LTC4056ETS8-4.2#TRMPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Timer
Fault Protection:	Over Current, Over Temperature
Charge Current - Max:	700mA
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	6.5V
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	SOT-23-8 Thin, TSOT-23-8
Supplier Device Package:	TSOT-23-8
Base Part Number:	LTC4056

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PMIC - Battery Chargers: LTC4056ETS8-4.2#TRMPBF Application Field and Working Principle

The LTC4056ETS8-4.2#TRMPBF is an ultra-low quiescent current, load-disconnect linear battery charger supports up to 4.2V float voltage and 0.5A charge current with thermal regulation. This PMIC – Battery Chargers product is designed to charge 3.6V and 4.2V lithium-ion batteries from a low input voltage source such as USB power and provides an advanced charging method that enables fast charge and maintains the battery with no damage.

Features

The LTC4056ETS8-4.2#TRMPBF PMIC – Battery Chargers product has an ultra-low quiescent current that allows for long battery life and improved system efficiency, measurable LCD pulsing for accurate display of battery charging conditions, thermal regulation for improved system reliability and safety, and an adjustable charge voltage up to 4.2V for extended battery life.This battery charger also features an advanced charging method that enables fast charge to be completed in 1.5 hours and a charge termination indicator (CTI). It offers the flexibility to choose between USB source and input voltage source, making it suitable for a wide range of applications. The device also features over-voltage and over-current protection, thermal regulation, and protection against incorrect insertion.

Applications

The LTC4056ETS8-4.2#TRMPBF PMIC – Battery Chargers product is suitable for a wide range of applications including automotive, communication, consumer electronics, industrial control, medical and portable electronic devices. It can be used to charge 3.6V and 4.2V lithium-ion batteries, as well as other lithium-based batteries.

Working Principle

The LTC4056ETS8-4.2#TRMPBF applies advanced charging techniques to enable fast charge termination with maximum efficiency and safety. The device operates by charging the battery from a USB power source or an input voltage source.When the device detects that the battery voltage has reached a predetermined threshold, it switches from constant current charge to constant voltage charge. This allows for a fast charge cycle and prevents overcharging or over discharging of the battery.The device ensures safe charging of the battery by including thermal regulation, over-voltage protection, over-current protection, and protection against incorrect insertion of the battery. It also allows for an adjustable charge voltage up to 4.2V to extend battery life.The device utilizes load disconnect circuitry and an adjustable current sense resistor to optimize charge efficiency and protect against load transient drops. In addition, the device includes a low impedance FET that can deliver up to 2A of output current.The device includes an adjustable charge rate, which can be adjusted by changing the input voltage or the current sense resistor. It also includes an end-of-charge indicator for measuring the charge state of the battery.Overall, the LTC4056ETS8-4.2#TRMPBF is an ideal choice for powering portable electronic devices and providing fast, safe, and efficient charging of 3.6V and 4.2V lithium-ion batteries. The device features an advanced charging method that enables fast charge while protecting the battery from overcharging or over discharging. It also features adjustable charge voltage, thermal regulation, over-voltage and over-current protection, and end-of-charge indicator, making it a universally suitable choice for a wide range of applications.

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