LM3647IM

PMIC - Battery Chargers keep our phones and other devices charged, and the LM3647IM is one of the most advanced charging solutions available. It is one of the first ICs to support multiple topologies, including buck- and boost-charging, and is able to charge two devices simultaneously. In this article, we\'ll explore the different applications of the LM3647IM, as well as its working principle.

Applications

The LM3647IM is designed for powering handheld devices that rely on USB Type-C connections, such as laptop computers and phones. It is capable of charging at up to 4A and is able to support both fast and slow charging. It is also able to charge Qi-compatible wireless devices, as well as USB Type-A and USB Type-B devices, making it a great choice for those looking for maximum flexibility. Additionally, the IC utilizes N-channel MOSFETs to reduce heat and increase energy efficiency.

The LM3647IM is an ideal solution for those needing to charge multiple devices. Its supported topologies make it possible to charge devices of different capacities simultaneously, while its programmable power path allows users to prioritize their charging needs. The IC also features an integrated bypass and reverse current blocking, making it suitable for applications in harsh environments. Finally, the IC has a wide operating range of 4.2V to 6.0V.

Working Principle

The LM3647IM is a powerful charging IC with multiple topologies, including buck- and boost-charging. In buck mode, the IC reduces the input voltage to the desired output voltage. In boost mode, the IC increases the input voltage to the desired output voltage. It is also capable of charging two devices simultaneously. The IC utilizes an adjustable power path to provide flexibility in charging multiple devices.

The IC also features an integrated bypass, which provides a higher efficiency when using a single battery cell, and reverse current blocking to prevent current from flowing back into the input source. The IC has multiple levels of protection, including undervoltage lockout, current limit, and temperature protection. Additionally, the IC features two analog inputs, EN/UV and OT, which allow the user to set the device’s charging parameters.

The IC also features a programmable power path that helps optimize charging efficiency. The power path can be programmed to prioritize the charging of one device over another, allowing users to ensure their device gets the most power when needed. Additionally, the IC features integrated digital soft-start, which helps to reduce noise and minimize ripple at the output.

Conclusion

The LM3647IM is one of the most advanced charging solutions available. Its support for multiple topologies and wide operating range make it suitable for a variety of applications and environments. Its integrated bypass and reverse current blocking make it suitable for applications in harsh environments. The sophisticated power path further allows users to prioritize their charging needs. The IC is an ideal solution for those needing to charge multiple devices.