MP2604DQ-LF-Z

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Power Management Integrated Circuits (PMICs) are specialized chipsets designed to manage the power supply and distribution of electrical systems. Battery Chargers are a type of PMIC that control the charging and discharging of Li-ion and Li-polymer battery packs. The MP2604DQ-LF-Z is a Li-ion/Li-polymer battery charger IC that is commonly used in consumer electronics and is manufactured by Monolithic Power Systems (MPS). It is a cost-effective solution that is optimized for space-constrained applications, such as cellular phones, PDAs, cameras, and other portable electronics products.

The MP2604DQ-LF-Z consists of a synchronous buck regulator and a linear charger. The buck regulator uses a switch FET for conversion and is capable of delivering up to 2A of output current. The linear charger is capable of delivering up to 1A of output current. The two charging circuits are controlled by independent voltage monitoring and temperature monitoring circuitry. The device also includes an adjustable input current limit and a Thermal Shutdown feature to protect against excessive current and temperature conditions.

The working principle of the MP2604DQ-LF-Z battery charger is based on the principle of non-isolation charging. This means that the charger converts the input voltage into a controllable output voltage by using a power switch and a synchronous rectifier. The voltage is step-down or bucked from the input level and regulated to the necessary voltage for charging. The charging current is regulated by controlling the duty cycle of the power switch, or the on-time of the switch FET. The system is designed to maintain the current limited based on the predefined value and prevents the battery from overcharging. In addition, the charger is able to sense the end of charge conditions and switch off the main charging path to prevent battery damage.

The MP2604DQ-LF-Z is an optimal solution for designers that are looking for an ultra low-cost, and high-current battery charging option in space-constrained applications. Its non-isolated topology allows for a wide input voltage range and its adjustable current limit makes it suitable for a variety of battery charging applications. In addition, its high-side FETs enable high efficiency, low quiescent current, and low EMI. It is also able to support higher input voltages, allowing for faster charging than other comparable solutions. All these features make the MP2604DQ-LF-Z an ideal solution for many different types of battery charging applications.

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