ISL6292-2CR5-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	--
Charge Current - Max:	2A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	6.5V
Interface:	USB
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	16-VQFN Exposed Pad
Supplier Device Package:	16-QFN (5x5)
Base Part Number:	ISL6292

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PMIC - Battery Chargers

The ISL6292-2CR5-T from Renesas is an ultra-low quiescent current smart battery charger, offering power management and various safety features for all types of single-cell Li-ion, NiMH, NiCd, and lead-acid batteries. In this article, we will discuss the application fields and working principle of the ISL6292-2CR5-T.

Application Fields

The ISL6292-2CR5-T is suitable for applications where low quiescent current, precise charge regulation and safety features are needed while charging single-cell Li-ion, NiMH, NiCd, and lead-acid batteries. The ISL6292-2CR5-T features a wide range of protection functions, allowing it to operate in numerous applications in medical, consumer, portable, automotive, and industrial devices. This IC can be used to charge single-cell Lithium-ion, Nickel-Metal Hydride, Nickel-Cadmium, and lead-acid batteries. It can be used to construct low-power battery charger systems, much like those used in portable consumer devices such as cell phones, tablets, and portable computers.

Working Principle

The ISL6292-2CR5-T is a buck-boost battery charger, meaning it can either boost or buck the input voltage to produce a regulated output voltage. In buck mode, the voltage is reduced by a factor, while in boost mode, the voltage is increased by a factor, until the desired level is reached.The IC detects the battery voltage and then activates its regulating circuit to ensure that the battery is charged to its maximum capacity. The IC also has a constant current and constant voltage mode, depending on the battery\'s charge state, thus providing optimum charging with minimum energy waste. The ISL6292-2CR5-T also has a safety feature that prevents overcharging and overheating of the battery. This is achieved by monitoring the temperature of the battery with a thermistor. In the event that the temperature begins to rise, the IC automatically reduces the current or voltage, thus preventing damage to the battery.In addition, the IC has a low quiescent current and a sleep mode feature, enabling it to be used in battery powered systems where power saving is a priority. In sleep mode, the IC consumes very little current. When the battery needs to be recharged, the IC automatically wakes up and begins charging the battery.

Conclusion

The ISL6292-2CR5-T provides an efficient and robust solution for charging single-cell Li-ion, NiMH, NiCd, and lead-acid batteries. Its various safety features make it suitable for use in a wide range of applications. Its low quiescent current and sleep mode enable it to be used in power-sensitive systems.

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