BD5247G-TR Integrated Circuits (ICs)

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Introduction

BD5247G-TR is a System Supervisor for Automotive Applications, belonging to power management integrated circuits (PMIC - Supervisors). This application field and working principle will be discussed in this paper.

Overview of BD5247G-TR

BD5247G-TR is a System Supervisor designed to monitor and control a 3.3V Microcontroller unit applications in a battery operated system. It features a standard watchdog, a reset, a low-battery detector, a power-on reset, Brown-out reset, thermal warning and system reset functions. This IC features a low operating voltage (1.65V to 2.85V) and low static current (2?A max) and delivers high accuracy by using a voltage reference with a precision of ±1.5%.

Applications of BD5247G-TR

BD5247G-TR is ideally suited for applications involving battery operated consumer electronics such as notebooks, PDAs, digital cameras, DVD players and mobile phones. It is also used for automotive applications such as engine control units, airbag systems and steering systems. Furthermore it can be used for industrial applications such as robotics, PLCs and various measurement and counting systems.

Working Principle

The BD5247G-TR functions as a controller that monitors and regulates the voltage input and output to a microcontroller (MCU) on the board. The voltage output range is set by the user by setting two resistors, a pull-up resistor and a pull-down resistor. For example, the user can set the voltage output range to 1.8V to 3.3V.The BD5247G-TR then monitors the input voltage and ensures that the output voltage remains within the given range. If the input voltage is too high or too low, the BD5247G-TR will reset the MCU via the reset pin.

The BD5247G-TR also includes several monitoring functions such as a watchdog timer, low battery detector, power-on reset and a thermal warning. The watchdog timer is used to detect any malfunctions in the system and reset the MCU if necessary. The low battery detector is used to detect when the battery is running low and will either shut down the application or switch to a low power mode to conserve the remaining power. The power-on reset will reset the MCU when the application is powered up. The thermal warning is used to detect if the application is running too hot and will immediately shut down the system.

Conclusion

In conclusion, BD5247G-TR is a versatile System Supervisor designed for applications involving battery operated consumer electronics, automotive applications, and industrial applications. It features a standard watchdog, a reset, a low-battery detector, a power-on reset, Brown-out reset, thermal warning and system reset functions, and is able to monitor and regulate the voltage input and output to a microcontroller (MCU) on the board. BD5247G-TR is an ideal solution for any application needing to monitor, control and protect the MCU.

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