LP3470M5-4.63/NOPB

Supervisors Overview

The LP3470M5-4.63/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 an active-low, open-drain output type. The device monitors a single input channel with a precise reset threshold voltage of 4.63 V. It includes a fixed reset delay time of 2 ms to ensure stable system initialization. The component supports surface mount installation in a SOT-23-5 package and functions reliably across a temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides active-low reset signaling via an open-drain output when monitored voltage drops below the specified threshold.
• Features a fixed internal reset delay timer to prevent false triggering during power-up transients.
• Designed for low-power applications with minimal quiescent current consumption suitable for battery-operated devices.

Supervisors Applications

• Microprocessor and microcontroller power supply supervision
• Portable electronic device power management
• Industrial control system voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence as per manufacturer specifications. Confirm the 'M5' variant designation matches the required operating temperature range and package style for your design. Check current lifecycle status, as this part may be marked as Not Recommended for New Designs (NRND). Ensure compatibility with existing PCB footprints for the SOT-23-5 package before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed 4.63 V threshold is required for system reset logic. Consider the fixed 2 ms delay characteristic against application timing requirements. Evaluate the SOT-23-5 package constraints for space-limited designs. Compare against the LP3470A series if programmable delay or improved accuracy is needed instead of fixed parameters.

Supervisors Part Context

This device belongs to the LP3470 family of tiny power-on reset circuits from Texas Instruments. It serves as a dedicated voltage supervisor for ensuring reliable startup sequences in digital logic systems. The family offers various threshold voltages to accommodate different rail levels, with this specific model targeting the 4.63 V level common in 5V nominal systems.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference options through official Texas Instruments channels or authorized distributors for equivalent functionality and pinout compatibility.