BD46281G-TR Integrated Circuits (ICs)

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The BD46281G-TR is a type of PMIC (Power Management Integrated Circuit) in the supervisors subcategory. It is designed for applications such as notebook computers, consumer electronics, and other digital equipment. The product is specifically designed for battery-backed systems.

The main purpose of the BD46281G-TR is to monitor a live AC/DC power supply for microprocessors. It can detect and support several power supply conditions such as over-current, over-voltage, under-voltage, reverse polarity, and low battery. The monitored power supply is typically located on a system motherboard or unit panel.

The BD46281G-TR has several features that make it appropriate for the applications mentioned above. Firstly, the integrated circuit is highly-sophisticated, allowing it to accurately detect various power supply parameters such as voltage and current as well as temperature and frequency. The device is also extremely low-power: it consumes no more than 15μA and is capable of running on very low power such as only 3V.

In terms of its working principle, the BD46281G-TR utilizes an on-chip analog-to-digital converter (ADC) for the live power supply monitoring. The circuit has an on-chip voltage scaling circuit to ensure the accuracy of the ADC over the entire power supply range. In addition, the ADC\'s resolution is ±1%.

The circuit has an on-chip over-current protector which enables it to detect and respond to over-current conditions faster than is possible with traditional over-current protection methods. It also has a low-threshold voltage detector for detecting under-voltage conditions. This provides an efficient way for the circuit to react to low threshold voltages quickly.

The integrated circuit can also be configured to provide over-voltage protection. This feature is enabled by a warning threshold setting and feature which will shut the power supply off once the voltage reaches a preset level.

The BD46281G-TR also features a reverse-polarity protection circuit. This is enabled by a directional signal which is generated when the reverse polarities exist on the power pins. This signal is used to initiate a safe shutdown of the power supply.

Finally, the BD46281G-TR has a low-battery monitoring circuit which allows the circuit to detect when the battery voltage is too low. The circuit will then initiate a shutdown until the battery is replaced or replenished.

In conclusion, the BD46281G-TR is a highly capable PMIC for battery-backed system applications. It has sophisticated power monitoring capabilities along with robust protection features such as voltage and current protection, reverse polarity protection, and low-battery monitoring. These features enable the BD46281G-TR to accurately monitor and protect system power supply in situations such as over-voltage, under-voltage, and reverse polarity.

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