MAX14748EWW+

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The MAX14748EWW+ from Maxim Integrated is a multi-function battery charger IC designed for space-constrained handheld portable applications. This device offers a robust, flexible solution for charging Li-Ion and Li-Polymer batteries of various capacities that require up to 3.6A of charging current.

The MAX14748EWW+ provides intelligent sensing and charging control for fast and accurate charge times in a variety of system applications. Integrated features like input current limit, thermistor-monitored thermal foldback, an output timer, and adjustable charge current limit help ensure optimal system performance.

The MAX14748EWW+ is well-suited for use in products such as digital still cameras, video cameras, laptop computers, tablets, and portable media players. This device can be used as a stand-alone solution or in combination with a host processor, such as with Maxim\'s integrated on-chip Intelligent Battery Charger (MAX14745).

Application Field

The MAX14748EWW+ can be used to charge Lithium-ion (Li-ion) and Lithium-polymer (Li-polymer) batteries in any size. It is designed for fast and accurate charge times, and features features such as input current limit and adjustable charge current limit to ensure optimal performance in space-constrained hand-held product applications.

Products such as digital still cameras, video cameras, laptop computers, tablets, and portable media players can benefit from the MAX14748EWW+. It can be used as a stand-alone solution or coupled with a host processor, such as Maxim\'s patented Intelligent Battery Charger (MAX14745). It also includes integrated temperature protection, charge status indication, and a dedicated system power control pin.

Working Principle

The MAX14748EWW+ is designed to provide accurate charging of Li-ion and Li-polymer batteries of varying capacities. This device works by monitoring the voltage of the battery, current levels, and temperature to ensure an optimal charging environment. It has a wide input voltage range, which allows it to be used with wall adapters or USB power for charging purposes.

The MAX14748EWW+ features an intelligent pre-charging and charge termination features. The pre-charging feature helps reduce battery stress by allowing the battery to be fully charged with minimal current, while the charge termination feature uses voltage adaptive charge termination to detect when the battery has reached full capacity. This allows for fast and efficient charging of the battery.

The charge current limit feature of the MAX14748EWW+ can also be used to prevent overcharging. This feature limits the maximum charge current, ensuring that the battery\'s charge current is never higher than the desired level. This can help prolong battery life and reduce the risk of damage due to overcharging.

The MAX14748EWW+ also features an adjustable output timer. This timer can be used to set the desired charge time for the battery. This allows for precise control over the charging process, ensuring that the battery is not overcharged or discharged. The timer can be adjusted to a precise number of minutes, and can be set for up to 24 hours.

The MAX14748EWW+ also incorporates a thermistor-monitored thermal foldback feature. This feature helps to protect the device from excessive temperatures and helps maintain a safe charging environment. The thermal foldback feature will automatically reduce the charge current if the temperature of the device exceeds a certain limit.

Conclusion

The MAX14748EWW+ is a smart battery charging IC, designed to provide accurate and fast charging of Li-ion and Li-polymer batteries in space-constrained hand-held applications. This device is well-suited for products such as digital still cameras, video cameras, laptop computers, tablets, and portable media players. It offers integrated features such as input current limit, thermistor-monitored thermal foldback, adjustable charge current limits, and an output timer, helping ensure optimal system performance.

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