BD5344FVE-TR

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Power Management Integrated Circuits (PMIC) play a key role in the electronics industry. A PMIC is an integrated circuit that manages the power used by a device. The capabilities of a PMIC vary from device to device, but generally include power conversion, power monitoring and control, power switching, and voltage regulation. Supervisors are PMICs designed to control the state and activity of an electronic system. Specifically, they are used to monitor and reset a system when it experiences a fault. The BD5344FVE-TR is a supervisor IC designed to provide system reset and voltage detection functions.

The BD5344FVE-TR is targeted specifically at mobile devices, such as smartphones and tablets, where space is a premium. It provides independent reset functions for the main system and its subsystems. Additionally, it supports low-voltage reset detection and generation, with reset thresholds that are adjustable via external resistors. The reset functions are provided through push-pull CMOS outputs.

The application field of the BD5344FVE-TR includes a variety of mobile platforms, such as mobile phones, Tablet PCs, Game consoles, Video equipments and various other platforms. Additionally, it is applicable in high-end consumer electronics, industrial fire panels, aerospace and military systems.

The working principle of the BD5344FVE-TR is based on two main features: reset and voltage detection. It incorporates an independent reset signal output which is activated when the voltage at the VIN pin falls below a programmable threshold. Additionally, it has a full-chain supervisor circuit including a voltage monitor, a digital process, and a CMOS output stage, providing accurate reset response and system stability. The voltage detection function is also available with adjustable reset thresholds for both system and reset voltages.

The BD5344FVE-TR also includes other safety features such as watch-dog timer, power on reset, reset unlock and burst mode. The watch-dog timer monitors system activity by periodically restarting the system when it enters an abnormal state. The power-on reset is activated when VIN rises above the trigger voltage, while the reset unlock is designed to prevent the reset signal from being trapped if the system fails. The burst mode reduces the current consumption by operating the output reset signal in a “burst” format.

In conclusion, the BD5344FVE-TR is a supervisor IC designed to provide system reset and voltage detection functions. It is designed to be used in mobile platforms such as smartphones and tablets, and is also suitable for industrial fire panels, aerospace and military systems. Its working principle is based on two main features: reset and voltage detection, with additional safety features such as watch-dog timer, power-on reset, reset unlock and burst mode.

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