Diodes Incorporated APX803L-37SA-7 Microprocessor Reset Circuit

The APX803L-37SA-7 is a highly precise microprocessor supervisory circuit designed by Diodes Incorporated to maintain system integrity during power fluctuations and brown-out conditions. This device is particularly suitable for microprocessor systems, where it can reliably reset a system upon detection of an out-of-tolerance power supply condition, ensuring that the system reboots cleanly on power-up or during an undesired power-down.

Featuring a fixed factory-set reset threshold voltage of 3.7V, the APX803L-37SA-7 is optimized for applications that operate at standard 3.3V power supply voltages but require a slightly higher threshold to account for specific system tolerances or to ensure a wider margin of safety. Its low power consumption and small form factor make it an excellent choice for portable and battery-powered equipment.

The device is housed in a space-saving SOT-23 package, which is both lightweight and compact, allowing for easy integration into a wide range of electronic products without significantly impacting the overall design footprint. With its push-pull active-low output, the APX803L-37SA-7 can directly interface with a microcontroller's reset line, providing a robust and clear signal to initiate a reset sequence.

Key features of the APX803L-37SA-7 include:

• Fixed reset threshold voltage: 3.7V
• Low supply current: ideal for battery-powered applications
• Guaranteed reset output from VCC = 1.0V
• Fast response time to ensure timely system resets
• Temperature range: -40°C to +85°C, suitable for industrial applications
• RoHS compliant and lead-free for environmental consideration

Whether you are designing consumer electronics, communication devices, or industrial control systems, the APX803L-37SA-7 from Diodes Incorporated offers a reliable and cost-effective solution for enhancing system reliability through power monitoring and reset control. Its precision and ease of use make it an essential component for maintaining the operational stability of sensitive electronic systems.