LP3470M5-2.83/NOPB

Supervisors Overview

The LP3470M5-2.83/NOPB is a voltage supervisory circuit manufactured by Texas Instruments, designed for monitoring power supply integrity in electronic systems. It operates within a maximum supply voltage of 5.5 V and features a precise reset threshold of 2.83 V with 1% accuracy. The device utilizes an SOT-23-5 surface-mount package and provides an active-low, open-drain output. Key electrical parameters include a fixed reset delay time of 2 ms, a quiescent current of 16 uA, and a power dissipation rating of 300 mW. It lacks manual reset, watchdog timer, or battery backup switching capabilities. The component supports an operating temperature range from -20°C to +85°C.

Supervisors Feature Summary

• Provides active-low reset signal generation when monitored voltage drops below the specified threshold
• Features high precision voltage monitoring with 1% reset threshold accuracy
• Utilizes low quiescent current consumption suitable for power-sensitive applications
• Offers compact surface-mount packaging for space-constrained designs

Supervisors Applications

• Portable electronic devices requiring reliable power supervision
• Battery-operated systems needing low standby current
• Embedded controllers requiring stable power-on reset sequences
• Industrial control modules operating within extended temperature ranges

Supervisors Procurement Notes

Verify the specific suffix 'M5' indicates the commercial temperature grade (-20°C to +85°C) rather than industrial grade. Confirm RoHS compliance status as indicated in official documentation. Check for obsolete status notifications such as NRND before finalizing procurement plans. Ensure the open-drain output configuration matches the downstream logic requirements without additional pull-up components if necessary.

Supervisors Selection Notes

Select this component when a fixed 2.83 V threshold is required for system stability. Consider the 2 ms fixed delay for timing constraints; adjustable delays require external capacitors on compatible variants. Evaluate the 16 uA quiescent current against total system power budgets. Verify that the SOT-23-5 footprint aligns with existing PCB layout constraints and thermal management strategies.

Supervisors Part Context

This part belongs to the LP3470 family of tiny power-on-reset circuits from Texas Instruments. The family offers various threshold voltages and temperature grades. The LP3470 series is designed for simple, cost-effective voltage supervision in portable and industrial applications. It serves as a fundamental building block for ensuring microcontroller and memory integrity during power transitions.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source material for this specific variant.