MAX6430EHUS+T

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Power management integrated circuit (PMIC) is essential in many electronics products. For portable products powered by battery, there is an additional need to monitor and regulate the charge/discharge cycle of the battery, which is usually handled by the battery management integrated circuit (BMIC). The MAX6430EHUS+T is an example of a battery management integrated circuit designed for use in portable electronic devices such as mobile phones, digital cameras and PDAs.

The MAX6430EHUS+T is based on a single-cell Li-Ion/Li-Polymer battery protection IC that implements a high-side MOSFET to perform monitoring of battery charging and discharging. It also includes a voltage monitor circuit to detect the battery voltage, and a cell balancer circuit to equalize the charge level across multiple cells. The MAX6430EHUS+T also includes a temperature monitor circuit to detect the temperature of the system.

The MAX6430EHUS+T provides versatile overcharge, overdischarge, and over temperature protection for system operation. The over charge level is set by threshold voltage that can be selected manually, and the upper overcharge voltage is monitored using an internal comparator. If the battery voltage exceeds the preset threshold voltage, an internal MOSFET is turned off to prevent further charging. The over discharge level is also monitored using an internal comparator. If the battery voltage drops below the preset threshold, an internal MOSFET is turned off to prevent further discharging. The over temperature protection can be enabled by setting the temperature sensing threshold level.

The MAX6430EHUS+T also provides a host of other features such as automatic cell balancing, programmable charge current regulation, and a low-resistance package. The cell balancing circuit ensures that all cells in a multi-cell application are balanced even when the battery is not in use or in deep discharge. The charge current regulation function helps ensure that the battery receives the correct amount of charge current for the application. The low-resistance package helps reduce power dissipation, thus enhancing system reliability.

In summary, the MAX6430EHUS+T is an efficient battery protection IC designed for use in portable electronic products. Its many features provide overcharge, overdischarge, and over temperature protection, as well as automatic cell balancing and programmable charge current regulation. Its low-resistance package further helps minimize power dissipation and enhance system reliability.

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