The LTC4053EMSE-4.2#PBF is a highly integrated battery charger and power management IC designed by Linear Technology, now part of Analog Devices. This advanced charger is specifically tailored for single-cell lithium-ion batteries, providing a complete charging solution with a constant-current/constant-voltage profile which is essential for maximizing battery life and safety.

Key Features

• Precision Charging: The LTC4053EMSE-4.2#PBF ensures accurate control of the charging process with a final float voltage accuracy of ±1%. The 4.2V final float voltage is perfectly suited for most single-cell lithium-ion batteries, ensuring they are charged efficiently and safely.
• Programmable Charge Current: Charge current can be programmed externally with a single resistor, giving designers flexibility to tailor the charging parameters to specific battery requirements and application needs.
• Thermal Regulation: To protect the battery and circuitry, the LTC4053EMSE-4.2#PBF incorporates thermal regulation, which automatically reduces charge current if the internal temperature of the chip exceeds a preset threshold.
• Automatic Recharge: The IC initiates a new charging cycle if the battery voltage falls below a certain threshold, ensuring the battery stays fully charged over time.
• Charge Status Output: A charge status output pin provides a simple interface to indicate whether the battery is currently being charged or if the charging process is complete.

Applications

The LTC4053EMSE-4.2#PBF is ideal for portable electronic devices where efficient charging and space-saving are crucial. It is commonly used in:

• Handheld Instruments
• Portable Medical Equipment
• Wireless Headsets and Wearable Devices
• Smartphones and PDAs
• GPS Devices

Package and Quality

This IC is available in a compact MSOP-10 package that is designed for space-constrained applications. It also features a lead-free finish and is RoHS compliant, meeting the requirements for environmentally conscious manufacturing. The LTC4053EMSE-4.2#PBF is manufactured to Linear Technology's high-quality standards, ensuring reliability and performance in demanding applications.