BQ24192RGER

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Current, Over Temperature, Over Voltage
Charge Current - Max:	4.5A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	17V
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	24-VFQFN Exposed Pad
Supplier Device Package:	24-VQFN (4x4)
Base Part Number:	BQ24192

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Introduction

The Texas Instruments BQ24192RGER is a Battery Charger IC for high power applications that uses a flexible 4-step battery charging profile to increase compatibility with a wide variety of Li-ion cells. This IC is suitable for use in personal computers, tablet PCs, smart phones, and various other consumer electronics, home appliances, and heath care products.The main feature of the BQ24192RGER is its high input voltage range of 2.9V to 9V, which allows it to accept power from sources such as wall adapters, USB ports, and single cell Li-ion batteries. A Boost voltage of up to 8V is also programmable, which makes it capable of charging a wide range of batteries using the 4-step charging current algorithm.

Application Field

The BQ24192RGER is a great choice for portable device applications, as it effectively balances numerous battery requirements such as high power density and long battery life. Its high input voltage range makes it compatible with various power sources while its wide temperature range gives it the ability to be used in different conditions.The IC is also suitable for use in mobile phones, cameras, portable data storage devices (PDAs), wearable devices, industrial and medical equipment, and toys. It is a great choice for designers looking for smart battery charger solutions.

Working Principle

The BQ24192RGER Battery Charger IC works using the basic principle of Li-ion charging, which is Constant Voltage (CV) and Constant Current (CC). As the battery voltage rises and approaches the target voltage set by the charger IC, the charger IC reduces the current and maintains the voltage. When the battery is close to its full power, the current is almost negligible, allowing only a trickle charge.The BQ24192RGER Battery Charger IC features a 4-step charge algorithm, which has been optimized for charging single cell Li-ion batteries. The 4 steps are as follows:

• Preconditioning
• Constant Voltage (CV)
• Constant Current (CC)
• Trickle Charge

In the Preconditioning step, a low current charging (<100 mA) is applied to the battery, which removes losses associated with discharging and charging the battery. The CV stage applies the targeted voltage across the battery terminals, while the CC stage is designed to optimize the energy transfer rate. Finally, the Trickle Charge stage applies a low current (<50 mA) to the battery to maintain its charge.

Conclusion

The BQ24192RGER Battery Charger IC is a powerful and efficient charger for portable device applications. Its high input voltage range and wide temperature range make it suitable for a variety of applications. The charger is also extremely user-friendly, as its 4-step battery charging profile is easy to configure and optimize. It is a great choice for designers looking for an efficient and reliable charging solution for their portable devices.

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