MP2618EV-LF-P

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MP2618EV-LF-P Application Field and Working Principle

MP2618EV-LF-P is the MIL-STD-883 Class B version of the MT2618 series, which is a low voltage, Li-ion battery charger system with an enhanced feature set. This charger system is designed by Monolithic Power Systems (MPS) for use with one or two Li-ion/polymer cells in series with a minimum of 2.5V. This product is classified as a PMIC (Power Management Integrated Circuit) Battery Charger.

The MP2618EV-LF-P has many potential applications and is an ideal solution for powering small, battery-powered devices including cell phones, bluetooth headsets, portable media players, and cameras. It can also be used in applications that require an uninterrupted supply of power, such as automotive systems, medical devices and more. It is particularly useful in applications that require a high degree of protection from overcharging.

The working principle of the MP2618EV-LF-P is based on the operation of the LDO (Linear Regulator) and the PMU (Battery Protection Unit). The LDO consists of a voltage regulator, oscillator, output impedance amplifier and rectifier, which are combined to regulate and maintain the required voltage. The PMU includes the charge control loop, charge current limit (CCL) loop and the over-temperature protection (OTP) loop. The charge control loop regulates the charge current to the battery. The CCL loop limits the voltage at the output of the charger to ensure safe performance and protect the battery from high current and reverse current problems. The OTP loop monitors the temperature of the battery and cuts off the power when it reaches dangerous levels.

The MP2618EV-LF-P also provides safety functions that protect the charger, battery and end device against abnormal conditions. It can be used with one or two Li-ion cells in series and also detects the cell voltage and temperature simultaneously. Its integrated battery protection circuitry safely disconnects the load circuit if any charge parameter is exceeded. The device also features an adjustable voltage and current, so it can be easily tuned to the specific requirements of the application. Furthermore, it includes an overvoltage protection (OVP) and an integrated heat sink.

In summary, the MP2618EV-LF-P is an easy to use, highly efficient and reliable battery charger with excellent safety features for powering small, battery-powered devices. It is an ideal choice for applications such as medical devices, automotive systems and other battery-powered applications that require uninterrupted power. Its adjustable voltage and current, as well as its integrated protection circuitry, make it an excellent choice for designers that need a reliable and safe way of powering their applications.

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