LINEAR TECHNOLOGY  LTC4155EUFD#PBF  Battery Charger for 1 Cell of Li-Ion, Li-Pol battery, 5.5V input, 4.05V / 3.5A charge, QFN-28

Technical Data Sheet (503.10KB) EN See all Technical Docs

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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

Product Information

Battery Type:
Li-Ion, Li-Pol
Input Voltage:
Battery Charge Voltage:
Charge Current Max:
Battery IC Case Style:
No. of Pins:
No. of Series Cells:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
MSL 1 - Unlimited
No SVHC (17-Dec-2015)

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Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Tariff No:
Weight (kg):

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