LTC1731EMS8-4.2#PBF - Linear Technology

The LTC1731EMS8-4.2#PBF is a highly integrated charging solution from Linear Technology, designed for single-cell lithium-ion batteries. This advanced charge management IC is perfect for portable applications where efficient charging and space constraints are critical considerations. The device is housed in a compact MSOP-8 package, making it an excellent choice for space-limited applications.

Key Features:

• Precision Charging: The LTC1731EMS8-4.2#PBF offers precise end-of-charge control with a 4.2V float voltage, ensuring the lithium-ion battery is charged accurately for maximum capacity and longevity.
• Programmable Charge Current: Users can set the charge current from 50mA to 1A via a single external resistor, providing flexibility for different battery capacities and thermal management requirements.
• Automatic Recharge: The device includes an automatic recharge feature that initiates a new charge cycle if the battery voltage falls below a preset threshold, keeping the battery topped up.
• Charge Status Output: A charge status output pin (CHRG) allows for a simple LED interface to indicate the charging progress, enhancing user experience by providing visual feedback.
• Thermal Regulation: To protect the battery and circuitry, the LTC1731EMS8-4.2#PBF incorporates thermal regulation that reduces charge current during high temperature conditions.
• C/10 Charge Termination: The IC terminates charging when the charge current falls to one-tenth of the programmed value, ensuring the battery is not overcharged.
• Safety Features: Built-in safety features include automatic shutdown in case of overvoltage, undervoltage lockout, and thermal shutdown to prevent damage under abnormal conditions.

Applications:

The LTC1731EMS8-4.2#PBF is suitable for a wide range of applications where single-cell lithium-ion battery management is required. This includes handheld devices, medical equipment, portable instruments, and any other battery-powered devices that need reliable and efficient charging solutions.

Overall, the LTC1731EMS8-4.2#PBF from Linear Technology offers a compact, feature-rich charging solution that ensures safe and efficient management of single-cell lithium-ion batteries.