Product Overview: LTC4001EUF#PBF

The LTC4001EUF#PBF from Linear Technology is a high-performance, standalone linear charger for single-cell lithium-ion batteries. This advanced charging solution is designed to offer efficient operation, precision charging, and a host of safety features to ensure the longevity and reliability of the battery being charged.

Key Features

• Adjustable Charge Current: The LTC4001EUF#PBF allows users to set the charge current up to 4A through a single external resistor, providing flexibility for various battery capacities and thermal management requirements.
• Wide Input Voltage Range: Capable of operating with input voltages from 4.5V to 5.5V, it is suitable for a range of power supplies, including USB ports and wall adapters.
• High Efficiency: Its linear charging method offers high efficiency, which is critical for fast charging and reducing heat generation.
• Charge Termination: The LTC4001EUF#PBF features automatic termination upon charge completion, signaled by the charge status output, to prevent overcharging and extend battery life.
• Thermal Regulation: To protect the battery and the charger during high power or high ambient temperature conditions, the device includes thermal regulation circuitry that reduces the charge current.

Protection and Safety

• Battery Overvoltage Protection: The charger has built-in overvoltage protection to prevent the battery voltage from exceeding a safe threshold.
• Automatic Recharge: The LTC4001EUF#PBF initiates a new charge cycle if the battery voltage falls below a preset level, ensuring the battery remains fully charged.
• Low Battery Preconditioning: For deeply discharged batteries, the device starts with a preconditioning charge at a lower current to safely bring the battery voltage up to an acceptable level before applying the full charge current.

Applications

The LTC4001EUF#PBF is ideal for portable electronic devices that require efficient, high-speed charging with minimal heat generation. It is commonly used in smartphones, tablets, digital cameras, and other USB-powered or battery-operated devices.

Package and Quality

Encased in a 24-lead QFN package, the LTC4001EUF#PBF offers a compact footprint for space-constrained applications. Linear Technology ensures high-quality standards, providing a reliable charging solution for manufacturers and end-users alike.