Maxim Integrated MAX1811ESA+T USB-Powered Li+ Battery Charger

The MAX1811ESA+T from Maxim Integrated is a compact and efficient solution for charging single-cell lithium-ion (Li+) batteries. Designed specifically for USB-powered applications, this integrated circuit simplifies the process of charging batteries from both USB and AC adapter sources. Its small size and straightforward functionality make it an excellent choice for portable electronic devices where space is at a premium and ease of use is essential.

Key Features

• USB Power Compliance: The MAX1811ESA+T adheres to USB power specifications, ensuring compatibility with USB 2.0 and 3.0 power capabilities. It can charge a Li+ battery with a current of up to 500mA from a USB port, and up to 1A when using an external AC adapter.
• Adjustable Charge Voltage: This charging IC allows for an adjustable charge voltage set with an external resistor, providing flexibility for different battery chemistries and capacities.
• Thermal Regulation: To protect the battery and circuitry, the MAX1811ESA+T features thermal regulation that reduces charge current during high temperature conditions.
• Charge Status Indicators: It includes charge status outputs that can drive LEDs directly, giving clear indications of the charging process and completion.
• Automatic Charging Cycle: The device automatically initiates a new charge cycle when the battery voltage drops below a certain threshold, ensuring the battery remains fully charged.

Applications

The MAX1811ESA+T is ideal for a variety of applications, including:

• Portable consumer electronics such as MP3 players, portable media players, and e-book readers
• Handheld devices like smartphones, tablets, and GPS units
• Bluetooth headsets and wearable technology
• Backup battery chargers and small-scale energy storage systems

With its ease of integration and robust feature set, the MAX1811ESA+T is a versatile charging solution that addresses the needs of modern rechargeable battery applications. Its compact SO-8 package makes it suitable for space-constrained designs, while its comprehensive protection features ensure safe and reliable operation for the end-user's peace of mind.

Whether for personal electronics, wearable devices, or other portable applications, the MAX1811ESA+T provides a reliable and user-friendly charging solution, backed by the quality and expertise of Maxim Integrated.