LM3420M5-16.8/NOPB

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PMIC, or Power Management ICs, plays a very important role in our modern day electronics. These integrated circuits allow us to efficiently manage power throughout our systems, from the input power supply to the output power loads. One such device is the LM3420M5-16.8/NOPB, a power management IC designed for battery charging applications. This article will discuss its application field and working principle.

The LM3420M5-16.8/NOPB is a high-efficiency, low-dropout battery charger designed for lithium-ion, lithium-polymer and other rechargeable battery types. It uses less external components than traditional chargers, making it a cost-effective solution for applications with space and cost constraints. Furthermore, the IC provides an adjustable cell capacity and termination current limit, making it flexible enough to fit a variety of battery capacity configurations. The device is optimized for low power dissipation, allowing it to operate in a low quiescent current mode while providing low heat dissipation.

The LM3420M5-16.8/NOPB is capable of charging batteries at both constant voltage and constant current mode. The battery can be charged at up to 4A with a fully integrated charge control circuitry. The IC has a built-in safety timer and thermal protection to ensure safety of the battery during charging. The IC also supports a variety of charge termination methods such as pre-charge, trickle-down and final checks before terminating the charge.

The IC has been designed for use in a wide variety of applications, including battery powered portable electronics, consumer electronics, and automotive systems. The LM3420M5-16.8/NOPB is suitable for use in both stand-alone applications as well as in systems with other power management ICs. The device is available in a thermally enhanced, 24-pin TSSOP package, making it suitable for use in systems with a limited space.

The LM3420M5-16.8/NOPB operates by first detecting the presence of a battery, and then activating its internal circuitry to charge the battery. The IC will then output a charging current that is proportional to the battery\'s remaining capacity. This current is monitored and adjusted by the internal circuitry to ensure that the battery is safely charged. It is possible to adjust the current limit and termination voltage, allowing the IC to be customized for different types of batteries. The IC also monitors the battery temperature to prevent the battery from overheating during charging.

Once the battery has been fully charged, the IC will switch off the charge, indicating that the battery is ready to be used. The device offers a wide range of features, such as support for different voltage configurations, charge current limit and termination methods, and over-temperature protection. This makes it a very versatile and cost-effective solution for battery charging applications.

In conclusion, the LM3420M5-16.8/NOPB is a highly efficient power management IC tailored for battery charging applications. It offers a wide range of adjustable parameters to suit different types of rechargeable batteries and provides several safety measures to ensure safe charging. The device is suitable for use in a wide range of applications, from consumer electronics to automotive systems, making it an ideal choice for battery powered systems.

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