Linear Technology LTC4008EGN High Efficiency, Multi-Chemistry Battery Charger

The LTC4008EGN is a versatile and highly efficient battery charger IC designed by Linear Technology, now part of Analog Devices, to cater to a wide range of applications requiring reliable battery charging solutions. This advanced charger is capable of charging multi-chemistry batteries, including Lithium-Ion (Li-Ion), Lithium Polymer (Li-Poly), Lithium Phosphate (LiFePO4), and Nickel-based batteries, making it an ideal choice for portable devices, power tools, and backup energy systems.

Key Features

• Wide Input Voltage Range: The LTC4008EGN supports an input voltage range from 9V to 28V, accommodating various power supplies and ensuring compatibility with automotive and industrial voltage sources.
• High Charging Efficiency: With its high-efficiency synchronous buck converter design, this IC achieves up to 95% charging efficiency, reducing heat generation and improving system reliability.
• Adjustable Charge Current: Users can set the charge current up to 4A through an external resistor, providing flexibility to charge batteries of different capacities and optimizing charging times.
• Programmable Charge Voltage: The charge voltage is programmable up to 28.8V, accommodating various battery chemistries and configurations.
• Charge Current Monitoring: The IC includes a feature for precise charge current monitoring, which is essential for safe and accurate battery management.
• Multiple Safety Features: The LTC4008EGN integrates safety features such as input overvoltage protection, overtemperature protection, and battery temperature monitoring to ensure safe charging under all conditions.

Package and Availability

The LTC4008EGN is offered in a compact 24-pin SSOP package, which is suitable for space-constrained applications. Its robust design and comprehensive feature set make it a reliable choice for engineers and designers looking to incorporate a high-performance charging solution into their designs.

Applications

Due to its flexibility and high performance, the LTC4008EGN is well-suited for a variety of applications, including:

• Portable Electronics
• Electric and Hybrid Electric Vehicles
• Uninterruptible Power Supplies (UPS)
• Medical Devices
• Handheld Instruments

Overall, the LTC4008EGN from Linear Technology is a comprehensive charging solution that offers efficiency, versatility, and safety for a wide array of battery-powered applications.