LP3918TL-A/NOPB

In today’s electronic world, PMIC (Power Management IC) is plays a key role as its power supply can provide the stable and accurate current-voltage (I/V) to the system. The LP3918TL-A/NOPB is a part of PMIC which provides the necessary power management needed for battery charging application. This device contains a constant current and constant voltage switched mode charger with very low quiescent current (IQ) for battery in the market.

The LP3918TL-A/NOPB is essentially a battery charge controller integrated circuit with the primary function of controlling the charging and discharging of the battery. The IC has two main power management operations, which are Constant Voltage (CV) and Constant Current (CC) charging. The voltage regulation point of the charger will determine the regulation point of the battery and the current regulation point of the charger will determine the ultimate charging rate of the battery.

The application field of LP3918TL-A/NOPB is mainly in the field of consumer electronics such as portable devices, computers, and mobile phones. The power management type of this device is used commonly for the charge and recharge of Li-ion and Li-polymer battery cells. It is a fully integrated power management IC with high-performance and better working efficiency.

The working principle of the LP3918TL-A/NOPB is quite simple. It is essentially a battery charge controller integrated circuit with the primary function of controlling the charging and discharging of the battery. When an input voltage is connected to V IN, this IC will control the charge current to restrict it and ensure that the battery voltage reach the end of charge voltage. After the battery is fully charged, the input current is reduced to a safe level to maintain the battery voltage at a constant level. When the battery is in the process of charging or discharging, this device will detect the battery voltage and regulate the charge current accordingly.

The LP3918TL-A/NOPB ensures that the charge current is always accurately controlled even under varying conditions. It also prevents any over charging or over discharging of the battery. Moreover, this device has three different charge mode settings, which are slow charge, fast charge and accelerated charge, to meet different charging requirements. The safety features such as thermal shutdown, input voltage monitoring and reverse current protection, ensure safety of the battery.

The LP3918TL-A/NOPB provides a low quiescent current (IQ) of only 200µA, and an extremely low power consumption of <2mW. Its flexibility to handle different battery chemistries and its integrated devices also contribute to its popularity. Overall, the LP3918TL-A/NOPB is a versatile device, with industry standard features and reliable performance. This device is designed to work both efficiently and safely and is suitable for a wide range of battery charging applications.