The MAX8844YETD from Maxim Integrated is a high-performance, single-cell, lithium-ion (Li+) battery charger designed to provide safe and efficient charging to portable devices. This integrated circuit (IC) is specifically tailored for space-constrained applications, making it an ideal choice for modern portable electronics such as smartphones, Bluetooth headsets, and wearable devices.

Key Features

• Input Voltage Range: The device operates with an input voltage range of 4.1V to 6.3V, accommodating a variety of USB and adapter power sources.
• Adjustable Charging Current: The MAX8844YETD allows for programmable fast-charge currents up to 1A, which enables quick battery charging while maintaining safety.
• Charge Termination: It includes an automatic charge termination feature based on minimum current, ensuring the battery is not overcharged, which helps extend battery life.
• Thermal Regulation: To protect against excessive heat, the IC incorporates a thermal regulation scheme that reduces charge current under high temperature conditions.
• High Accuracy: The MAX8844YETD boasts a ±0.75% charge voltage accuracy, which contributes to the safe and efficient charging of the battery.

Protection Features

• Overvoltage Protection: The device prevents damage to the battery from input overvoltage conditions.
• Battery Temperature Monitoring: An integrated battery temperature monitor ensures that the charging process is within the battery's safe temperature range.
• Prequalification Charging: The IC provides a prequalification charge state for deeply discharged batteries, ensuring a safe initial charge cycle.

Package and Temperature Range

The MAX8844YETD comes in a compact, thermally-efficient, 14-pin TDFN package with a specified operating temperature range of -40°C to +85°C, making it suitable for various environmental conditions.

Applications

Thanks to its compact size and comprehensive feature set, the MAX8844YETD is an excellent choice for a wide array of portable devices that require efficient and reliable battery charging solutions.