BU4917G-TR

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The BU4917G-TR is a two-channel rail-to-rail supervisory circuit from Toshiba that is designed to protect digital systems from reset loss. Powered by a wide voltage range from 2.0V to 6.0V, theBU4917G-TR helps to maintain system safety and reliability when reset fails to occur.

Application fields:

The BU4917G-TR is suitable for a variety of applications, including computers, home appliances, cell phones and other electronic products. With its low power consumption and a wide temperature operating range, the BU4917G-TR is able to meet the demands of power hungry systems and diverse environmental conditions.

Specifically, the device is used in failure monitoring applications to detect voltage or current problems such as sudden power off or under-voltage. As a reset circuit, it can detect all types of reset conditions such as low supply voltage, external power on/off, manual reset and power supply failure. This makes it particularly suited for monitoring the health of systems with multiple power supply levels. Additionally, it can be used in consumer systems, industrial systems, and automotive systems.

Working Principle:

The BU4917G-TR features two independent and complementary reset circuit blocks. Each block has two stages: the internal reset generator and the output latch. The reset generator compares the input voltage of the system to the voltage of an internal reference voltage, triggering the reset when it is lower than the voltage limit.

The output latch is then activated when the reset occurs. This reset generator and output latch combination ensures that any voltage glitch, over-voltage or under-voltage generated in the system is detected and that the reset is triggered and held until the input voltage has been restored.

The BU4917G-TR also features an adjustable delay timer with a wide range of reset timing. This is useful for high-speed processors, as the reset can be utilized to slow down the system even in high-frequency conditions. In addition, the BU4917G-TR can detect over-voltage and under-voltage, allowing for maximum system safety.

The BU4917G-TR also offers a comprehensive protection package. This allows users to protect circuits against reverse polarity and short-circuiting. In addition, the device offers protection against reverse-voltage and electronic static discharge (ESD) or electrostatic discharge (EOS) protection. This allows users to ensure maximum system safety, even in the most challenging environments.

Conclusion:

The BU4917G-TR supervisory circuit from Toshiba is a highly efficient and reliable reset generator and output latch combination. It is designed to protect digital systems from reset loss and meet a variety of application requirements. Furthermore, it is capable of monitoring multiple power supply levels and offers protection against reverse polarity, short-circuiting and ESD/EOS. With its low power consumption and wide temperature operating range, it is the perfect solution for failure monitoring applications.

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