ISL9237HRZ

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The ISL9237HRZ is an advanced system protector and power manager integrated circuit that provides a wide range of functions for various system-level protection, power management, and control. It is a low power, self-powered 3.2A peak-current Li-ion battery charger capable of providing Li-ion charging current up to 2A. It is also a high-accuracy voltage supervisor with an underrated reset threshold of 1.125V and an overrated reset threshold of 4.98V. It supports input voltage range of 3.1V-20V and an eight-stage regulated output voltage up to 3.2A peak. The chip is designed to extend the lifetime of Li-ion batteries and reduce the charging time to a minimum.

The ISL9237HRZ is a single-chip power management device ideal managing the charging of Li-ion batteries in portable devices. It is designed to extend the life of Li-ion batteries through advanced control and protection functions. The chip features an integrated current sense amplifier, schottky diode, and protection circuitry to protect from overvoltage and short circuit conditions. It also includes monitoring and control functions for temperature and timer-based charging stages. The chip also includes gas gauge features for monitoring battery charge level and providing end-of-charge indication.

The ISL9237HRZ is well suited for applications such as mobile phones, tablet PCs, netbooks, portable gaming devices and other portable electronic devices. The single-chip solution provides a complete charging and protection solution in a very small package size, offering improved power efficiency and reduced charging times. Its compact size also enables integration with battery packs allowing the device to be mounted directly to the battery pack.

The ISL9237HRZ is a self-powered device that utilizes a two-fold approach to regulate the charging process. The power management and control block includes pre-regulation, voltage regulation and current regulation. Pre-regulation helps protect the device from overvoltage conditions, ensuring that the output voltage is within the specified range. Voltage regulation provides constant output voltage regardless of the input voltage. Current regulation enables precise control of charge current based on the input voltage and output voltage. Finally, the battery protection and control circuit helps protect the battery from overvoltage and overcurrent conditions, as well as temperature and timer-based charging conditions.

The ISL9237HRZ integrates a wide range of protection functions, such as overvoltage protection, overcurrent protection, temperature protection, and timer-based charging. It also contains built-in safety features, such as voltage and current monitoring, overcurrent protection, and reverse current protection. Together, these functions help to ensure that the Li-ion battery is protected from overcharging, overdischarge and other dangerous conditions. The chip also provides end-of-charge indication to alert the user when the battery is fully charged.

The ISL9237HRZ is an advanced Li-ion charging and protection IC ideal for battery management and protection applications. It features a large operating voltage range, small package size, and a complete protection and monitoring feature set. The chip is well suited for various portable electronic devices, such as mobile phones, tablets, netbooks, portable gaming devices, and other battery-powered portable devices. Thanks to its integrated features, the ISL9237HRZ offers highly efficient charging performance, improved power efficiency, and improved safety compared to other solutions.

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