ADM1817-R22AKS-RL7

Supervisors Overview

The ADM1817-R22AKS-RL7 is a voltage supervisory circuit manufactured by Analog Devices Inc., designed to monitor a single power supply rail. It operates within a maximum supply voltage of 5.5 V and features a threshold voltage of 2.2 V. The device provides a push-pull output with a reset delay time of 250 ms. It supports an operating temperature range from -40°C to +105°C and is housed in a compact SOT-23-3 surface-mount package. The component draws a typical quiescent current of 16 µA and lacks manual reset, watchdog timer, or battery backup switch functionalities.

Supervisors Feature Summary

• Monitors a single input voltage rail for under-voltage conditions
• Provides a deterministic reset signal via a push-pull output driver
• Operates across an extended industrial temperature range

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific suffix 'R22' confirms the 2.2 V threshold variant, as the ADM1817 series offers multiple fixed thresholds. Confirm availability status, as this part number may be discontinued or subject to limited supply constraints depending on the distributor. Ensure the SC-70-3/SOT-23-3 package footprint matches the design requirements.

Supervisors Selection Notes

Select this component when a simple, low-power supervisor is required for a single voltage rail without complex sequencing or watchdog features. The 2.2 V threshold suits applications where the monitored rail drops below standard logic levels. Consider the 250 ms delay for systems requiring stable power before initialization.

Supervisors Part Context

This part belongs to the ADM1817 family of voltage supervisors from Analog Devices. These devices are engineered for cost-sensitive applications requiring reliable power monitoring in small form factors. The RL7 designation indicates reel packaging for automated assembly processes.

Supervisors Replacement Considerations

ADM1817-R22AKSZ-R7 is listed as a parameter-equivalent alternative.