LTC4015IUHF#TRPBF

Series:	PowerPath™
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Multi-Chemistry
Number of Cells:	2
Current - Charging:	Constant - Programmable
Programmable Features:	Current, Timer
Fault Protection:	Over Temperature
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	35V
Interface:	I²C
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	38-WFQFN Exposed Pad
Supplier Device Package:	38-QFN (5x7)
Base Part Number:	LTC4015

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Overview of PMIC - Battery Chargers

A PMIC (Power Management IC) is an integrated circuit that helps manage and regulate power for electronic devices by controlling loads, providing power to and monitoring the statuses of different components. Battery chargers are a major portion of PMICs and are used to charge, control and monitor the charging process of batteries used in electronic devices. PMIC - Battery chargers let manufacturers easily design charging systems for specific applications. For example, the LTC4015IUHF#TRPBF from Linear Technology is one such PMIC - Battery charger that is designed for charging single, double or triple Li-Ion cells at up to 3 Amps, making it suitable for portable consumer, communication and military applications.

Application Field & Working Principle of the LTC4015IUHF#TRPBF

The LTC4015IUHF#TRPBF is an advanced, synchronous, high current battery charger IC, available in a tiny, thermally-enhanced, 3mm × 3mm 16-lead, plastic DFN package. It is designed to support medium to large capacity Li-Ion and Li-Polymer batteries commonly used in most radio frequency (RF) and wireless products, such as cellular phones, laptops, tablets, digital cameras and personal digital assistants (PDAs).The LTC4015IUHF#TRPBF supports efficient, constant current/constant voltage (CC/CV) battery charging, with temperate-limited charging, charge-termination and automatic recharge. It operates over a wide input voltage range of 5 V to 28 V, making it suitable for any of a wide range of wall adapter power sources. An integrated display driver turns the bottom LED on and off to indicate the charging status, and an internal power switch handles approximately 3 A peak charge and termination currents.The LTC4015IUHF#TRPBF accomplishes this by employing a synchronous buck architecture, as well as monitoring input current and charging current automatically. This architecture and the use of constant current/constant voltage charging ensures a fast and safe charging process, including temperature-limited recharging and automatic termination of the charging process at the correct time. Aside from its charging performance, the LTC4015IUHF#TRPBF also offers excellent EMI suppression for RF-sensitive applications, low quiescent current, high efficiency and thermal regulation of the charge current.

Conclusion

The LTC4015IUHF#TRPBF PMIC - Battery charger IC is a multipurpose device that is suitable for a wide range of portable and stationary applications, thanks to its wide operating voltage range and variable charge currents. It is an advanced device that makes use of synchronous buck architecture, temperature-limited charging, charge-termination and automatic recharge capabilities, making it a reliable, efficient and safe device for charging Li-Ion and Li-Polymer batteries.

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