SP691ACN-L

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The SP691ACN-L application field and working principle found in PMIC - supervisors are ideal for design engineers wanting a reliable, yet simple solution for their project. The general purpose application of the SP691ACN-L can be used to monitor an overall systems power supply against an overvoltage or undervoltage, as well as against an input failure or a phase-loss condition. Being an integrated device, the SP691ACN-L contains Open-Drain type outputs with an output sourcing current of up to 24mA. This makes it a highly efficient choice, when compared to conventional discrete solutions.

In general, the SP691ACN-L is a 3-terminal integrated circuit that, when connected to a suitable power supply, provides a regulated output voltage or monitoring reference voltage. It is designed to detect and monitor undervoltage and overvoltage, as well as input failure or phase-loss conditions. As each of these conditions is detected, the SP691ACN-L tracks the power supply voltage and produces an output signal referred to as OV and UV, indicating the status of the power supply.

The main purpose of the SP691ACN-L is to provide accurate and dependable tracking of the power supply voltage without an external reference voltage. To achieve this, the on-chip voltage regulator regulates the input voltage and converts it to a reference voltage applied to the monitor point. The SP691ACN-L then compares the monitor point voltage to its reference voltage, producing signals indicating the status of the power supply. An overvoltage signal is generated when the power supply voltage exceeds the reference voltage and a undervoltage signal is generated when the power supply voltage falls below the reference voltage.

In addition to its overvoltage/undervoltage monitoring capabilities, the SP691ACN-L also provides fast and accurate input failure/phase-loss detection. When connected to the power supply, it monitors the power supply voltage to detect input failure or phase-loss conditions. If an input failure or phase-loss occurs, the SP691ACN-L produces a signal indicating the condition. This signal can then be used to reset the system, or take other corrective actions.

When it comes to electrical performance, the SP691ACN-L offers excellent accuracy and reliability. The input voltage range is from -50V to +85V, allowing for a broad range of applications. The accuracy of the SP691ACN-L\'s UV/OV monitoring is +/-5% over the entire temperature range of -40°C to +85°C, making it ideal for high-precision control systems. The response time is also very fast, typically less than 2ms.

In summary, the SP691ACN-L is an excellent choice for designers looking for an efficient, reliable, and cost-effective solution for monitoring the power supply of their system. It has a wide input voltage range and a high level of accuracy over a wide temperature range, making it ideal for industrial, automotive, and avionic systems. In addition, its fast response time means it can effectively detect input failure and phase-loss conditions.

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