Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Multi-Chemistry
Number of Cells:	1 ~ 4
Current - Charging:	--
Programmable Features:	--
Fault Protection:	Over Current, Over Voltage, Short Circuit
Charge Current - Max:	--
Battery Pack Voltage:	16.8V
Voltage - Supply (Max):	24V
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	20-VFQFN Exposed Pad
Supplier Device Package:	20-VQFN (3.5x3.5)
Base Part Number:	BQ24735

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BQ24735RGRR application field and working principle

The BQ24735RGRR IC is a type of power management integrated circuit (PMIC) primarily used for charging battery packs for portable electronic devices. It is generally classified as a battery charger due to its primary operation. The BQ24735RGRR IC incorporates a variety of circuitry and components for the efficient power delivery and management, including an LED indicator for charge status, an autoretry timer, and an internal temperature thermal shutdown.The BQ24735RGRR IC is capable of charging cells of various chemistries, such as Li-Ion, Li-Polymer, NiMH and even lead-acid batteries. In addition to charging, the BQ24735RGRR IC also features integrated synchronous boost converter and buck converter, allowing the power to be distributed and managed safely and efficiently.The BQ24735RGRR IC is available in two versions; the first utilizes a USB input power source, capable of charging USB compatible battery cells, while the second is specifically designed for wall charger use, with input power capacity up to 20V for charging larger batteries. In either version, the BQ24735RGRR IC provides excellent charging performance and battery protection, including internal thermal protection, short circuit protection, current limit protection, and overvoltage protection.The BQ24735RGRR IC implements a variety of charging algorithms and techniques for efficient battery charging, ensuring that the battery is fully charged quickly and safely. The device utilizes a constant current/constant voltage (CC/CV) charging algorithm, which is suitable for all types of rechargeable batteries. This algorithm allows the BQ24735RGRR IC to determine the optimal charging voltage and current to suit the battery type, which results in as much charge being stored as possible in a given amount of time without damaging the battery.The BQ24735RGRR IC also features reverse current protection, which prevents battery power loss when the device is not in use. Additionally, the circuit provides overvoltage and temperature protection, as well as input overvoltage protection, to ensure that the battery charging operations are safe and efficient.The main feature of the BQ24735RGRR IC that stands out is its flexibility and scalability, allowing the device to be used in various applications and systems requiring efficient battery charging. This device is well suited for a variety of battery packs, from small single cell applications to large battery packs. Its reliable safety features, wide power input range, and high charging current capability together make the BQ24735RGRR IC an ideal choice for use in a wide range of portable battery-powered devices.

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