitute parts maintain the same SOT-23-5 footprint and electrical characteristics for seamless integration.