LTC4068EDD-4.2#PBF

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Introduction to the LTC4068EDD-4.2#PBF PMIC - Battery Charger

The LTC4068EDD-4.2#PBF is a PMIC (Power Management Integrated Circuit) designed for battery charging applications that require an input current up to 4.2A and an output voltage up to 36V. It uses a highly efficient, synchronous buck-boost architecture that enables a wide input range. It also has a programmable charge current and charge termination capability.

Application Fields

The LTC4068EDD-4.2#PBF is suitable for battery charging solutions in various applications, including consumer and portable electronics gadgets, such as cameras, laptops, tablets, and smartphones. It is also suitable for use in battery packs, cordless tools, GPS systems, and medical devices. Additionally, it can be used for telecom power systems and other cycling battery applications.

The device is also well suited for applications that require an input voltage range from 4.5V to 40V, such as 5V USB inputs, non-isolated automotive supplies, and industrial power supplies.

Working Principle

The LTC4068EDD-4.2#PBF is a charge-only, buck-boost battery charging controller with an input current limit of 4.2A and an output voltage range of 0V to 36V. Using this power management integrated circuit, a battery can be charged from either a high voltage or a low voltage input source.

This device works on the principle of synchronous buck-boost architecture. In this architecture, the charging current flows from the input source to the battery via the buck converter, and then is discharged to the ground. When the input voltage is greater than the battery voltage, the buck-boost converter steps down the voltage and charges the battery. Conversely, when the input voltage is lower than the battery voltage, the buck-boost converter steps up the voltage and charges the battery.

The device contains several safety features including over-voltage, over-temperature, and overload protection. Additionally, it has many user-programmable settings such as the input voltage, maximum output voltage, maximum output current, pre-charge current, termination current, and many others.

The LTC4068EDD-4.2#PBF is a highly efficient, compact, and simple device for battery charging applications. It provides a high level of flexibility and reliability, which makes it suitable for many applications. Furthermore, it is very safe to use and provides an excellent solution for battery charging.

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