ADM809-5LARTZ-RL7

Supervisors Overview

The ADM809-5LARTZ-RL7 is a voltage supervisory circuit from Analog Devices, designed to monitor power supply voltages in microprocessor systems. It operates within a maximum supply voltage of 5.5 V and features a threshold voltage of 4.06 V with an accuracy of 1.5%. The device provides a push-pull reset output with a fixed delay time of 240 ms. It consumes a typical operating supply current of 60 uA and functions reliably across a temperature range of -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount case, it lacks manual reset, watchdog timer, or battery backup switching capabilities.

Supervisors Feature Summary

• Monitors power supply voltage to provide reset signals during power-up, power-down, and brown-out conditions
• Delivers a deterministic reset pulse with a fixed internal timer delay for stable system initialization
• Operates with low quiescent current consumption suitable for battery-powered applications
• Provides a push-pull output stage for direct interfacing with microprocessor reset pins

Supervisors Applications

• Microprocessor system power monitoring
• Battery-operated electronic devices requiring voltage supervision
• Portable equipment with strict power management requirements

Supervisors Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when ordering. Confirm the 5L designation corresponds to the correct threshold voltage variant required by your design. Ensure compatibility with the SOT-23-3 footprint during PCB layout. Cross-reference the datasheet for absolute maximum ratings to prevent damage during operation.

Supervisors Selection Notes

Select this component when a fixed threshold near 4.06 V is required for 5V logic systems. Consider the 240 ms delay duration against your processor startup time requirements. Evaluate the 60 uA standby current impact on overall system efficiency. Verify that the push-pull output drive capability meets the input requirements of the target microcontroller.

Supervisors Part Context

This part belongs to the ADM809 series of supervisory circuits manufactured by Analog Devices. These devices are engineered specifically for monitoring single power rails in digital systems. The series offers various threshold options to accommodate different voltage levels while maintaining consistent performance characteristics across the family.

Supervisors Replacement Considerations

Check for ADM809 variants with different threshold suffixes if the 4.06 V level is unsuitable. Verify pinout compatibility with existing designs before substituting. Ensure replacement parts maintain the same SOT-23-3 package and electrical specifications.