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PMIC – Battery Chargers

The MAX8934GETI+T is a high-performance, highly efficient, constant-voltage/constant-current, stepdown lithium-ion/lithium-battery charger. It features a wide input voltage range of 4.3V to 20V and provides output voltages between 2.5V and 5.5V. The output current can be set as high as 1.5A depending on power dissipation. Its integrated safety features include: an adjustable input current limit, an adjustable charging current, charge termination and output current regulation, cell temperature monitoring with software adjustable peak current and average current cutoff, an over-temperature protection, and a reverse- current protection.

Application Field

The MAX8934GETI+T is ideal for use in a wide range of applications such as smartphones, tablets, portable media players, and other handheld devices that require a reliable charging source. It\'s also suitable for embedded systems, where the demand for low noise, power management, and efficiency are critical. It can be used in automotive and industrial batteries, mobile robots, and other industrial applications requiring a wide input voltage range and adjustable power output.

Working Principle

The MAX8934GETI+T features several advanced power management features and integrated protection circuits, providing a safe and efficient charging solution. When an input voltage is applied, the device automatically switches over to the constant-voltage/constant-current mode and starts charging the battery. The internal system monitors the battery voltage and current and then shuts down when the charge is complete. In addition, it features an adjustable current limit to set the maximum charge current, allowing the battery to charge without exceeding the current capacity. The device also includes a temperature monitor and an over-temperature protection circuit to protect the battery from overheating due to overcharging. The MAX8934GETI+T is a highly efficient charger with a wide input voltage range, making it ideal for use in a variety of battery charging applications.

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