MAX77650CEWV+T

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The MAX77650CEWV+T, which stands for Compact Low Voltage-Threshold Buck-Boost DC-DC Regulator, is a battery charging solution integrated within a system-on-chip (SoC). It consists of multiple integrated components, including a buck, boost, and battery charger, making it an ideal solution for low-power applications that require a battery-powered device. The integrated buck-boost is designed to operate from a battery or other sources of direct current (DC) power. Additionally, it is designed to support a wide range of configurations and provides protection against over-voltage, over-current, and short circuit conditions.

Applications

The MAX77650CEWV+T is suitable for a wide range of applications, from portable medical devices to automotive monitor systems. It offers high integration of a buck, boost, and battery charger in one compact device. It is ideal for applications with low power needs and also includes protection against over-voltage, over-current, and short circuit conditions. This low power solution is also ideal for battery powered applications requiring a backup power source. Additionally, it can support charging of 3-cell Li-Ion or Li-Polymer batteries, and can handle up to 10 Watts of peak power.

Working Principle

The MAX77650CEWV+T utilizes a buck, boost and battery charging controller to provide a complete battery charging solution. The buck is capable of generating an output voltage of up to 28V from an input voltage of up to 20V. The boost is capable of generating an output voltage of up to 28V from an input voltage of 3V. The buck and boost feature pulse width modulation (PWM) to maintain an output voltage and current accuracy of 1%.

In addition to buck and boost, the MAX77650CEWV+T includes a battery charging controller. The battery charging controller is capable of providing up to 10 Watts of peak power and supports 3 cell Li-Ion or Li-Polymer rechargeable batteries. The charging current is adjustable to a maximum of 2 amps and the output voltage is adjustable from 2.7V to 4.2V. The charger also features charge termination, over temperature protection, and current limiting.

The MAX77650CEWV+T also features a power-on reset circuit which prevents unwanted output voltage during startup. In addition, the chip also allows for power-up sequencing and synchronization of multiple voltages. This allows for the safe power up of components before activating the rest of the system.

Conclusion

The MAX77650CEWV+T offers a comprehensive solution for battery-powered applications. It efficiently combines the buck, boost, and battery charging controller in a low power solution. Additionally, it provides protection against over-voltage, over-current, and short circuit conditions, making it ideal for applications that require a reliable power supply. Furthermore, it is capable of supporting a variety of configurations, and supports 3-cell Li-Ion or Li-Polymer batteries. This makes it a great choice for portable and automotive applications.

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