LTC4057ES5-4.2#TRMPBF

PMIC - Battery Chargers: LTC4057ES5-4.2 #TRMPBF Application Field and Working Principle

The LTC4057ES5-4.2 #TRMPBF is an advanced battery charger controller specially designed to provide an efficient, low-power and cost-effective solution for charging single-cell lithium batteries. It is tailored for mobile phone applications and includes standard features such as reverse battery protection, trickle charging, thermal regulation, and short-circuit protection. The device also provides excellent current limit accuracy in the range of ±1% ±5% and temperature accuracy in the range of ±4°C.

The LTC4057ES5-4.2#TRMPBF is based on a constant-current/constant-voltage architecture and provides a voltage regulation accuracy of ±0.8%. It supports USB input, low-battery detection, and an internal temperature sensor. The device provides current and temperature regulation, reverse battery protection, trickle charging, and short-circuit protection, as well as thermal sensing to detect very high contact temperatures.The LTC4057ES5-4.2#TRMPBF is a perfect choice for battery charging in all kinds of mobile applications, such as phones, laptops, digital cameras, MP3 players and other portable devices.

Operation and Working Principle of LTC4057ES5-4.2 #TRMPBF

The LTC4057ES5-4.2#TRMPBF operates at a constant current until the voltage at the battery is equal to the set voltage point. A temperature sensor detects the temperature of the battery or contact and provides additional safety features against high temperature. The device includes an internal PWM controller to optimize the power supply.

The LTC4057ES5-4.2#TRMPBF measures the battery voltage and compares it to the voltage set point. If the battery voltage is higher than the voltage set point, the device reduces the amount of current supplied to the battery. If the battery voltage is lower than the voltage set point, then the device increases the amount of current being supplied to the battery. In either case, the current is regulated such that the battery is charged with a constant current and the voltage is maintained at the set level.

The LTC4057ES5-4.2#TRMPBF also provides the facility to limit the maximum input current from the power supply. This protects the power supply from excessive current draw. The device also features low-battery detection and reverse battery protection. This ensures that the device does not draw excessive current from the battery and does not attempt to charge the battery when the battery has been disconnected or reversed.

The device also features an internal temperature sensor which is used to regulate the battery charging current. If the temperature of the battery or contact reaches the pre-set limit, the device will reduce the charging current and prevent the battery from being overcharged.

Benefits

The LTC4057ES5-4.2#TRMPBF provides a low-cost, low-power solution for charging single-cell lithium batteries. The device offers an excellent current regulation accuracy, temperature regulation accuracy, and voltage regulation accuracy. The device also provides short-circuit protection, reverse battery protection, trickle charging and thermal sensing against high contact temperatures.

The device provides a high level of safety for battery charging applications. The device also provides a high level of performance and efficiency, making it an ideal solution for charging batteries in all kinds of mobile applications.