Battery Charger for 1 Cell of Li-Ion, Li-Pol battery, 5.5V input, 4.05V / 3.5A charge, QFN-28


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Product Overview

The LTC4155EUFD#PBF 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.
  • High efficiency charger capable of 3.5A charge current
  • Monolithic switching regulator makes optimal use of limited power and thermal budget
  • Dual input overvoltage protection controller
  • Priority multiplexing for multiple inputs
  • I²C/SMBus control and status feedback
  • NTC thermistor ADC for temperature dependent charge algorithms (JEITA)
  • Instant-on operation with low battery
  • Battery ideal diode controller for power management
  • USB on-the-go power delivery to the USB port
  • Full featured Li-ion/polymer battery charger with four float voltage settings


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Product Information

Li-Ion, Li-Pol
MSL 1 - Unlimited
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