LTC4054LES5-4.2

The LTC4054LES5-4.2 is a lithium-ion battery charger IC designed by Analog Devices. It features a linear charging architecture, providing a constant current (CC) and constant voltage (CV) charging profile for single-cell lithium-ion batteries. The IC is optimized for applications where space is limited, offering a small SOT-23 package.
Key features include an input voltage range of 4.5V to 12V, a programmable charge current, and an automatic charge termination based on a timer or current taper. It includes protection features such as thermal regulation and battery temperature monitoring to ensure safe operation.
The LTC4054 also comes with an optional status indication for charge completion and fault conditions. Its low quiescent current and efficiency make it suitable for portable devices, such as smartphones, wearables, and other battery-operated applications. This IC simplifies the design process for battery management systems, ensuring reliable and efficient charging.

The LTC4054LES5-4.2 is a lithium-ion battery charger IC designed for charging single-cell lithium-ion batteries. Key features include:
1. Constant Current/Constant Voltage (CC/CV): Implements a CC/CV charging profile for optimal battery charging.
2. Fixed Output Voltage: Delivers a regulated output voltage of 4.2V, suitable for lithium-ion cells.
3. High Efficiency: Designed for efficient operation, minimizing power loss during charging.
4. Thermal Regulation: Includes thermal regulation to prevent overheating and ensure safe operation.
5. Automatic Recharge: Automatically recharges the battery when the voltage drops below a set threshold.
6. Simple Design: Requires minimal external components, simplifying the PCB layout.
7. Low Quiescent Current: Maintains low power consumption in standby mode.
8. Protection Features: Includes features like overvoltage protection and thermal shutdown for enhanced safety.
These features make the LTC4054LES5-4.2 ideal for portable electronic devices and applications requiring reliable lithium-ion battery charging.

The LTC4054LES5-4.2 is packaged in a 5-lead SOT-23 surface mount package. This compact form factor is designed for space-constrained applications while providing efficient thermal performance and electrical connectivity.

The LTC4054LES5-4.2 is a lithium-ion battery charger IC housed in a 5-lead SOT-23 package. It features a total of 5 pins with the following functions:
1. VIN: Input voltage supply for the charger.
2. GND: Ground reference for the circuit.
3. VOUT: Output voltage to the battery being charged.
4. PROG: Programming pin for setting the charge current through an external resistor.
5. THERM: Thermal monitoring pin to disable charging if the temperature exceeds a preset threshold.
This IC is designed for charging single-cell lithium-ion batteries with a fixed output voltage of 4.2V. It incorporates features such as a constant current/constant voltage charging method, making it suitable for portable device applications.

The LTC4054LES5-4.2 is manufactured by Analog Devices, Inc., a semiconductor company that specializes in analog, mixed-signal, and digital signal processing technologies. Analog Devices, founded in 1965, is known for its high-performance integrated circuits and solutions used in various applications, including communications, industrial automation, automotive, and consumer electronics. The company focuses on innovative technology and provides products that enable efficient signal processing and power management, making it a key player in the electronics industry.

The LTC4054LES5-4.2 is primarily used for charging lithium-ion and lithium-polymer batteries in portable electronics, including mobile phones, tablets, and wearable devices. Its features support applications in battery-powered systems, such as power banks, handheld tools, and medical devices. The device is suitable for space-constrained environments due to its small footprint, making it ideal for consumer electronics and IoT applications.

Equivalent products to the LTC4054LES5-4.2 include the MCP73831, MCP73832, and BQ24074. These chips are similar lithium-ion battery charging solutions with features such as constant current and constant voltage charging. Be sure to verify specifications and compatibility for your specific application.