DS1812-5+

Supervisors Overview

The DS1812-5+ is a single-channel voltage supervisor integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and features a fixed threshold voltage of 4.62V for power monitoring. The device provides a push-pull/totem pole output with an active-high reset signal. It includes a minimum reset timeout delay of 100ms to ensure system stability during power transitions. Designed for surface-mount installation, it utilizes a compact SOT-23-3 package. The component supports an operating temperature range from -40°C to +85°C and complies with RoHS3 standards.

Supervisors Feature Summary

• Provides simple reset or power-on-reset functionality for monitored voltage rails
• Features a push-pull or totem pole output configuration for direct logic interfacing
• Generates an active-high reset signal upon detecting undervoltage conditions

Supervisors Applications

• Microprocessor and microcontroller power supply supervision
• Battery-powered equipment voltage monitoring
• Portable electronic device power management

Supervisors Procurement Notes

Verify the specific suffix designation when ordering, as variations such as DS1812R-5+T&R indicate tape-and-reel packaging while other suffixes may denote tube packaging. Confirm that the required package type matches the target PCB footprint. Ensure the selected variant meets the necessary environmental compliance standards for the intended deployment region. Cross-reference the manufacturer part number with distributor catalogs to confirm current availability status.

Supervisors Selection Notes

Select this component when a single-channel supervisory function with an active-high output is required. The fixed 4.62V threshold suits standard 5V logic systems. Consider the SOT-23-3 package size for space-constrained designs. Evaluate the 100ms minimum reset timeout against system startup requirements. Verify compatibility with the target operating temperature range before finalizing the design.

Supervisors Part Context

This component belongs to the EconoReset series of voltage supervisors. It serves as a fundamental building block for ensuring reliable system initialization in digital circuits. The series offers various threshold voltages and output configurations to accommodate different power rail architectures. It is designed for cost-sensitive applications requiring basic power monitoring without complex programmability.

Supervisors Replacement Considerations

Compatible substitutes include the DS1233Z-5+, which offers similar supervisory functions but features an open-drain output and a longer reset delay. Designers must account for differences in output drive capability and timing characteristics when transitioning between these variants.