ADM1817-20AKS-RL7

Supervisors Overview

The ADM1817-20AKS-RL7 is a microprocessor supervisory circuit manufactured by Analog Devices Inc. It monitors a single voltage input and provides a reset output when the supply voltage drops below a specific threshold. The device features a push-pull output type and operates within a supply voltage range up to 5.5 V. It includes a fixed reset delay time of 250 ms and lacks manual reset or watchdog timer functions. The component is available in an SC-70-3 surface-mount package and supports operation across a temperature range from -40°C to +105°C.

Supervisors Feature Summary

• Monitors power supply voltage levels to ensure system stability
• Provides active-low reset signal via push-pull output
• Operates without requiring external components for basic supervision

Supervisors Applications

• Microprocessor reset generation in embedded systems
• Power supply monitoring for portable electronic devices
• Battery-powered equipment requiring low quiescent current

Supervisors Procurement Notes

Verify end-of-life status and availability through authorized distributors. Confirm RoHS compliance and packaging specifications (Reel/Cut Tape) match production requirements. Check for parameter-equivalent alternatives if original stock is limited. Ensure compatibility with existing PCB footprint and thermal management strategies during integration planning.

Supervisors Selection Notes

Select this component for applications requiring simple, cost-effective voltage supervision with a fixed 250 ms delay. Suitable for designs where manual reset inputs or watchdog timers are unnecessary. Verify that the 2.55 V threshold aligns with the monitored rail's minimum operating voltage. Consider the SC-70-3 package size constraints and operating temperature range for environmental suitability.

Supervisors Part Context

Part of the ADM1817 series of voltage supervisors designed for reliable, low-cost monitoring solutions. The series offers various threshold options to accommodate different standard voltage rails. This specific variant targets applications needing precise supervision around the 2.5 V range with minimal external component count.

Supervisors Replacement Considerations

ADM1817-20AKSZ-R7 is listed as a parameter-equivalent alternative.