The ASM809LEURF-T from ON Semiconductor is a highly precise microprocessor (µP) supervisory circuit designed to monitor the power supplies in digital systems. It provides an essential function by asserting a reset signal whenever the VCC supply voltage declines below a preset threshold, ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions.

Key Features

• Precision Monitoring: This device features a precision voltage monitor that caters to 3.08V, ensuring consistent and reliable operation.
• Low Power Consumption: With a low supply current of 20 µA, it's an energy-efficient choice for battery-operated applications.
• Reset Time Delay: The integrated 140 ms minimum reset time delay ensures that the system has sufficient time to stabilize before returning to operation.
• High Threshold Accuracy: The voltage threshold accuracy is maintained at ±2% over temperature, which is critical for systems that require consistent performance across different operating conditions.
• Versatile Operating Range: The ASM809LEURF-T operates over a wide voltage range, making it suitable for a variety of applications.
• Temperature Resilience: It is designed to operate over a temperature range of -40°C to +85°C, ensuring functionality in diverse environments.

Applications

The ASM809LEURF-T is ideal for use in a variety of applications where reliable voltage monitoring is critical. These include:

• Computers and Controllers
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Medical Equipment
• Automotive Systems

Package Information

The device is available in a compact SOT-23 package, which is suitable for space-constrained applications. The package is RoHS compliant and designed for surface-mount technology (SMT), facilitating easy integration into various circuit designs.

With its robust feature set and ON Semiconductor's reputation for quality, the ASM809LEURF-T is a dependable component for any system requiring accurate voltage supervision to ensure safe and proper operation.