LTC4054ES5-4.2#TRMPBF

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The LTC4054ES5-4.2#TRMPBF is an advanced, high-efficiency, single cell Li-Ion charging and system power supply controller with an integrated 1.5MHz free-running synchronous buck converter. This PMIC - Battery Charger provides a range of features and capabilities that make it suitable for a wide range of aplications. In this article, we will discuss the application field and working principle of the LTC4054ES5-4.2#TRMPBF.

Application Field

The LTC4054ES5-4.2#TRMPBF is a highly integrated and versatile device that can be used for a variety of applications, including mobile phones, laptop PCs, and power management applications. It is designed for single-cell Li-ion or LiPo battery charging and can support a wide input voltage range (2.7V - 5.5V), allowing for use in a variety of applications. The device can be operated with either a DC boost converter or an external p-channel MOSFET, making it an ideal solution for both battery charging and system power requirements.

The LTC4054ES5-4.2#TRMPBF supports both fast charging and trickle charging. It uses a regulated current limiting topology to provide precise current control over a wide range of battery capacities. In addition, it uses programmable safety timer, temperature monitoring, and battery detection to ensure reliable charging performance.

The device is also capable of providing system power applications. It has an integrated boost converter that can provide up to 2A of current, allowing it to be used as an on-board system power supply. The converter can be configured to generate either a fixed output voltage or an adjustable output voltage. It also has the ability to be configured for a powered standby state, allowing it to serve as an auxiliary power source.

Working Principle

The LTC4054ES5-4.2#TRMPBF is a switching controller with a 1.5MHz free-running synchronous buck converter. In order to charge a single cell Li-Ion battery, the device is designed with two main stages. The first stage is a constant current (CC) mode, in which the device limits the amount of current entering the battery. The second stage is a constant voltage (CV) mode, in which the voltage put into the battery is regulated. The device switches between CC and CV mode depending on battery voltage and current.

The LTC4054ES5-4.2#TRMPBF also monitors the battery temperature and current in order to prevent thermal runaway. In addition, it can provide overvoltage protection, reverse current blocking, and active charge termination. The device will terminate the charge when the battery is full in order to maximize battery life.

Finally, the LTC4054ES5-4.2#TRMPBF has a programmable safety timer and current level monitors, making it an ideal solution for battery charging and system power applications. The device is capable of providing high efficiency and accurate current control, making it an ideal choice for a variety of mobile, portable, and power management applications.

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