TPS3809I50DBVRG4

Supervisors Overview

The TPS3809I50DBVRG4 is a supply voltage supervisor from Texas Instruments designed for monitoring single-channel input voltages. It operates within a supply voltage range of 2 V to 6 V and features a threshold voltage of 4.55 V with an overvoltage threshold of 4.65 V. The device provides an active low, push-pull reset output with a fixed reset delay time of 200 ms. It has no manual reset or watchdog timer capabilities. The component functions in temperatures from -40°C to +85°C, draws 9 uA of quiescent current, and maintains accuracy of 2.2%. It is housed in a SOT-23-3 package.

Supervisors Feature Summary

• Provides active low push-pull reset signaling for monitored supply rails
• Features fixed 200 ms reset delay to ensure stable power-up sequences
• Operates with ultra-low 9 uA quiescent current consumption
• Delivers precise voltage supervision with 2.2% accuracy

Supervisors Applications

• Portable battery-powered equipment requiring low standby current
• Microcontroller system power management
• Embedded logic circuit protection

Supervisors Procurement Notes

Verify the G4 suffix indicates lead-free and RoHS compliance per Texas Instruments standards. Confirm the I50 designation matches the required 4.55 V threshold for your specific application. Check the datasheet for the latest lifecycle status as this part may be subject to obsolescence notices. Ensure the SOT-23-3 footprint aligns with your PCB design constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when a simple, low-cost supervisor with a fixed threshold is sufficient. It lacks manual reset and watchdog features found in other series members. Choose this variant if the 200 ms delay meets system timing requirements. Verify that the 6 V maximum operating voltage covers your peak supply conditions. Consider alternative packages if higher pin counts are needed for additional features.

Supervisors Part Context

This device belongs to the TPS3809 family of simple supervisors. It differs from the TPS3808 by lacking programmable delays and manual reset inputs. It also differs from the TPS3823 series which includes watchdog timers and manual reset options. The TPS3809 focuses on basic voltage monitoring with minimal external components. It serves as a foundational solution for standard power sequencing needs.

Supervisors Replacement Considerations

TPS3809I50DBVR is the non-G4 equivalent version. TPS3809J25/L30/K33 variants offer different threshold voltages but share the same package and functionality.