MAX14578AEETE+

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The MAX14578AEETE+ is a battery charger designed for use in portable devices. It is a Power Management IC (PMIC) optimized for single-cell Li+ batteries. The MAX14578AEETE+ offers a wide input voltage range and can accept input sources up to 20V. The device offers a constant-voltage/constant-current scheme for charging Li+ batteries, minimizing the risk of overcharging and providing rapid charge times. It includes a reduced-power/reduced-current mode to prevent overstress on cells and also allows for trickle-charging of the battery to maintain full charge.

The MAX14578AEETE+ is well-suited for applications with a high-voltage power source, such as in USB-charging mobile phones. It offers a 4-level float-voltage setting, allowing the user to tweak the float voltage based on the specific application needs. In addition, a dynamic float-voltage setting feature allows the user to set the float voltage while the device is in operation. This feature is especially useful for dynamic applications that require varying float voltages based on the state of charge of the battery.

The design of the MAX14578AEETE+ is based on an adaptive constant-voltage/constant-current scheme. This scheme provides fast charge times and charge termination at the optimal battery level. The device also incorporates active droop current monitoring, rising up the battery voltage in steps until the desired float voltage is achieved. In this way, the battery is prevented from overcharging and is kept at a fully charged condition.

The MAX14578AEETE+ offers additional features such as a thermal-foldback feature to reduce peak current when the battery temperature is elevated. The device also includes undervoltage lockout protection and reverse-current protection, which protect against overdischarge and reverse-charge situations, respectively. The device also has a sleep mode, which can be used to reduce overall power consumption when not in use.

In summary, the MAX14578AEETE+ is an ideal solution for applications that require a PMIC-optimized battery-charging solution. The device’s wide input voltage range and comprehensive protection features make it well-suited for use in a variety of portable devices. Its constant-voltage/constant-current scheme enables fast and optimized battery charging, and its thermal-foldback and sleep modes enable further system savings. The MAX14578AEETE+ is a versatile solution for efficient, safe, and reliable battery charging.

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