LM3658SDX-B

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The LM3658SDX-B device is a Battery Charger specifically designed to minimize the complexity of simple DC-DC Charging designs. It is based on a highly integrated power switch, voltage regulator and global energy manager. This battery charger is suitable for use in mobile applications, industrial applications and automotive applications based on Li-Ion battery technology. The device provides up to 4A of current handling capacity and up to 4.2V of charging voltage.

The LM3658SDX-B device includes integrated MOSFETs, input overvoltage protection, programmable adaptive control, maximum power point tracking, as well as a variety of protection features. In addition, the device is RoHS compliant and optimized for high efficiency.

Application Field

The LM3658SDX-B Battery Charger can be used in a variety of applications, including:

• Smartphone battery charging,
• Tablet battery charging,
• Notebook computer battery charging,
• Digital camera battery charging,
• Wearable device battery charging.

In addition to the above, the LM3658SDX-B Battery Charger can also be used in industrial and automotive applications. It is ideal for applications where maximum power point tracking, low cost and high efficiency are key performance requirements.

Working Principle

The working principle of the LM3658SDX-B Battery Charger is based on the constant-voltage charging regime. It operates in an open-loop control regime where the charging current is controlled by the output voltage of the battery. The output voltage is maintained within a range of 2.8V to 4.2V and the charging current will gradually decrease as the battery reaches full charge and the output voltage begins to drop. In addition, the LM3658SDX-B Battery Charger includes a maximum power point tracking feature that ensures maximum power is delivered to the battery during charging. This allows the charger to deliver higher charging rates while maintaining maximum energy efficiency.

The LM3658SDX-B Battery Charger also includes a variety of features to ensure safety and reliability during charging. These include over-voltage protection, input overvoltage protection, thermal protection, short-circuit protection and reverse current protection. In addition, the device includes a programmable adaptive control circuit that enables it to dynamically adjust its output current to ensure maximum efficiency.

Conclusion

The LM3658SDX-B Battery Charger is a highly integrated power switch and voltage regulator designed for Li-ion battery charging applications. It features up to 4A of current handling capacity, 4.2V of charging voltage, integrated MOSFETs, input overvoltage protection, programmable adaptive control, as well as a variety of safety and protection features. In addition, the device includes maximum power point tracking, enabling it to deliver higher charging rates while maintaining maximum energy efficiency. It is suitable for use in mobile applications, industrial applications, and automotive applications.

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