LP3470M5-2.93

Supervisors Overview

The LP3470M5-2.93 is a micropower CMOS voltage supervisory circuit designed to monitor power supplies in microprocessor and memory applications. It features an active-low reset output with a fixed threshold of 2.93 V and a programmable delay. The device operates within a supply voltage range up to 5.5 V and supports a -20°C to +85°C industrial temperature range. Packaged in a compact SOT-23-5, it provides reliable system reset generation without requiring external components.

Supervisors Feature Summary

• Active-low open-drain reset output for direct interface with digital logic
• Fixed reset threshold voltage ensures precise monitoring of supply rails
• Programmable reset delay allows customization of recovery timing
• Micropower consumption suitable for battery-operated systems

Supervisors Applications

• Microprocessor power supply monitoring
• Memory backup switching circuits
• Portable electronic devices requiring low quiescent current
• Industrial control systems operating in extended temperature ranges

Supervisors Procurement Notes

Verify the manufacturer origin as National Semiconductor or Texas Instruments, noting that TI acquired NS. Confirm the package type is SOT-23-5 and the reset threshold is exactly 2.93 V. Check for the NOPB suffix indicating lead-free compliance. Ensure the temperature grade matches the M5 variant (-20°C to +85°C). Validate datasheet revision against official TI documentation to avoid obsolete specifications.

Supervisors Selection Notes

Select this component when a fixed 2.93 V threshold is required for low-voltage monitoring. The SOT-23-5 package offers space efficiency for portable designs. Consider the programmable delay feature if specific reset timing is needed relative to power-up. Verify compatibility with the target system's logic levels due to the open-drain output structure.

Supervisors Part Context

The LP3470 series includes variants with different fixed thresholds (e.g., 2.63 V, 4.63 V) and temperature grades (IM5 for -40°C to +85°C). The M5 suffix denotes the industrial temperature range. This part belongs to the broader LP3470 family of micropower supervisors, sharing core functionality but differing in threshold accuracy and operating conditions.

Supervisors Replacement Considerations

Direct substitutes include LP3470M5-2.63/NOPB and LP3470M5-4.63/NOPB for different threshold requirements. For wider temperature ranges, consider the IM5 variants such as LP3470IM5-2.93/NOPB. Ensure pinout compatibility with SOT-23-5 packages when replacing.