LT3651IUHE-8.2#TRPBF

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The LT3651IUHE is a popular power management integrated circuit (PMIC) that was specifically designed for battery charging applications. It contains an integrated 8.2 A switch-mode battery charge controller and a secondary-side field-effect transistor (FET) driver. The PMIC is specifically designed to minimize component count, minimize board space and reduce system cost. The device has been optimized to provide high level of integration, flexibility and efficiency for battery charging applications.

The LT3651IUHE is designed to facilitate the charging of single-cell Lithium-Ion (Li-Ion) and multi-cell Lithium Iron-Phosphate batteries (LiFePO4) in a variety of portable communications and consumer products. Depending on the application, the battery can be charged with a simple, two-phase constant current/constant voltage (CC/CV) algorithm or with a more complex multi-phase sequential algorithm. The LT3651IUHE also features adjustable input current limitation, adjustable float voltage and adjustable input voltage regulation. It can operate from a wide range of input sources, including USB, AC/DC adapter, wall charger and solar panel.

The LT3651IUHE works by utilizing a switch-mode charge control technique that optimizes the control of the current flowing into the battery. In this way it can maintain a constant voltage across the battery during charging and minimize charge time. The integrated 8.2A switch-mode battery charge controller is designed to reduce EMI and capacitive noise, and minimize losses in the switching circuit. By integrating primary-side voltage regulation, current regulation, integrated power FETs and driver circuitry, the LT3651IUHE is able to maintain a very efficient charge cycle and minimize power dissipation. It also has full cycle-by-cycle current sensing and voltage throttling techniques to prevent overcurrent and overvoltage conditions, ensuring a safe and reliable battery charge process.

The LT3651IUHE is a highly efficient and comprehensive solution for battery charging applications that can provide very good performance with minimal system cost. It is well-suited for a wide variety of applications such as mobile phones and other handheld devices, digital cameras, MP3 players, and automotive and medical products. This PMIC can also be used for a variety of alternative energy sources such as solar and wind power applications.

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