The Microchip MCP73831-2ATI/MC is a highly integrated linear charge management controller suitable for use in space-limited and cost-sensitive applications. Designed by Microchip Technology, a leader in microcontroller and analog semiconductors, the MCP73831-2ATI/MC provides a simple and efficient solution for charging lithium-ion and lithium-polymer batteries.

Key Features

• Advanced Charge Management: The device offers constant current/constant voltage operation with thermal regulation to maximize charge rate without risk of overheating.
• Programmable Charge Current: It allows for selectable charge current from 15 mA to 500 mA, enabling the use with various battery sizes and desired charge times.
• High Accuracy: Features a precision voltage regulation of 4.2V (±0.5%) which is critical for the long-term performance of the battery.
• Charge Status Output: An on-chip status output pin (STAT) can be used to indicate the charge cycle progress via LED or interface with a microcontroller.
• Low Dropout Voltage: The low dropout voltage prolongs battery life by enabling the battery to be charged more fully.
• Automatic Power-Down: The device automatically enters a low current standby mode when the charge cycle is complete, conserving energy and extending battery life.
• Thermal Protection: Integrated thermal shutdown protection ensures safe operation under abnormal thermal conditions.

Applications

With its compact SOT-23-5 package, the MCP73831-2ATI/MC is ideal for portable electronics where efficient charging is essential. Common applications include:

• Smartphones and Tablets
• Wearable Devices
• Bluetooth Headsets
• GPS Devices
• Medical and Healthcare Devices
• Backup Batteries

Summary

The MCP73831-2ATI/MC from Microchip Technology is a compact, cost-effective, and highly efficient solution for managing the charging of Li-Ion and Li-Poly batteries. Its programmability, high accuracy, and integrated safety features make it an excellent choice for designers looking to incorporate reliable battery charging in their next project.