LTC4155EUFD#PBF

LINEAR TECHNOLOGY  LTC4155EUFD#PBF  芯片, 电源管理器/充电器, 3.5A 锂离子, I2C, 28QFN

The is a dual input Power Manager/3.5A Li-ion Battery Charger with I²C control and USB OTG. It seamlessly manages power distribution from two 5V sources, such as an USB port and a wall adapter, to a single-cell rechargeable Lithium-Ion/Polymer battery and a system load. The LTC4155"s switching battery charger automatically limits its input current for USB compatibility or may draw up to 3A from a high power wall adapter. The high efficiency step-down switching charger is designed to provide maximum power to the application and reduced heat in high power density applications. I²C adjustability of input current, charge current, battery float voltage, charge termination and many other parameters allows maximum flexibility. I²C status reporting of key system and charge parameters facilitates intelligent control decisions.

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High efficiency charger capable of 3.5A charge current

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Monolithic switching regulator makes optimal use of limited power and thermal budget

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Dual input overvoltage protection controller

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Priority multiplexing for multiple inputs

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I²C/SMBus control and status feedback

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NTC thermistor ADC for temperature dependent charge algorithms JEITA

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Instant-on operation with low battery

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Battery ideal diode controller for power management

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USB on-the-go power delivery to the USB port

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Full featured Li-ion/polymer battery charger with four float voltage settings