MAX16920BATJ/V+

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MAX16920BATJ/V+ is a high-side battery monitor IC designed to monitor the voltage of lead-acid and Li-ion battery cells and provide real-time voltage information over a line measurement. This device operates over a wide input voltage range of 1.7V to 15V and offers a low-current draw during operation. The MAX16920BATJ/V+ is a low-noise, accurate, and integrated solution to measure the voltage of a variety of batteries. This device offers a low-voltage detection accuracy of ±10 mV, and a low-voltage fault accuracy of ±200 mV. It also provides an integrated filter for noise immunity at a wide frequency range.

The device is a low-power application-field item of linear + switching PMIC (Power Management IC) - Voltage Regulators. It is designed specifically for battery monitoring applications and manufacturers can easily optimize the architecture to customize the many advantages of low-voltage detection and fault accuracy. This device integrates several key components such as a Shunt Regulator, voltage reference, comparators, and a low-offset voltage feedback amplifier. The primary application for this device includes battery-operated portable applications such as cell phones, portable computers, and digital cameras.

In terms of functionality, the device can be used to monitor the voltage of a lead-acid or Li-ion battery cell with optimally low power. It contains a voltage reference, comparators and an amplifier to accurately determine the battery voltage. It also contains several integrated filters to reduce the noise levels of the voltage measurement. The device also has temperature compensation inputs to adjust the device operating temperature range.

In terms of working principle, the device works on the principle of measuring the voltage drop across a Shunt Regulator. The voltage reference provides a reference voltage which is compared with that of the battery cell. The comparators then provide a signal which corresponds to the difference in these voltages. This signal is then amplified by an operational amplifier. The output voltage is then calculated by taking into account the amplified signal, as well as the integrated noise-filtering circuitry. This output voltage is then used to determine the real-time state of the battery cell.

MAX16920BATJ/V+ is an integrated solution to monitor the voltage of lead-acid and Li-ion battery cells. This device is an example of the application-field items of PMIC (Power Management IC) - Voltage Regulators. It operates with a low-voltage detection accuracy of ±10 mV and a low-voltage fault accuracy of ±200 mV. It is also a low-noise, accurate and integrated solution easy to customize for battery monitoring applications. It works on the principle of measuring the drop in voltage across a Shunt Regulator. This device is specifically for use in battery-operated portable applications such as cell phones, portable computers and digital cameras.

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