BU4243F-TR

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PMIC (Power Management IC) supervisors help manage the voltages on a board, ensuring those voltages stay within an acceptable range to avoid damage to components on the board. The BU4243F-TR is a single IC suitable for use in a variety of applications, such as automotive and industrial microcontroller-based systems. It provides a wide range of features and a low current consumption. It is highly versatile and capable of regulating a wide variety of voltages.

The BU4243F-TR monitors and regulates two different power regulators, a main one and standby one, supply lines as well as system power supply voltage. The user can select the current trip circuit method using the built-in gate driver with the registers. The BU4243F-TR also supports a selectable temperature warning circuit to detect an overheating situation.

The BU4243F-TR’s main features include an integrated Brown Out detector that detect when there is insufficient supply voltage, an Over Voltage Protection that detects when there is an overvoltage condition, a Soft Start feature that gradually steps up the output voltage, and a 3-state reset circuit that can be used to enable/disable resetting of the MCU.

The BU4243F-TR has a built-in oscillator and 4-bit register that are used in setting the protection condition and delay times. When the conditions of protection and the delay times are chosen, the BU4243F-TR sends a signal to the reset pin on the MCU in order to reset the system. It can be set to reset the system from a minimum of 12µs to a maximum of 500µs.

The BU4243F-TR can be grounded to a logic level for resetting the output. This is done by the logic enable trigger. Depending on the voltage level, this trigger can be used as an enable or disable signal in order to control the operation of the supervisor IC. It also has an adjustable output voltage level which can be controlled by adjusting a single external capacitor.

The BU4243F-TR comes with a watchdog timer circuit as well. This watchdog timer is run on the VDD supply line and can be used to prevent accidents or malicious software from affecting the performance of the current application. The watchdog timer can be programmed to send a reset signal to the MCU if it fails to detect a certain software code or certain hardware states within a predetermined period of time.

The BU4243F-TR also has short-circuit protection. This protection prevents the current from flowing between two stages when an opening of the internal switches occurs.The BU4243F-TR is ideal for applications requiring additional power supply voltage protection and voltage level accuracy that varies within wide ranges.

In conclusion, the BU4243F-TR is a single IC supervisor capable of managing the voltages on a board. Features such as the built-in Brown Out detector, Over Voltage Protection, Soft Start and 3-state reset circuit give the user control over their system, while the built-in oscillator and 4-bit register provide the flexibility needed to customize the protection conditions. Additionally, the watchdog timer and short-circuit protection allow the BU4243F-TR to provide extra protection against unwanted power supply voltages and unexpected opening and closing of the internal switches.

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