BD5259FVE-TR

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Power management integrated circuit (PMIC) Supervisors, such as the BD5259FVE-TR, provide an array of dedicated enabling, voltage monitoring, and safety features in an integrated package. This PMIC offers fast set-up, accurate control, and reliable monitoring—features that are essential for efficient operation in modern designs. In this article, we’ll explore the applications and working principles of the BD5259FVE-TR power management IC.

Applications

The BD5259FVE-TR is a low-voltage supervisor IC, designed for use in a variety of systems, from consumer electronics to automotive applications. Its primary function is to monitor the power supply so that if it falls below a preset voltage, the IC can trigger an event, such as generating a reset signal or activating a power-down mode. This helps protect the system from potentially damaging over-currents, over-voltages, or other faults.

It can also be used to monitor other critical system parameters, such as temperature, to ensure the system is operating within its normal limits. Additionally, this PMIC can be used in a variety of applications to ensure power system stability, from industrial and automotive power sources to telecommunications and consumer electronics designs.

Working Principle

The BD5259FVE-TR is an integrated, low-power supervisor IC with built-in voltage sensing and tracking for power supply monitoring. The IC contains multiple power pins, allowing it to be used in a wide range of applications. The primary pin is the V POWER pin, which accepts a voltage from 3.2 volts to 11 volts and requires a 20 microamp minimum current draw.

The supervisor comprises five internal voltage detectors and two voltage comparators to detect an input voltage lower than the pre-set level. An undervoltage reset (UVR) is then generated to reset the DC/DC converters and other basic system components. The detect voltage can be adjusted by external resistors, allowing the user to customize the IC to their particular application.

The IC also contains a power-on reset (POR) input, allowing it to be triggered externally by impedance levels or manual reset signals. Additionally, it can be configured to enable other peripheral functions, such as the enablement of an LCD. The IC also contains a watchdog timer, which can be used to detect system lockup and initiate a reset signal.

The BD5259FVE-TR has a wide operating temperature range, from -40 C to +125 C, making it suitable for use in extreme environments. Its power on-reset circuit has a fast adjust time and it requires a low current to operate, making it highly efficient. It also offers high-voltage protection, with an adjustable VUB output of up to 11.2 volts.

Conclusion

The BD5259FVE-TR is a low-voltage supervisor IC designed to monitor and protect power systems. It is suitable for use in a variety of designs, from industrial and automotive applications to consumer electronics and communications. The IC offers a range of features, including an undervoltage reset, power-on reset, and watchdog timer. It has a wide operating temperature range, provides high-voltage protection, and requires a low operating current, making it an ideal power management IC for a variety of designs.

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