The MCP73831T-2DCI/MC from Microchip Technology is a highly integrated linear charge management controller designed for use in space-limited and cost-sensitive applications. This compact, single-cell, fully integrated Li-Ion and Li-Polymer charge management controller provides a reliable solution for charging batteries efficiently and safely.

Key Features

• Charge Regulation: The device offers constant-current/constant-voltage operation with thermal regulation to maximize charge rate without risk of overheating.
• Programmable Charge Current: Users can set the charge current from 15mA to 500mA by selecting the appropriate external resistor value.
• High Accuracy: Preset voltage regulation ensures accuracy within ±0.75%, maintaining the longevity and reliability of the battery.
• Charge Status Output: The MCP73831T-2DCI/MC provides a status output that can be used to indicate charge cycle completion or fault conditions.
• Automatic Power-Down: The controller automatically enters a low-current power-down mode when the charge cycle is complete, conserving energy and extending battery life.
• Thermal Protection: Built-in thermal protection shuts down the charge cycle if the temperature of the device becomes too high, protecting both the charger and the battery.

Applications

The MCP73831T-2DCI/MC is suitable for a wide range of portable applications, including:

• Personal care devices
• Wearable technology
• Bluetooth headsets
• Smartphones and tablets
• Portable medical devices
• Backup battery systems

Product Specifications

The device is offered in a tiny 5-lead SOT-23 package, making it ideal for portable applications where space is at a premium. It operates over a broad input voltage range and provides a comprehensive suite of protection features to ensure the safety and stability of the charging process.

Conclusion

Microchip Technology's MCP73831T-2DCI/MC is a sophisticated and reliable solution for designers seeking an efficient and compact charging controller. With its programmable charge current, high accuracy, and integrated safety features, it stands out as an excellent choice for modern battery-powered devices.