LTC4120IUD-4.2#TRPBF

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PMIC - Battery Charger category is mainly used to charge batteries, like nickel-metal hydride (NiMH), lithium-ion (Li-ion), and lithium-polymer (Li-poly). It includes step-down chargers, switching regulators, linear regulators, and battery monitoring systems. In this article, we will take a closer look at the LTC4120IUD-4.2#TRPBF battery charger and its application field and working principle.

The LTC4120IUD-4.2#TRPBF is a high-performance, low quiescent current, and low dropout linear charger for single-cell Li-ion and Li-polymer batteries. Its ultra-low power consumption and battery life leader supports a wide range of applications such as medical devices, wearable healthcare monitoring, smartphones, and other portable consumer electronics. The charger can be used with an input source in the range of 4.35V to 21V and supports charging up to 13.5V and up to 4.8A. It features over-voltage protection, reverse-battery protection, and adjustable voltage limits.

The application field of the LTC4120IUD-4.2#TRPBF mainly includes medical devices, wearable healthcare monitoring, smartphones, and other portable consumer electronics. It is used to charge single cell lithium ion and lithium-polymer batteries with an input source in the range of 4.35V to 21V and can support charging up to 13.5V and up to 4.8A. It is ideal for use in applications with tight space, where the ultra-low power consumption of the LTC4120IUD-4.2#TRPBF and battery life leader ensures a long lasting device.

The working principle of the LTC4120IUD-4.2#TRPBF can be explained as follows. The input voltage from the power source is applied to the voltage regulator, which contains an internal low dropout (LDO) regulator that can output up to 13.5V. When the battery voltage falls below the voltage set on the FB pin, the LDO regulator outputs a voltage of up to 4.8A and a current of up to 4.8A at the charge-current pin. The current output is then used to charge the battery, while the current-sense resistor monitors the current flowing into the battery. When the battery voltage reaches the voltage set on the FB pin, the LDO stops charging, thus protecting the battery and preventing overcharging.

The LTC4120IUD-4.2#TRPBF is an ideal battery charger for use in medical, wearable and other portable consumer electronic devices. Its wide range of input voltage, high current output, and low dropout regulator make it suitable for a variety of portable devices. Furthermore, its over-voltage protection, reverse-battery protection, and adjustable voltage limits allow it to be used safely in various applications. Overall, the LTC4120IUD-4.2#TRPBF is a reliable, efficient and safe battery charger for a range of portable and medical device applications.

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