BQ2002FSNTR

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PMIC, or power management integrated circuits, are increasingly popular components in today\'s electronic products.

The BQ2002FSNTR is a powerful linear charging integrated circuit, which is widely used in consumer electronic products, mobile phones, digital cameras, Bluetooth headsets, etc. It is designed for battery charging, fault detection, time control, fast charge, and protection for rechargeable battery packs.

The BQ2002FSNTR charges two lithium ion or LiPo cells in series without any external circuit components by using a voltage-mode charge control system. It has a low quiescent current of only 2 μA> The BQ2002FSNTR is capable of fast charge with a charge current up to 1.5A while it also has a low power consumption mode to extend the battery life. In addition, the BQ2002FSNTR can be configured for different charge termination voltage, charge current, time control and multiple auto-restart operations.

In terms of working principle, the BQ2002FSNTR works by controlling the output voltage of the charging power source by modulating the voltage source during charge termination. This is done in two steps. First, the BQ2002FSNTR reduces the charging current when the battery reaches the endpoint voltage set by the designer. Secondly, the control logic circuit complements the voltage control circuit and further reduces the charging current when the battery reaches the minimum voltage.

The BQ2002FSNTR provides a number of protection functions, including overcharge and over-discharge protection, current limit protection, charge time monitoring, and thermal shutdown. It also supports a low voltage standby mode for the cells, when the battery is near empty. This prevents them from over-discharging, which can lead to potential hazards such as cell damage and excess heat.

The BQ2002FSNTR is an ideal option for battery charging applications due to its integrated protection features, low quiescent current, and low power consumption. In addition, its adjustable charge termination voltage and charge current make it suitable for a wide range of applications.

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