LTC4060EDHC#PBF

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PMIC - Battery Chargers: LTC4060EDHC#PBF Application Field and Working Principle

PMIC (Power Management Integrated Circuits) battery chargers are electronic devices used to regulate the charging and discharging of batteries, usually lithium-ion. The LTC4060EDHC#PBF battery charger is one such device. It is a high efficiency, stand-alone lithium-ion and LiFePO4 battery charger with over-temperature, under-voltage, and open circuit protection.

Based on its SOT-223 (2A - 4V) package and its maximum output current of 2.1A, the LTC4060EDHC#PBF charger is capable of charging most lithium-ion and LiFePO4 batteries. It is designed to be used in space-constrained portable applications, such as mobile devices, medical equipment, and handheld instruments. The charger is self-contained, providing all the necessary functions for maximum charge current control.

The LTC4060EDHC#PBF charger’s operating range is fairly wide. It can charge at up to 4V with input voltages ranging from 4.5V to 20V. It also provides 3.8V and 4.2V charge regulation with ±4% accuracy and 0.4% resolution. The maximum output current of 2.1A ensures fast charging and its current limited, thermal protection ensures safe operation. The charger also features an overcharge protection feature that disconnects it from the battery when the charge reaches 4.2V.

The LTC4060EDHC#PBF battery charger uses a simple two-stage charge method. When it first powers up, it begins in the pre-charge stage. Its current is limited in this stage until the battery voltage reaches the pre-charge threshold. The charger then proceeds to the constant current stage, where the current is increased until it reaches the maximum allowable output current or the battery reaches 4.2V (whichever comes first).

The LTC4060EDHC#PBF battery charger also comes with integrated safety features. These include an under-voltage lockout function that prevents the battery from entering deep-discharge states, and an output voltage monitor that shuts off the charger if the output voltage exceeds 5.6V. Additionally, the charger includes an over-temperature protection feature that switches off the output if the temperature rises above 100°C.

In conclusion, the LTC4060EDHC#PBF battery charger is a high efficiency, stand-alone lithium-ion and LiFePO4 charger designed to be used in space-constrained portable applications. It affords fast, efficient charging in a wide operating range with a maximum output current of 2.1A, and features comprehensive safety features such as UVLO, OVP, and over-temperature protection.

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