LTC4120EUD-4.2#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	--
Charge Current - Max:	400mA
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	40V
Interface:	--
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	16-WFQFN Exposed Pad
Supplier Device Package:	16-QFN (3x3)
Base Part Number:	LTC4120

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TheLTC4120EUD-4.2#PBF is a highly integrated battery charger ideal for powering space limited, environmentally sensitive devices consuming up to 10 Watts or for protecting battery packs up to 10 Amp-hours. Designed to balance system power demands and fuel cell or battery capacity, this fully integrated PMIC – Battery Chargers features a Maximum Power Point Controller to eliminate the need for external power component up to 9.2 V and synchronous rectification for low power loss operation.The LTC4120EUD-4.2#PBF operates down to -40°C and provides a high level of system integration: wide input voltage range of 4.2 V to 24 V, up to 5.1V of maximum output voltage and up to 3.5 A of continuous output current capability. This feature allows it to be applied in numerous practical operations. It also offers reliable power conversion with cost and size reductions, compared to discrete solutions, in applications such as wearable electronics, IoT, industrial and portable medical systems.

Working Principle

The LTC4120EUD-4.2#PBF is based on Maximum Power Point Tracking (MPPT) technology using a proprietary control algorithm, delivering unrivalled power efficiency to maximize system autonomy. This algorithm enables the charger to operate along with several sources simultaneously, such as solar, fuel cells or batteries and it is also able to select the best power source dynamically, based on the available sources. The LTC4120EUD-4.2#PBF is an intelligent battery charger for rechargeable Li-ion and Li-polymer batteries. It can simultaneously measure the output current and the voltage of the battery and decide the correct charge characteristics.The charger also provides various safety protections such as short circuit protection, thermal overload protection, battery overcharge protection, battery over-discharge protection, overcurrent protection and reverse battery protection.

Application Fields

The LTC4120EUD-4.2#PBF can be found in a wide range of applications. It is a very useful and versatile chip, capable of powering space limited, environmentally sensitive devices consuming up to 10 Watts. It’s highly efficient performance and integrated features allow it to be applied in a variety of applications, such as:

• Wearable electronics.
• IoT Applications.
• Industrial Systems.
• Portable Medical Devices.
• Li-ion and Li-polymer battery charging.
• Battery protection.

It is also popular in automotive applications such as car audio systems, GPS systems, remote keyless entry systems, fuel cells, and solar powered solutions.Finally, it is a great option for powering or charging portable digital or communications devices such as smartphones, tablets, game consoles and navigation systems.

Conclusion

TheLTC4120EUD-4.2#PBF is a PMIC - Battery Chargers chip, offering unrivalled power efficiency, inexpensive cost and small form factor, making it ideal for space limited, environmentally sensitive devices consuming up to 10 Watts or for protecting battery packs up to 10 Amp-hours, with a wide range of applications and applications fields, range from automotive and industrial uses to wearable, portable and communications devices. It features maximum power point tracking, with a dynamic power selection for the best power source between fuel cells, batteries, and solar energy, and it also provides several safety protection mechanisms, such as short-circuit, over-current, over-voltage and over-discharge protection.

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