SG1548L

Power Supply Controllers, Monitors Overview

The SG1548L-883B is a programmable quad line fault monitor manufactured by Microchip Technology, designed for supervisory circuit applications. It features an LCC-20 surface-mount package and operates within a supply voltage range of 4.5 V to 40 V. The device monitors four inputs with open collector outputs and includes a reset delay time of 25 ms. Key electrical parameters include a threshold voltage of 2.5 V, an overvoltage threshold of 2.625 V, and an undervoltage threshold of 2.375 V. It functions without manual reset or watchdog timer capabilities, drawing a working power current of 4.8 mA across an operating temperature range of -55°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Programmable quad line fault monitoring capability
• Open collector output configuration
• Extended industrial temperature operation

Power Supply Controllers, Monitors Applications

• DC-to-AC system supervision
• Industrial equipment monitoring
• Power management IC subcategory applications

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix (e.g., -883B) against official Microchip documentation to confirm military-grade specifications and compliance requirements. Confirm current availability status as inventory data may be outdated. Ensure the LCC-20 package footprint matches the design constraints. Validate that the absence of manual reset and watchdog features aligns with the system architecture before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when a quad-input supervisory function with programmable thresholds is required in harsh environments. The wide supply voltage range up to 40 V supports high-voltage DC systems. Consider the lack of integrated watchdog and manual reset features when designing the control logic. The extended temperature range makes it suitable for demanding industrial and aerospace applications where standard commercial parts may fail.

Power Supply Controllers, Monitors Part Context

The SG1548L belongs to Microchip's supervisory circuits portfolio, specifically categorized under PMIC - Power Management ICs. It serves as a voltage monitor for detecting line faults in multi-rail or complex power distribution networks. As part of the broader Microchip technology lineup, it complements other power management solutions by providing reliable fault detection and signaling for system protection.

Power Supply Controllers, Monitors Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.