SP813LEN-L/TR

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The PMIC - Supervisors, SP813LEN-L/TR, is a supervisor designed to meet the requirements arising from the development of low power, high performance microprocessors. This supervisor is a low cost, easy to implement solution for monitoring the status of micro processors to ensure reliability and increase system performance.

The SP813LEN-L/TR has an integrated FET driver and Power Failure Reset feature that ensures immediate shut down of the system in the event of a power failure. The solution also integrates a low power sleep mode, providing a solution for safe sleep powering up in the event of a power failure. Additionally, this supervisor has an on-chip power-on reset which provides system reset and functions as a safety switch when required in event of a system failure.

The application field of SP813LEN-L/TR is wide. It can be used in security, networking and consumer electronics applications such as digital TV, Set-top boxes, digital audio players, mobile phones, and white goods. The supervisor is suitable for applications that require a reliable solution with a minimum number of external components.

The SP813LEN-L/TR works by monitoring an input voltage, usually derived from the power supply. This voltage is compared against a threshold voltage set by an external resistor. When the supply turns on, the capacitor used for the reset circuit is charged, setting the voltage to the trip level. The output Shutdown signal is then asserted and the system is reset.

When the input voltage is below the trip level, the shutdown signal is deasserted and the reset signal is active. This reset signal is held for a predetermined amount of time, which is set by an external resistor and capacitor. The amount of time that the reset signal is active allows the system to safely boot up and start functioning.

When the input voltage is above the reset voltage, the reset signal is deasserted and the shutdown signal is active. This ensures that the system is immediately shut down in the event of a power failure.

The SP813LEN-L/TR also offers a low power sleep mode, allowing it to enter a low power state when the system is not in use. This power saver feature allows for a reduced power consumption, extending battery life in mobile applications.

The SP813LEN-L/TR is a reliable and cost effective solution for the protection and reset of digital systems. With an integrated FET driver, power failure reset, and low power sleep mode, this supervisor is the ideal solution for many security, networking and consumer electronics applications.

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