MB3793-30APNF-G-JN-ER6E1

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MB3793-30APNF-G-JN-ER6E1 Application Field and Working Principle

Power management integrated circuits (PMICs) are an essential component of a modern system. They can mainly be divided into several categories such as DC-DC converters, regulators, controllers, supervisors, etc. The supervisory component is essential in controlling the flow of currents and voltages in the circuit and ensuring that it remains within the necessary limits.The MB3793-30APNF-G-JN-ER6E1 is a supervisor PMIC manufactured by Fujitsu, which is suitable for different applications such as digital home appliances, mobile phones, computers, printer boards, and metering systems. The device has an operating range of 2.7V to 5.5V and provides a reset signal when the voltage drops below a certain threshold. This PMIC consists of a voltage monitor, a pre-drive circuit, a voltage detector and control circuits. The voltage monitor is the most important component of the supervisor as it provides a reference voltage for the reset circuit. This reference voltage is divided into three levels, namely, reset threshold voltage, delay reset voltage and reset release voltage. These are determined by the manufacturer for different applications. The pre-drive circuit is used to output a reset signal from the voltage monitor to the voltage detector. It also prevents noise from entering the reset circuit. The voltage detector then detects the reset threshold voltage and generates a reset signal when the voltage drops below the preset threshold. The control circuit is responsible for the reset time setting. It controls the time period during which the reset signal needs to be generated. It also acts as an overshoot circuit, which ensures that the voltage remains within the necessary range even when the power supply fluctuates. The MB3793-30APNF-G-JN-ER6E1 is suitable for applications such as digital home appliances, mobile phones, computers, printer boards, metering systems and others. It can be used to provide a reset signal when the voltage drops below a certain threshold. It is also used to provide a reset signal from the voltage monitor to the voltage detector and to control the reset time setting.

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