LTC4100EG#TRPBF

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PMIC - Battery Chargers

The LTC4100EG#TRPBF is a Power Management Integrated Circuit (PMIC) specifically designed for battery charging applications. It is versatile and efficient, making it ideal for applications where flexibility, power efficiency and small size are key factors. It combines accurate battery charging, monitoring and protection functions into a single device, and is designed to maximize the life of single-cell Li-Ion/Li-Ion batteries.

Application Field

The LTC4100EG#TRPBF has many potential applications. It can be used in automotive, consumer, industrial and healthcare applications. Additionally, it can be used for battery charging in portable consumer electronic devices such as tablets, phones, notebooks and laptops. It is also suitable for renewable energy systems such as autonomous solar systems since it has low power consumption and offers maximum flexibility in the implementation of its features.

Features

The LTC4100EG#TRPBF’s main features include its highly efficient charge-regulating architecture and its ability to accurately manage power between the main power source and the rechargeable battery. It incorporates a rechargeable battery charger with associated charge control, an integrated Coulomb counter, and provides a power path between the power source and the battery. It also offers many features like automatic poweroff, digital state indication, adjustable soft-start and adjustable inhibit delay.

Battery Modes and Battery Parameter Setting

The LTC4100EG#TRPBF supports different battery charging modes such as constant current/constant voltage charging, trickle charging and manual charging mode. The battery\'s capacity, voltage range and USB input voltage can also be configured for different charging needs. Additionally, it offers an advanced feature called \'Pre-Charge\', that allows for a short pre-charge phase which aids the battery\'s internal charge-balancing mechanism and protects against over-current.

Protection Features

The LTC4100EG#TRPBF incorporates a wide range of protection features. It includes adjustable over-voltage, over-current, under-voltage, and over-temperature protection. In addition, it provides accurate battery temperature monitoring and supports internal/external temperature control and over-discharge protection.

Working Principle

The main duty of the LTC4100EG#TRPBF is to manage the transfer of energy from a power source to the battery. It includes a buck-boost regulator that ensures that the energy is transferred efficiently. When the input voltage is greater than the output voltage, the buck-boost regulator works in buck mode. When the input voltage is lower than the output voltage, the buck-boost regulator works in boost mode. In either case, the buck-boost regulator maintains a constant output voltage level, which is required for optimal battery charging.

The LTC4100EG#TRPBF also includes a Charge State Machine (CSM) which helps ensure the correct charging sequence of the battery. Each charging cycle consists of three stages. The first stage is the Constant Current (CC) stage, during which the CSM controls the current to the battery so that it charges at a constant rate. The second stage is the Constant Voltage (CV) stage, during which the CSM regulates the voltage to a pre-determined level. The final stage is the termination stage, during which the CSM determines when the battery is fully charged and then shuts down the charger.

The LTC4100EG#TRPBF also includes a power path, which allows energy to flow between the battery and the power source. When the voltage of the power source is greater than that of the battery, the power path will enable the energy to flow from the power source to the battery, increasing its voltage level and charging it. When the battery has reached its desired voltage, the power path will stop the transfer of energy and the charging cycle will be completed.

In addition to its core functions, the LTC4100EG#TRPBF incorporates several features to increase protection and control, such as over-voltage, over-current, and over-temperature protection. It also includes an automated system for monitoring the battery\'s voltage, current and temperature levels. By requiring minimal external components and providing flexible charging options, the LTC4100EG#TRPBF can be the ideal choice for a variety of battery charging applications.

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