BU1840AMUV-E2 Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are a type of integrated circuits used for managing power requirements for various kinds of electronics. One type of PMIC is Battery Chargers, which provide power to rechargeable batteries. The BU1840AMUV-E2 is a battery charger made by ROHM Semiconductor that is specifically designed for lithium-ion batteries. This PMIC provides a robust and reliable charging system that is suited for many applications, and can be used to quickly and safely recharge batteries.

Applications

The BU1840AMUV-E2 is mainly used in portable electronics such as smartphones, laptops, and other portable devices. It can also be used in industrial applications such as robotic systems and unmanned aerial vehicles. Its compact size and low profile make it a great option for embedded systems where space is limited. Its wide range of operating temperature allows it to be used in a variety of applications.

Working Principle

The BU1840AMUV-E2 features a wide input voltage range of 3.2V to 20V, and a constant 4.2V output voltage suitable for charging lithium-ion batteries. The maximum charging current is adjustable from 150mA to 1500mA, and the charger can automatically detect the battery type and adjust the charge current accordingly. The charger also features built-in temperature protection, over-current protection, and short-circuit protection for added safety and stability.

The BU1840AMUV-E2 includes a Power Path Management (PPM) circuit which ensures that the power consumption is minimized during each phase of the charging process. The PPM circuit makes sure the battery is charged as fast as possible without causing damage to the battery. The device also features Low Voltage Diffusion (LVD) to protect battery cells from over-discharge, and Over Voltage Protection (OVP) to guarantee the safety of the device in high-voltage environments. The BU1840AMUV-E2 can be used with a wide variety of battery chemistries, including Lithium-Ion (Li-Ion), Nickel Metal Hydride (NiMH), and Nickel Cadmium (NiCd).

Conclusion

The BU1840AMUV-E2 is a versatile and capable battery charger designed for many applications. Its wide input voltage and adjustable current output, combined with built-in safety and protection features, make it ideal for use in embedded systems, industrial applications, and consumer electronics. Its Power Path Management (PPM) system ensures maximum efficiency and reliability during the charging process, making it a great option for anyone looking for a reliable and efficient battery charger.

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