MCP73831T-2ATI/OT

The MCP73831T-2ATI/OT is a highly integrated lithium-ion (Li-ion) and lithium-polymer (LiPo) battery charger IC from Microchip Technology. This device is designed for space-constrained applications, providing a compact solution for charging single-cell batteries. Below is a detailed description of its features, specifications, and applications:

Key Features:

1. Charging Capability: The MCP73831T-2ATI/OT is capable of charging Li-ion and LiPo batteries with a maximum charge current of up to 500 mA. It employs a constant current/constant voltage (CC/CV) charging algorithm, ensuring efficient and safe charging.

2. Input Voltage Range: The device operates with an input voltage range of 4.5V to 6.0V, making it compatible with various power sources, including USB ports and wall adapters.

3. Thermal Regulation: The charger includes thermal regulation features that reduce the charge current if the die temperature exceeds a certain threshold, preventing overheating and ensuring safe operation.

4. Status Indication: The MCP73831T-2ATI/OT provides status indication through dedicated pins. It features a charge status output (CHRG) that indicates whether the battery is charging or fully charged, allowing for easy monitoring of the charging process.

5. Integrated Protection Features: The device includes built-in protection features such as overvoltage protection, undervoltage lockout, and reverse current protection, enhancing the safety and reliability of the charging process.

6. Small Package Size: The MCP73831T-2ATI/OT is available in a compact 8-pin MSOP (Micro Small Outline Package) or 8-pin DFN (Dual Flat No-lead) package, making it suitable for space-constrained applications.

7. Programmable Charge Current: The charge current can be set using an external resistor, allowing designers to customize the charging rate according to their specific application requirements.

8. Low Quiescent Current: The device features a low quiescent current, which is beneficial for battery-powered applications, as it helps to extend battery life during idle periods.

Applications:

The MCP73831T-2ATI/OT is ideal for a variety of applications, including:

• Portable consumer electronics (smartphones, tablets, wearables)
• Battery-powered devices (remote controls, wireless sensors)
• Medical devices (portable diagnostic equipment)
• IoT devices (smart home products, connected wearables)
• Any application requiring efficient and compact battery charging solutions.

Conclusion:

The MCP73831T-2ATI/OT from Microchip Technology is a versatile and efficient battery charger IC that combines a range of features to support the charging of lithium-ion and lithium-polymer batteries. Its compact size, integrated protection mechanisms, and customizable charge current make it an excellent choice for modern electronic devices that require reliable and safe battery management.