MAX77818EWZ+

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The MAX77818EWZ+ is an advanced Battery Charger System Management Unit, or BCSMU in acronym, from Maxim Integrated that works as a direct-charger replacement to replace the traditional linear battery charger. With this innovative BCSMU, it can facilitate many functions that go beyond scope of charge control, including over-voltage protection, short-circuit current limitation, thermal protection and 4.3V fast-charge mode. It also packs additional features such as Charge current and Charge voltage adjustment, Charge current and Charge voltage protection, system thermal protection and input capability up to 30V.

The MAX77818EWZ+ integrates a programmable step-down DC-DC converter, a switch-mode PWM charger with a high-voltage boost converter, a power-on reset (POR) generator, and a system power management control. This provides versatile charging options that can be tailored to the specific battery type and application, while also helping to minimize solution size and cost. The integrated power management control also reduces current consumption and has power-saving features such as low-power mode and adjustable power consumption.

The MAX77818EWZ+ provides total charge current up to 1.25A and adjustable charge voltage up to 4.2V. The device also features an accurate internal temperature compensation circuit that helps to maintain a safe and reliable charge rate for various battery types. The built-in Reverse Current Protection feature helps ensure that the battery does not discharge in case of reverse polarity connection. The MAX77818EWZ+ operation mode can be controlled through external I2C interface.

The MAX77818EWZ+ provides single battery charging for various lithium ion battery chemistries including Li-ion, Li-polymer, and LiFePO4. It offers a variety of charging methods such as Constant Current/Constant Voltage (CC/CV), Constant Voltage Regulation (CVR), and Adaptive Voltage Regulation (AVR). It also supports pre-charging and trickle charging to optimize the charging process. The built-in battery gauge protects the battery from overcharge, overdischarge, and overcurrent conditions.

The MAX77818EWZ+ is an ideal battery charger solution for applications such as power tools, digital cameras, portable devices, and other mobile products. It can be used to support both small and large battery packs, making it an excellent choice for any system design requiring wide input-voltage range and reliable charging.

The MAX77818EWZ+ is a highly efficient, cost-effective solution for battery charging. With its integrated components, advanced charging techniques, and wide input voltage range, it provides the ultimate choice for power management design needs. It provides various protection features for the battery and helps extend the life of rechargeable batteries. With the advanced features and low-power mode, this BCSMU system helps to lower overall system cost and energy consumption.

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