LTC4000EGN-1#PBF

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The LTC4000EGN-1#PBF is an advanced power management integrated circuit (PMIC) device designed specifically for battery charging applications. It is designed to provide an optimal charging solution for various types of rechargeable cells, including Li-ion and Li-polymer cells. The LTC4000EGN-1#PBF is designed with a Constant-Voltage (CV) and a Constant-Current (CC) phase to ensure precise charging current and voltage. This article will discuss the application field as well as the working principle of the LTC4000EGN-1#PBF.

Application Field

The LTC4000EGN-1#PBF is a stand-alone battery charger that can be used for both single-cell and multi-cell battery packs. The device is suitable for use in digital still cameras, portable media players, digital video cameras, and other ancillary electronic devices that require precise battery charging. Additionally, the device is well-suited for low-current, low-power applications such as barcode scanners, blood glucose meters, and other medical products. The LTC4000EGN-1#PBF is also suited for applications where a precise charge termination method is desired.

Working Principle

The working principle of the LTC4000EGN-1#PBF is quite simple. The device operates in two majo phases: Constant-Voltage (CV) and Constant- Current (CC) phase. During the CV phase, the device utilizes a voltage regulator with a set current limit of approximately 1.5A to maintain a charge level of 4.2V for Li-ion batteries or 3.65V for Li-polymer batteries. During the CC phase, the device switches to a current regulator that monitors the current flowing into the battery pack and adjusts its current limit in order to maintain a safe, steady charge level.

The device also includes two different safety mechanisms. First, it includes an over-temperature protection (OTP), which ensures that the charge level does not exceed a certain temperature. Second, it includes an over-voltage protection (OVP) feature, which monitors the voltage and prevents it from exceeding the preset limit. Additionally, the device has an adjustable charge termination method, allowing the user to set the termination and trickle charge conditions, depending on the charge level of the particular battery pack.

Conclusion

The LTC4000EGN-1#PBF is an advanced power management integrated circuit (PMIC) device specifically tailored for battery charging applications. It offers an optimal charging solution for various types of rechargeable cells, including Li-ion and Li-polymer cells. The device is suitable for single-cell and multi-cell battery packs and is well suited for low-power and low-current applications. The device features a Constant-Voltage (CV) and a Constant-Current (CC) phase and also includes safety mechanisms such as over-temperature protection and over-voltage protection. Overall, the LTC4000EGN-1#PBF is an ideal choice for battery charging applications.

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