The MAX8844ZETD+ from Maxim Integrated is a highly efficient, compact, and versatile integrated circuit (IC) designed specifically for charging single-cell lithium-ion (Li+) batteries. This advanced power management IC offers a seamless solution for portable devices, ensuring safe and fast battery charging with minimal power loss.

Key Features

• Input Voltage Range: The device supports an input voltage range of 4.1V to 6.3V, making it suitable for USB and adapter powered applications.
• Charge Current: Programmable fast-charge current up to 1A allows for rapid charging of the battery, reducing downtime for the user.
• Prequalification Charging: A precharge mode conditions deeply discharged batteries before transitioning to fast charge mode.
• Thermal Regulation: Protects the IC and battery from overheating by automatically reducing charge current.
• Charge Status Indicators: The MAX8844ZETD+ includes charge status outputs to drive external LEDs, providing visual feedback on the charging process.

Applications

The compact nature and comprehensive feature set of the MAX8844ZETD+ make it ideal for a wide range of portable applications, including:

• Smartphones and tablets
• Bluetooth headsets
• Portable media players
• Digital cameras
• Handheld gaming devices
• Other Li+ battery-powered devices

Design and Integration

The MAX8844ZETD+ comes in a small, lead-free, 14-pin TDFN package with a 3mm x 3mm footprint, making it ideal for space-constrained applications. Its high level of integration reduces the need for external components, simplifying design and reducing overall system cost.

Safety and Protection

Safety is a paramount concern in battery charging, and the MAX8844ZETD+ incorporates multiple protection features to ensure device and user safety. These include overvoltage protection, thermal shutdown, and a battery temperature monitor that works in conjunction with an external thermistor.

For engineers and designers looking for a robust charging solution, the MAX8844ZETD+ provides a high-performance, reliable option that streamlines the development of battery-powered devices.