Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller - Microchip Technology
Description
MCP73123/223
Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection
Features:
• Complete Linear Charge Management Controller: - Integrated Input Overvoltage Protection (OVP) - Integrated Pass Transistor - Integrated Current Sense - Integrated Reverse Discharge Protection
• Constant Current/Constant Voltage Operation with Thermal Regulation
• 4.
15V Undervoltage Lockout (UVLO) • 18V Absolute Maximum Input with OVP:
- 6.
5V - MCP73123 - 13V - MCP73223 • High Accuracy Preset Voltage Regulation Through Full Temperature Range (-5°C to +55°C): - +0.
5% - MCP73123 - +0.
6% - MCP73223 • Battery Charge Voltage Options: - 3.
6V - MCP73123 - 7.
2V - MCP73223 • Resistor Programmable Fast Charge Current: - 130 mA - 1100 mA • Preconditioning of Deeply Depleted Cells: - Available Options: 10% or Disable • Integrated Precondition Timer: - 32 Minutes or Disable • Automatic End-of-Charge Control: - Selectable Minimum Current Ratio:
5%, 7.
5%, 10% or 20% - Elapse Safety Timer: 4 HR, 6 HR, 8 HR or
Disable • Automatic Recharge:
- Available Options: 95% or Disable • Factory Preset Charge Status Output:
- On/Off or Flashing • Soft Start • Temperature Range: -40°C to +85°C • Packaging: DFN-10 (3 mm x 3 mm)
Applications:
• Low-Cost LiFePO4 Battery Chargers • Power Tools • Toys • Backup Energy Storage Solutions
Description:
The MCP73123/223 is a highly integrated Lithium Iron Phosphate (LiFePO4) battery charge management controller for use in space-limited and cost-sensitive applications.
The MCP73123/223 provides specific charge algorithms for LiFePO4 batteries to achieve optimal capacity and safety in the shortest charging time possible.
Along with its small physical size, the low number of external components makes the MCP73123/223 ideally suitable for various applications.
The absolute maximum voltage, up to 18V, allows the use of MCP73123/223 in harsh environments, such as low cost AC adapter or voltage spikes from plugging/unplugging.
The M...
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