MCP73871 Stand-Alone System Load Sharing and Li-Ion/Li-Polymer Battery Charge Management Controller
●Description
■The MCP73871 device is a fully integrated linear solution for system load sharing and Li-Ion/Li-Polymer battery charge management with AC-DC wall adapter and USB port power sources selection. It is also capable of autonomous power source selection between input and battery. Along with its small physicalsize, the low number of required external components makes the device ideally suited for portable applications.The MCP73871 device automatically obtains power for the system load from a single-cell Li-Ion battery or an input power source (AC-DC wall adapter or USB port).
■The MCP73871 device specifically adheres to the current drawn limits governed by the USB specification. With an AC-DC wall adapter providing power to the system, an external resistor sets the magnitude of 1A maximum charge current while supporting up to 1.8A total current for system load and battery charge current.
■The MCP73871 device employs a constant current/constant voltage (CC/CV) charge algorithm with selectable charge termination point. To accommodate new and emerging battery charging requirements, the constant voltage regulation is fixed with four available options: 4.10V, 4.20V, 4.35V or 4.40V. The MCP73871 device also limits the charge current based on the die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability.
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MCP73871 、 MCP73871T 、 MCP73871-1AAI/M 、 MCP73871-1CAI/ML 、 MCP73871-1CCI/ML 、 MCP73871-2AAI/ML 、 MCP73871-2CAI/ML 、 MCP73871-2CCI/ML 、 MCP73871-3CAI/ML 、 MCP73871-3CCI/ML |
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Stand-Alone System Load Sharing and Li-Ion/Li-Polymer Battery Charge Management Controller |
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Datasheet |
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Please see the document for details |
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QFN |
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English Chinese Chinese and English Japanese |
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10/25/17 |
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Revision D |
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DS20002090D |
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1.8 MB |
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