onsemi 1 Voltage Supervisor Microprocessor Reset Monitor 3-Pin SC-70 Package 3.24 V MAX809SQ308T1G

The onsemi MAX809SQ308T1G is a high-performance 1 Voltage Supervisor designed for microprocessor systems to monitor power supply voltage and ensure stable operation within a 3-Pin SC-70 surface mount package. This voltage supervisor integrates a microprocessor reset monitor function with a reset threshold voltage precisely set at 3.24 V and monitored voltage at 3.08 V, making it ideal for desktop computers, laptops, portable battery-powered equipment, and other electronic devices requiring power monitoring.

Operating from a minimum supply voltage of 1.2 V up to 5.5 V, this device provides flexible usage in a wide range of power supply conditions. Its output driver features active low, push-pull technology, which provides a robust reset signal to microcontrollers and systems. The reset active time is optimized at 460 ms ensuring the reset signal duration adequately stabilizes the system.

With a compact footprint of 2.2 mm length, 1.35 mm width, and 900 μm height, packaged in RoHS-compliant SC-70, this voltage supervisor is suitable for high-density PCB layouts. It operates reliably over the extended temperature range from -40°C to 105°C, supporting demanding industrial and automotive applications where environmental conditions vary significantly.

The MAX809 series from onsemi is a trusted family of microprocessor supervisory circuits, and this specific model MAX809SQ308T1G provides essential power-fail detection and supervisory functionality without a watchdog timer or manual reset. These characteristics make it valuable for industrial machines, computing devices, laboratory instruments, and commercial electronics where power supply monitoring is critical to operational safety and reliability.

Monitors the supply voltage and generates reset signals for system supervision. 3-Pin SC-70 surface mount package for compact system integration. Reset threshold at 3.24 V with monitored voltage set at 3.08 V ensures tight power supervision.

Wide operating temperature from -40°C to 105°C for various industrial environments. Active low output driver with push-pull design for reliable reset signals. Power supply voltage operating range from 1.2 V to 5.5 V. Complies with RoHS directives for environmental safety.

Ideal for power monitoring in desktop, portable, automotive, and industrial applications.

This voltage supervisor is appropriate for electronics engineers and product designers seeking stable power management solutions with precise voltage monitoring and reset capabilities. Explore more Voltage Supervisors and related components in the Electronics & Electricals Power Management ICs category at EnvMart.