LP3470IM5X-4.00/NOPB

Supervisors Overview

The LP3470IM5X-4.00/NOPB is a voltage supervisory circuit manufactured by Texas Instruments, formerly National Semiconductor. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage of 4.00 V for monitoring a single input channel. The device provides an active-low reset signal with an open-drain output configuration. It includes a minimum reset delay time of 1 ms to ensure stable power-up sequencing. The component is designed for surface-mount installation in SOT-23-5 packages and supports junction temperatures ranging from -20°C to 85°C.

Supervisors Feature Summary

• Provides active-low reset signals via open-drain output for reliable logic interfacing
• Monitors a single voltage input channel with a fixed threshold setting
• Ensures system stability through programmable or fixed reset delay timing

Supervisors Applications

• Embedded systems requiring precise power-on reset sequencing
• Portable electronic devices utilizing low-voltage battery supplies
• Industrial control circuits needing voltage supervision under varying thermal conditions

Supervisors Procurement Notes

Verify the manufacturer origin carefully as this part originates from the National Semiconductor lineage now managed by Texas Instruments. Confirm the specific suffix matches the required threshold voltage and package variant. Check current lifecycle status as older revisions may be discontinued or recommended against new designs. Ensure compatibility with RoHS standards if required for your region.

Supervisors Selection Notes

Select this component when a fixed 4.00 V threshold is required for single-channel monitoring. Consider the SOT-23-5 package constraints for space-limited PCB layouts. Evaluate the -20°C to 85°C operating temperature range against your environmental requirements. Compare reset delay characteristics with other supervisors if precise timing margins are critical for your application logic.

Supervisors Part Context

This supervisor belongs to the LP3470 family of simple reset/power-on-reset ICs. These devices are designed for cost-sensitive applications requiring basic voltage monitoring without complex watchdog or manual reset features. The family typically offers various threshold options to accommodate different standard voltage rails in consumer and industrial electronics.

Supervisors Replacement Considerations

Public confirmed substitutes include TPS389001DSER from Texas Instruments.