LTC4091IDJC#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	--
Current - Charging:	--
Programmable Features:	Timer
Fault Protection:	Over Temperature
Charge Current - Max:	1.5A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	36V
Interface:	--
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	22-WFDFN Exposed Pad
Supplier Device Package:	22-DFN (6x3)
Base Part Number:	LTC4091

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Introduction

The LTC4091IDJC#PBF is a Li-Ion linear battery charger and a member of the LTC4091 series of ICs. These devices allow designers to quickly and easily design a low-cost, space-saving battery charger for a variety of Li-Ion batteries. Thanks to its integrated charge current and voltage limit, the LTC4091IDJC#PBF is an ideal choice for applications that require high accuracy, fast charge times, and low cost of charging. The device’s low cost, small size, and minimal external components make the LTC4091IDJC#PBF an ideal solution for small, battery-operated handheld or mobile devices. The LTC4091IDJC#PBF can be used as a standalone charger or in conjunction with a power source such as an AC/DC adapter or USB port. It is well suited for both portable and desktop applications where high output current is not required.

Application Field

The LTC4091IDJC#PBF is well suited for applications such as cell phones, PDAs, digital audio players, laptop computers, game consoles, digital cameras, and portable DVD players. It can be used in applications where the requirement is for low power charging with minimal external components. The device is ideal for applications that require a low maintenance solution as it can be used with off-the-shelf Li-Ion batteries and can quickly sense the battery’s charge level and then modify the charge current to ensure a fast and safe charge. With no need to monitor the charging process, the LTC4091IDJC#PBF can be used in applications with minimal user interaction.

Working Principle

The LTC4091IDJC#PBF works in accordance with the principles of linear charging. To ensure maximum safety and performance, the device is designed to accurately monitor the charge current and voltage of the battery for optimal charge times and fast response to changing conditions. The device features a built-in current limit, voltage and temperature monitors, and Charge Status Indication (CSI). The LTC4091IDJC#PBF is also protected against overvoltage and short circuit conditions.To charge the battery, a DC power source such as an AC/DC adapter or USB port is connected to the VIN and GND pins of the LTC4091IDJC#PBF. The LTC4091IDJC#PBF then senses the voltage and current on its inputs and begins the charging process accordingly.The LTC4091IDJC#PBF uses a proprietary charging algorithm that can determine the state of charge of the battery. It automatically regulates the charge current to meet the battery specifications and optimize the charging process. The device monitors the battery’s charge status and temperature and stops the charging process in order to prevent overcharging or over-discharging.The LTC4091IDJC#PBF also provides charge status indication that can be used to determine the state of charge of the battery. This indication can be used to display the battery’s charge status on a smartphone or other user interface.

Conclusion

The LTC4091IDJC#PBF is a Li-Ion linear battery charger that is ideal for use in any application where space and cost are concerns. Its small size and minimal external components make the device an ideal solution for handheld or mobile applications.Its integrated current limit, voltage and temperature monitors, and Charge Status Indication (CSI) make the device easy to use and maintain and protect it from overcharging and short circuits. Its proprietary charging algorithm allows the device to accurately determine the charge of the battery and regulate the charge current to optimize charging times. Its charge status indication can be used to provide feedback on the battery’s charge status on an user interface.

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