The MCP73871 device is a 1A 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’s also capable of autonomous power source selection between input or battery. The MCP73871 device employs a constant current/constant voltage (CC/CV) charge algorithm with selectable charge termination point. The constant voltage regulation is fixed with four available options: 4.10V, 4.20V, 4.35V, or 4.40V.
Additional Features
Integrated System Load Sharing and Battery Charge Management
Simultaneously Power the System and Charge the Li-Ion Battery
Integrated Pass Transistors
Integrated Current Sense
Integrated Reverse Discharge Protection
Selectable Input Power Sources: USB Port or AC-DC Wall Adapter
Preset High Accuracy Charge Voltage Options:4.10V, 4.20V, 4.35V or 4.40V
±0.5% Regulation Tolerance
Maximum 1.8A Total Input Current Control
Resistor Programmable Fast Charge Current Control: 50 mA to 1A
Resistor Programmable Termination Set Point
Selectable USB Input Current Control: Absolute Maximum: 100 mA (L) / 500 mA (H)
Automatic Recharge
Automatic End-of-Charge Control
Safety Timer With Timer Enable/Disable Control
0.1C Preconditioning for Deeply Depleted Cells
Battery Cell Temperature Monitor
Undervoltage Lockout (UVLO)
Low Battery Status Indicator (LBO)
Power-Good Status Indicator (PG)
Charge Status and Fault Condition Indicators
The MCP73871 device is a 1A 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’s also capable of autonomous power source selection between input or battery. The MCP73871 device employs a constant current/constant voltage (CC/CV) charge algorithm with selectable charge termination point. The constant voltage regulation is fixed with four available options: 4.10V, 4.20V, 4.35V, or 4.40V.
Additional Features
- Integrated System Load Sharing and Battery Charge Management
- Simultaneously Power the System and Charge the Li-Ion Battery
- Integrated Pass Transistors
- Integrated Current Sense
- Integrated Reverse Discharge Protection
- Selectable Input Power Sources: USB Port or AC-DC Wall Adapter
- Preset High Accuracy Charge Voltage Options:4.10V, 4.20V, 4.35V or 4.40V
- ±0.5% Regulation Tolerance
- Maximum 1.8A Total Input Current Control
- Resistor Programmable Fast Charge Current Control: 50 mA to 1A
- Resistor Programmable Termination Set Point
- Selectable USB Input Current Control: Absolute Maximum: 100 mA (L) / 500 mA (H)
- Automatic Recharge
- Automatic End-of-Charge Control
- Safety Timer With Timer Enable/Disable Control
- 0.1C Preconditioning for Deeply Depleted Cells
- Battery Cell Temperature Monitor
- Undervoltage Lockout (UVLO)
- Low Battery Status Indicator (LBO)
- Power-Good Status Indicator (PG)
- Charge Status and Fault Condition Indicators
