LTC1732EMS-4.2#TR - Linear Technology

The LTC1732EMS-4.2#TR is a high-performance, constant-current/constant-voltage linear charger for single-cell lithium-ion batteries, meticulously designed by Linear Technology to cater to the ever-growing needs of portable electronic devices. This compact and efficient charging solution is specifically engineered to charge batteries to a final float voltage of 4.2V, which is the optimal charging voltage for most single-cell lithium-ion batteries used in a wide array of electronic gadgets.

Key Features

• Precision Charging: The LTC1732EMS-4.2#TR offers a precise end-of-charge control with ±0.8% voltage accuracy, ensuring the battery is charged to its maximum capacity without overcharging, thus enhancing the longevity of the battery.
• Programmable Charge Current: The charge current is programmable up to 1A with a single external resistor, providing flexibility to match the charging needs of various battery capacities.
• Automatic Recharge: It features an automatic recharge facility, which initiates a new charging cycle once the battery voltage falls below a preset threshold, keeping your device's battery topped up and ready to go.
• Charge Status Output: An onboard charge status output pin allows for easy monitoring of the charging process, which can be used to drive an LED indicator or interface with a microcontroller for more detailed battery management.
• Thermal Regulation: To safeguard against overheating, the LTC1732EMS-4.2#TR incorporates thermal regulation, which automatically reduces charge current in the event of excessive temperature rise.
• Low Dropout: The low dropout voltage enables charging at a lower input voltage, which is crucial for USB-powered and portable applications.
• Small Footprint: Housed in a compact 10-lead MSOP package, this charger IC saves valuable board space and is suitable for space-constrained applications.

Applications

The LTC1732EMS-4.2#TR is an ideal charging solution for a wide range of applications, including but not limited to:

• Portable Computers
• Cellular Telephones
• Personal Digital Assistants (PDAs)
• Digital Cameras
• MP3 Players
• Other Handheld Devices

With its combination of accuracy, programmability, and safety features, the LTC1732EMS-4.2#TR from Linear Technology stands out as a reliable and versatile choice for single-cell lithium-ion battery charging, ensuring your devices remain powered and ready for use.