LP3470M5X-4.00/NOPB

Supervisors Overview

The LP3470M5X-4.00/NOPB is a voltage supervisory circuit manufactured by Texas Instruments, designed to monitor power supply integrity in electronic systems. It features an active-low reset output with open-drain configuration and a precise 1% reset threshold accuracy. The device operates within a supply voltage range up to 5.5 V and supports a programmable reset delay time of 1 ms minimum via an external capacitor. It is housed in a compact SOT-23-5 surface-mount package and functions reliably across a temperature range of -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 with 1% reset threshold accuracy for reliable power management
• Allows adjustable reset timeout duration through connection of an external capacitor
• Utilizes low-power architecture suitable for battery-operated or energy-efficient applications

Supervisors Applications

• Monitoring microprocessor and microcontroller power supplies
• Ensuring system stability in portable electronic devices
• Providing power-fail detection in embedded control systems

Supervisors Procurement Notes

Verify component authenticity by checking manufacturer markings and datasheet specifications against official Texas Instruments documentation. Confirm package type matches SOT-23-5 and ensure operating temperature range aligns with application requirements. Cross-reference part numbers to avoid confusion with similar variants in the LP3470 family.

Supervisors Selection Notes

Select this component when a simple, low-cost supervisor with fixed threshold and programmable delay is required. Ensure the 5.5 V maximum input voltage suits the system rail. Verify that the open-drain output interface is compatible with the downstream logic levels. Consider thermal performance within the -20°C to +85°C range for environmental compliance.

Supervisors Part Context

This part belongs to the LP3470 series of ultra-low-power supervisors from Texas Instruments. It serves as a dedicated power management IC for detecting under-voltage conditions. The device complements other TI monitoring solutions by offering a balance of precision and simplicity without requiring complex configuration interfaces.

Supervisors Replacement Considerations

The TPS389001DSER is identified as a potential substitute. Verify pin compatibility and electrical parameters before implementation.