UC2543J

Power Supply Controllers, Monitors Overview

The UC2543J is a power supply supervisory circuit manufactured by Texas Instruments. It operates within an input voltage range of 4.5 V to 40 V and draws a supply current of 7 mA. The device features a threshold voltage of 2.5 V and provides an active low, open-drain output type. It monitors one input and is housed in a 16-CDIP package. The component supports operating temperatures from -25°C to +85°C.

Power Supply Controllers, Monitors Feature Summary

• Provides power supply supervision with a fixed 2.5 V threshold voltage
• Features an active low, open-drain output for interface compatibility
• Operates across a wide input voltage range up to 40 V

Power Supply Controllers, Monitors Applications

• Power supply monitoring systems
• Voltage supervisor circuits
• System reset generation

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix J indicates the CDIP-16 package variant when sourcing. Confirm the 2.5 V threshold specification matches the target application requirements. Ensure the active low open-drain output logic aligns with the downstream circuit design. Check temperature ratings against environmental conditions.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring a dedicated supervisor with a 2.5 V trip point. The wide input range suits higher voltage rails. The open-drain output allows flexible pull-up configuration. Consider the through-hole CDIP package for prototyping or specific mechanical constraints.

Power Supply Controllers, Monitors Part Context

This part belongs to the family of power supply supervisory circuits from Texas Instruments. It is designed to monitor voltage levels and assert a signal when thresholds are breached. The UC2543J specifically targets applications needing reliable reset generation or status indication for power rails within its specified operating range.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.