LT3651IUHE-8.4#TRPBF

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The LT3651IUHE-8.4#TRPBF device is a synchronous buck battery charger designed for low noise and high power efficiency applications. The IC combines both a high-efficiency buck regulator and a battery charger in one integrated device, providing an optimized solution for fast charging of Li-ion, Ni-MH and Ni-Cd batteries. It incorporates an onboard power MOSFET, input current limit and charge current control to provide a complete power management solution.

The key features of the LT3651IUHE-8.4#TRPBF device include an intelligent power MOSFET control with an input overvoltage protection, a high efficiency buck regulator, an AccupowerTM power stage, a high current buck regulator, a low voltage output buck regulator, a low RDS(ON) switching regulator, a programmable charge current, and a thermal regulation circuit for heat dissipation. The LT3651IUHE-8.4#TRPBF is a synchronous buck battery charger designed to be used with Li-ion, Ni-MH and Ni-Cd batteries. It offers a complete power management solution, with an onboard charge current limit and a programmable output voltage.

The LT3651IUHE-8.4#TRPBF device can operate over a wide input voltage range from 4.5V to 27V and a wide output voltage range from 1.2V to 20V. The charge current is adjustable from 0mA to 3.2A, and the maximum power dissipation is up to 26.4W. The device achieves a high power efficiency up to 95%, and it supports a wide range of current distribution to support multi-cell applications. The device also supports a wide temperature range from -40°C to +85°C.

The LT3651IUHE-8.4#TRPBF device is designed for use in various applications, such as wearable or portable devices, consumer electronics, 3C products, and other industrial and consumer applications. Its thermal regulation circuit with over temperature protection ensures safe operation, while its low standby power consumption ensures a longer battery life. Its high efficiency and low noise design make it ideal for low power applications.

The working principle of the LT3651IUHE-8.4#TRPBF device is based on the buck converter topology. It uses a high-efficiency, low-noise, synchronous buck converter with high-current output and low-voltage output. The power switch is protected by an input overvoltage protection circuit, and the output is protected by a dynamic current limit circuit. The charger is operated by controlling the average current, and the output voltage is set by an internal voltage reference. The device is programmed by an external resistor, allowing for flexible current output and charge termination voltage settings.

In conclusion, the LT3651IUHE-8.4#TRPBF device is an optimized solution for fast charging of Li-ion, Ni-MH and Ni-Cd batteries. It provides high power efficiency, low noise operation, and wide temperature range operation. The device is ideal for use in various applications, including wearable or portable devices, consumer electronics, 3C products, and other industrial and consumer applications.

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