Microchip Technology MCP73871T-3CCI/ML

MCP73871T-3CCI/ML - Advanced Li-Ion Battery Charger IC

The MCP73871T-3CCI/ML from Microchip Technology is a highly integrated single-cell lithium-ion/lithium-polymer battery charge management controller designed for space-constrained, cost-sensitive applications. This advanced battery charger IC features a USB interface and delivers up to 1.1A of programmable constant charge current, making it ideal for portable electronics, IoT devices, and battery-powered applications.

Key Features & Benefits

• Single-Cell Li-Ion/Polymer Support: Optimized for 4.35V battery pack voltage with precise charge control
• High Charge Current: Programmable constant current up to 1.1A for faster charging cycles
• USB Interface: Direct USB connectivity for convenient charging from standard USB ports
• Comprehensive Protection: Built-in over-temperature fault protection ensures safe operation
• Programmable Timer: Customizable charging timer for enhanced battery safety and longevity
• Wide Operating Range: Functions reliably from -40°C to 85°C ambient temperature
• Compact Package: 20-VFQFN (4x4mm) surface mount package saves valuable PCB space
• Low Supply Voltage: Operates with supply voltages up to 6V maximum

Applications

The MCP73871T-3CCI/ML is perfectly suited for a wide range of battery-powered applications including:

• Portable consumer electronics and handheld devices
• Wireless sensors and IoT edge devices
• Wearable technology and fitness trackers
• Portable medical instruments
• Battery-powered industrial equipment
• USB-powered charging solutions

Design Considerations

When integrating the MCP73871T-3CCI/ML into your design, consider the following engineering best practices:

• Thermal Management: The exposed pad on the 20-QFN package provides excellent thermal dissipation. Ensure proper PCB layout with adequate ground plane connection for optimal heat transfer during high-current charging operations.
• Input Filtering: Implement appropriate input capacitance and filtering on the USB power input to ensure stable operation and compliance with USB specifications.
• Current Programming: Select the appropriate external resistor value to program the desired charge current based on your battery capacity and charging time requirements.
• Battery Selection: Verify battery compatibility with the 4.35V charge voltage specification. This IC is optimized for high-voltage Li-Ion cells and may not be suitable for standard 4.2V Li-Ion batteries.

Why Choose HQICKEY?

At HQICKEY, we specialize in providing authentic, high-quality semiconductor components with guaranteed lifecycle support. Our extensive inventory ensures fast delivery and competitive pricing for engineers and procurement professionals worldwide. Every component is sourced directly from authorized distributors and manufacturers, ensuring 100% authenticity and full traceability.

We understand the critical importance of reliable power management in embedded systems. Our technical team is available to assist with component selection, cross-reference alternatives, and lifecycle planning to ensure your designs remain manufacturable for years to come.

Related Products & Resources

Looking for more battery charging solutions? Explore our complete range of Battery Chargers including linear chargers, switching chargers, and multi-cell battery management ICs from leading manufacturers like Microchip, Texas Instruments, Analog Devices, and Maxim Integrated. Whether you need simple trickle chargers or sophisticated multi-chemistry charge controllers, we have the components to power your next design.

Stay informed about the latest semiconductor technologies, application notes, and industry insights by visiting our Technical Blog. Discover design tips, product comparisons, battery charging best practices, and expert guidance to help you make informed component selection decisions. Our blog features in-depth articles on power management trends, battery technology advancements, and practical design solutions for embedded systems engineers.

• MCP73871T-3CCI/ML.pdf