LTC1760IFW#PBF

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  PMIC - Battery Chargers are integrated circuits that are responsible for charging batteries, monitoring their levels and also providing protection in critical cases. The LTC1760IFW#PBF is one such PMIC that is designed to charge and monitor alkaline, NiCd and NiMh battery packs up to 12.5 V and 6 cells.
  
  This chip is used in many applications which includes medical instruments, portable communication systems, toys, and other high powered devices. It features accurate voltage control and also works reliably in various temperatures. It also comes with several safety features that can detect short circuitry and bad batteries.
  
  Working Principle:

  • The chip first carries out a “staircase” of level-shifting start up sequences. This allows the chip to safely bring the battery voltage close to the desired value in order to begin the charging process.
  • During the main charging cycle, the voltage is regulated by the feedback loop which consists of a sensing resistor and an oscillator. The resistor is responsible for measuring the battery voltage while the oscillator determines the frequency of the charging current.
  • Finally, the chip monitors the rate of charge and adjusts the charging current accordingly. In this manner, it can detect any anomalies in the charging process and take measures to protect the battery
  
  In order to increase the battery’s life, the LTC1760IFW#PBF is designed to include several safety features. It, for instance, can detect abnormal temperature and shut itself off if the temperature is too high. It can also recognize faults such as short circuits and over-current conditions and turn itself off for safety reasons.
  
  Finally, the chip monitors and ensures that the charging current matches the battery’s capacity. This enables the chip to charge the batteries in a balanced manner and thereby extends their life.
  
  In short, the LTC1760IFW#PBF is a highly reliable chip and is an efficient way of charging and monitoring both NiCd and NiMh battery packs up to 12.5 V and 6 cells. Its safety features make it suitable for use in a variety of applications.

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