LTC4012IUF-3#TRPBF

Series:	PowerPath™
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Multi-Chemistry
Number of Cells:	--
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Voltage, Reverse Current
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	28V
Interface:	--
Operating Temperature:	-40°C ~ 125°C (TA)
Package / Case:	20-WFQFN Exposed Pad
Supplier Device Package:	20-QFN (4x4)
Base Part Number:	LTC4012

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IntroductionThe LTC4012IUF-3#TRPBF is a PMIC (Power Management IC) battery charger. It combines one 4.0A high-current and low-quiescent inductor-based system power supply and one 1-cell Li-ion battery charger into a single package. With its low quiescent current and excellent full-load efficiency, the device is designed to enable long battery life from a single cell Li-ion/Polymer battery even when charging with a constant current/constant voltage (C/CV) regulation algorithm.Application FieldThe LTC4012IUF-3#TRPBF PMIC Battery Charger is primarily used in applications that require long battery life and high performance. These applications can range from health trackers and medical devices, to smartphones, tablets, and other portable electronics. It has the capability to support up to 4.0A of charge current, which can support a wide range of battery sizes. Additionally, the device can autonomously switch sources of power during charging cycles, making it well suited for ultra-low power systems.Working PrincipleThe LTC4012IUF-3#TRPBF features an inductor-based power supply and Lithium-Ion/Polymer battery charger. The system power supply section is designed for easy implementation of low quiescent current, high efficiency power supply applications. On the charging side, the device houses a high integration, single-cell Lithium battery charger. The charger controller supports up to 4.0A of charge current and minimizes the number of external components required for a discrete charger input setup. The device also supports an external NTC and two external sense resistors for Li- Ion/Polymer application flexibility. The charging algorithm and control circuitry is designed to adapt to a variety of applications, battery chemistries and charge profiles, resulting in a robust and efficient charger controller solution.ConclusionThe LTC4012IUF-3#TRPBF PMIC Battery Charger provides a high-performance charging solution that is well suited for low-power applications. With its integrated 4.0A power supply and up to 4.0A of charge current, the device can support a wide range of battery sizes and battery chemistries. Additionally, the device supports voltage and current important features such as overcurrent protection and autonomous power source switching. Ultimately, the device is designed to provide a robust, reliable, and efficient charging solution for a variety of applications.

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