MAX14920ECB+

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The MAX14920ECB+ is a power management integrated circuit (PMIC) specifically designed for battery management. It integrates analog and digital functions, making it ideal for charging, balancing, and protecting batteries in many different applications such as laptop PCs, tablets, and cellular phones. The MAX14920ECB+ utilizes a low-two-way linear impedance topology and also offers support for both SEPIC and boost applications, offering a single-chip solution and saving system PCB space. An on-chip 8-bit DAC provides external superior accuracy of current and voltage regulation, which can be dynamically adjusted by an I2C interface.

The MAX14920ECB+ can be easily programmed by an I2C interface, making it suitable for a variety of applications, such as automotive, telecommunication, and portable devices. The integrated circuit provides a complete solution for power management and monitoring. The device includes a voltage-measuring A/D converter with programmable acquisition rates, battery-level indication, thermal protection, and under-/over-voltage lockout, providing fast and accurate performance even for high-power applications.

The MAX14920ECB+ has two low-noise voltage- and current-sense inputs for accurate battery monitoring. External components are required to complete the battery-management system, allowing for easy implementation of charging, protecting, and balancing of the battery over the full range of charge rates and temperatures. Additionally, the MAX14920ECB+ is equipped with internal loop compensation to provide factory-calibrated battery-management functionality.

The MAX14920ECB+ is designed to manage up to four Li-Ion/Li-Polymer cells with a separate charge input (IN) and discharge output (OUT) for each cell. The voltage-sense and current-sense inputs monitor the voltage and current of each individual cell. This device also features internal FETs to regulate the charge and discharge functions of each cell separately. The FETs are protected against short circuit and thermal overload, eliminating the need for external fuses. The internal loop compensation allows for reduced external components, allowing for a minimalistic design for higher efficiency.

The device uses a standard I2C interface with a selectable readback address, allowing for a simple, low-power integrated solution for battery-management applications. The MAX14920ECB+ offers a wide array of safety features including thermal protection, cell-imbalance detection, under-/over-voltage protection, and battery-level indication, allowing for reliable performance. The device is capable of working in both boost and SEPIC topologies, allowing for improved power-supply efficiency.

The MAX14920ECB+ offers a flexible, integrated solution for short-circuit protection, battery balancing, current- and voltage-regulation, and charging-application development. The device\'s advanced features make it ideal for high-power applications while at the same time providing efficient power management and monitoring. The battery management capabilities are suitable for a range of applications including automotive, telecommunication, and portable electronics.

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