DS1815-20+

Supervisors Overview

The DS1815-20+ is a fixed-threshold power supply supervisor manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.7V to 5.5V and features a push-pull output configuration. The device provides a reset signal with a minimum timeout of 100ms, triggered at a threshold voltage of 2.55V. Designed for surface-mount or through-hole applications, it functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Generates a system reset signal upon detection of power supply under-voltage conditions
• Utilizes a push-pull output stage for active drive capability
• Provides a fixed reset timeout period ensuring stable power-up sequencing

Supervisors Applications

• Microprocessor and microcontroller power supply monitoring
• Battery-powered equipment supervision
• Embedded system reset circuitry

Supervisors Procurement Notes

Verify the specific suffix designation against official datasheets to confirm package type and tape/reel specifications. Confirm RoHS compliance status and lead-free manufacturing details directly with the manufacturer or authorized distributors prior to procurement. Ensure the component matches the required operating temperature range and output configuration for the target application.

Supervisors Selection Notes

Select this component when a fixed 2.55V threshold is required for system supervision. Consider the push-pull output requirement versus open-drain alternatives. Evaluate the physical package constraints against available board space. Verify that the 100ms minimum timeout aligns with the system's power-up stability requirements.

Supervisors Part Context

This part belongs to the EconoReset family of supervisory circuits designed for cost-sensitive applications. It simplifies power management by integrating threshold detection and timing functions into a compact form factor. The series supports various packages including SOT-23 and TO-92 variants.

Supervisors Replacement Considerations

DS1815R-20+T&R; and DS1815Z-20 are documented equivalents within the same product family offering similar supervisory functions.