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 monitoring power rails. The device provides a push-pull or图腾柱 output with an active-high reset signal, ensuring reliable system recovery during brown-out events. A minimum reset timeout of 100ms is guaranteed to allow sufficient time for power stabilization before asserting the reset line. Designed for surface-mount applications, it utilizes a compact SOT-23-3 package (TO-236-3/SC-59) to facilitate space-constrained PCB layouts. The component supports an operating temperature range from -40°C to +85°C, making it suitable for industrial and commercial environments.

Supervisors Feature Summary

• Provides simple reset and power-on-reset functionality with a fixed threshold voltage.
• Features an active-high reset output with a push-pull configuration.
• Includes a minimum reset timeout duration to ensure stable power-up sequences.

Supervisors Applications

• Microprocessor system supervision
• Portable equipment power management
• Battery-powered device monitoring

Supervisors Procurement Notes

Verify the specific suffix designation when ordering, as variations such as 'R' indicate tape-and-reel packaging while other suffixes may denote tube packaging. Confirm that the required operating temperature range aligns with the standard -40°C to +85°C specification. Ensure compatibility with the SOT-23-3 footprint on the target printed circuit board. Check for RoHS compliance status if environmental regulations apply to the final assembly. Validate that the 4.62V threshold matches the monitored rail voltage requirements of the design.

Supervisors Selection Notes

Select this component when a fixed voltage threshold near 4.62V is required for systems powered by 5V rails. The SOT-23-3 package is ideal for designs prioritizing minimal board space. Consider the active-high output polarity to ensure correct interfacing with downstream logic gates or microcontroller reset pins. Evaluate the 100ms minimum timeout against the system's power-up ramp-up time to prevent premature resets. This part is suitable for applications requiring basic supervision without programmable thresholds.

Supervisors Part Context

The DS1812 belongs to the EconoReset series, which focuses on cost-effective voltage monitoring solutions. It serves as a fundamental building block for power management in embedded systems where precise programmability is unnecessary. The series typically offers various threshold options to accommodate different standard voltage rails. As a single-channel device, it simplifies design complexity compared to multi-supervisor ICs. Its integration into the Analog Devices portfolio follows Maxim Integrated's legacy in power management components.

Supervisors Replacement Considerations

Consult official manufacturer cross-reference lists for verified substitutes. Generic equivalents may differ in threshold accuracy or output drive strength. Verify pinout compatibility before swapping to avoid circuit damage. Ensure replacement parts meet the same thermal and electrical specifications.