MCP73831T-2ACI/OT – Single Cell Li-Ion, Li-Polymer Battery Charging IC – SOT-23-5L – Microchip

The MCP73831T-2ACI/OT – Battery Charging IC is an advanced linear charge management controller designed for compact, cost-sensitive, and space-limited applications. This device provides optimized charging for single-cell Lithium-Ion (Li-Ion) and Lithium-Polymer (LiPo) batteries and is compliant with USB power bus specifications. With minimal external components, its compact design makes it ideal for portable and USB-powered applications. The MCP73831T is optimized for charging Lithium-Ion and Lithium-Polymer batteries in a wide range of portable electronics

Features:

• Integrated Pass Transistor and Current Sense: Reduces the need for additional components and simplifies the design.
• Reverse Discharge Protection: Prevents the battery from discharging through the device when the input voltage is disconnected.
• High-Accuracy Voltage Regulation: ±0.75% accuracy for consistent and safe battery charging.
• Regulated Output Voltage: 4.20V
• Programmable Charge Current: Adjustable charge current from 15 mA to 500 mA using an external resistor.
• Selectable Preconditioning Options: Choose 10%, 20%, 40% of the programmed current, or disable preconditioning entirely.
• End-of-Charge Control: Options to terminate charging at 5%, 7.5%, 10%, or 20% of the programmed current.
• Tri-State Output (MCP73831T) for efficient charge status signaling.
• Automatic Power-Down: Powers down the device when input voltage is removed.
• Thermal Regulation: Reduces charge current during high-power or high-temperature conditions to optimize charging time and reliability.
• Wide Operating Temperature Range: Supports -40°C to +85°C environments.