Product Overview: APX803-44SRG-7 from Diodes Incorporated

The APX803-44SRG-7 is a high-performance microprocessor supervisory circuit designed by Diodes Incorporated to monitor the power supply voltage levels in digital systems. It is particularly useful in applications that require precise voltage monitoring to ensure reliable operation, such as in embedded systems, portable devices, and microprocessor-based equipment.

This device offers a fixed threshold voltage of 4.4V, which makes it suitable for systems operating at 5V nominal levels. When the supply voltage drops below the 4.4V threshold, the APX803-44SRG-7 asserts a reset signal, which remains active until the supply voltage recovers and stabilizes above the threshold level for a specified period, known as the reset timeout delay. This feature helps to prevent system errors and data corruption during power-up, power-down, and brown-out conditions.

The APX803-44SRG-7 comes in a compact, surface-mount SOT-23 package, which is ideal for space-constrained applications. Its low power consumption and wide operating temperature range of -40°C to +85°C make it an excellent choice for battery-powered and industrial applications.

Key features of the APX803-44SRG-7 include:

• Precision monitoring of 4.4V power supplies
• Low supply current of 10µA (typical), which enhances battery life
• Asserted reset signal (active-low) ensures system stability
• Minimum reset timeout delay of 240ms, providing system recovery time
• High threshold accuracy of ±1.5% at room temperature
• RoHS-compliant and lead-free for environmental sustainability

The APX803-44SRG-7 is a reliable and precise solution for system voltage monitoring, offering designers a combination of performance, efficiency, and compactness. With its robust feature set, it is a key component in maintaining the integrity of electronic systems during adverse power conditions.