MAX8934CETI+T

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MAX8934CETI+T is a versatile, synchronous step-down power module from Maxim Integrated. It is designed for quick and easy implementation in battery charging applications. This highly integrated device packs a slew of features, including a battery charger, pre-charge control and two step-down regulators. It also features integrated high-side current sensing and PowerPath control, making it ideal for applications that require sequential charging.

The MAX8934CETI+T integrates a high voltage, high switching frequency synchronous charging controller with a battery emulation mode, a High-Side power FET, and a low-side current sensing FET. It also includes two synchronous, high efficiency, low-drop-out regulators, OCP and OVP protection for the battery supply, and short-circuit protection for both outputs. A enable terminal is also provided for remote enable control.

The MAX8934CETI+T is designed for use in a wide variety of battery charging applications such as mobile phones, MP3 players, digital cameras, and other portable devices. It is well suited for charging single-cell, two-cell, and three-cell Li-Ion and Li-polymer batteries. It is also suitable for charging 3.2V to 4.5V NiMH/NiCd batteries.

The MAX8934CETI+T is designed to offer a high degree of flexibility when used in battery charging applications. Its features a wide input voltage range of 3V to 6V and can be used in multi-cell applications. The battery charger can be configured to provide either constant-voltage or constant-current charging, with selectable charging current ranging up to 2A. The device can also be configured to provide variable voltage, allowing the user to customize the charging profile for different battery types. Additionally, the two step-down regulators can be configured to provide different output voltages and power loads.

The working principle of the MAX8934CETI+T is based on the principle of switching-mode control. The device steps down an input voltage to the regulated output voltage through a series of switches, which alternately turn on and off in a very fast and controlled manner. The result is very efficient, with minimal losses and noise. The two step-down regulators provide synchronous operation, further improving efficiency and reducing noise. Additionally, the current sensing FET allows for accurate current monitoring and protection against over-current and over-voltage conditions.

The MAX8934CETI+T is an ideal choice for designers looking to quickly and easily implement a power management and battery charging solution into their applications. The vast array of features and functions make it easily integrated into almost any system, while providing a high degree of accuracy and protection. Whether one is designing for a single-cell, two-cell, or three-cell Li-Ion/Li-Polymer battery charger, this device is sure to meet the requirements. With its integrated high-side current sensing and PowerPath control, the MAX8934CETI+T is a reliable, flexible, and comprehensive power management solution.

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