Diodes Incorporated APX803L20-29SA-7 Microprocessor Reset Circuit

The APX803L20-29SA-7 is a highly precise microprocessor supervisory circuit designed to monitor the power supply performance of digital systems. Manufactured by Diodes Incorporated, this component ensures that the system's microcontroller or microprocessor resets cleanly during power-up, power-down, or brown-out conditions. It is a vital component for maintaining system reliability and preventing potential issues due to unpredictable power supply levels.

Featuring a fixed factory-set reset threshold voltage of 2.93V, the APX803L20-29SA-7 provides a robust solution to safeguard your system against power supply instability. The device is capable of monitoring the supply voltage of processors that operate at 3.3V and can signal a reset if the voltage falls below the minimum threshold, thus ensuring that the system operates within safe parameters.

One of the key features of the APX803L20-29SA-7 is its low power consumption. This makes it an excellent choice for portable and battery-operated applications where power efficiency is critical. The device is also characterized by its minimal external components requirement, which simplifies the circuit design and helps reduce the overall bill of materials.

Additionally, the APX803L20-29SA-7 offers a reset delay time of 240ms (minimum), which provides sufficient time for the power supply to stabilize before allowing the processor to resume operation. This delay time is crucial in preventing the system from restarting prematurely in the event of short-duration power glitches.

This supervisory circuit is available in a space-saving SOT-23 package, which is ideal for applications with limited PCB space. The APX803L20-29SA-7 is also characterized by its wide operating temperature range of -40°C to +85°C, making it suitable for use in various environments, from industrial to consumer applications.

In summary, the APX803L20-29SA-7 from Diodes Incorporated is a reliable and efficient solution for system power supply monitoring. Its precision voltage monitoring, low power consumption, and compact form factor make it an indispensable component for ensuring the stability and reliability of your digital systems.