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Dongguan Hallsen Technology Co., Ltd
Hall elements are usually used in mobile power supplies to monitor the battery status in real time. When the battery power changes or the temperature exceeds the safe range, the Hall element senses the change in the magnetic field. Through real-time analysis of these data, the system can adjust the charging current in time, provide temperature protection, and ensure the health and safety of the battery.
Recommended model: HS481 full-polarity high-sensitivity Hall device
HS481 is a non-polar Hall switch based on mixed-signal CMOS technology. This IC uses advanced chopper stabilization technology, so it can provide accurate and stable magnetic switch points.
In circuit design, HS481 provides an embedded controlled clock mechanism to provide a clock source for the Hall device and analog signal processing circuit. At the same time, this controlled clock mechanism can send a control signal to make the circuit with large current consumption periodically enter the "sleep" mode;
Also through this mechanism, the chip is periodically "woken up" and detects the strength of the magnetic field passing through the Hall device according to the predetermined magnetic field strength threshold.
If the magnetic flux density is above the "operating point" threshold or below the "release point" threshold, the open-drain output transistor is driven and latched into the corresponding state. During the "sleep" period, the output transistor is locked in its previous state.
In battery-powered applications, this design provides the best support for extended operating life. The output transistor of the HS481 is locked in the on state when there is a strong south or north magnetic field facing the package marking side, and locked in the off state when there is no magnetic field.
