LTC4054LES5-4.2#TR Battery Charger IC

The LTC4054LES5-4.2#TR is a compact, high-performance standalone linear battery charger IC from Linear Technology designed specifically for single-cell lithium-ion batteries. This efficient and sophisticated integrated circuit offers a simple and reliable charging solution for portable electronic devices.

Key Features:

• Charge Voltage: The LTC4054LES5-4.2#TR is tailored for charging batteries to a precise float voltage of 4.2V, ensuring optimal battery performance and longevity.
• Charge Current: It can deliver up to 800mA of charge current, which is programmable via an external resistor, allowing for flexibility in the charging rate to suit different battery capacities.
• No External MOSFET: This IC integrates an internal Power MOSFET, eliminating the need for external components and simplifying the design process.
• Thermal Regulation: To protect against overheating, the LTC4054LES5-4.2#TR features thermal regulation that automatically reduces charge current.
• Charge Termination: It incorporates an automatic charge termination feature once the battery is fully charged, preventing overcharging and enhancing battery safety.
• Presense Detection: The IC includes a feature to detect the presence of the battery, ensuring that charging only occurs when a battery is connected.
• Small Form Factor: The LTC4054LES5-4.2#TR comes in a compact SOT-23 package, making it ideal for space-constrained applications.

Applications:

The LTC4054LES5-4.2#TR is suitable for a wide range of portable devices where efficient charging is critical. This includes:

• Smartphones and PDAs
• Digital Cameras
• MP3 Players
• Portable Gaming Devices
• Bluetooth Headsets
• Wearable Technology

Reliability and Safety:

With safety as a priority, the LTC4054LES5-4.2#TR comes with multiple protection features, including over-temperature protection, under-voltage lockout, and automatic recharge. The device is also designed to meet regulatory standards, ensuring a reliable charging solution for consumer electronics.

In summary, the LTC4054LES5-4.2#TR from Linear Technology is an ideal choice for designers looking for a compact, versatile, and easy-to-use charging solution for lithium-ion batteries in portable electronic devices.