Описание
The MCP73830 is highly integrated, Li-Ion battery charge management controllers for use in spacelimited applications. The MCP73830 devices provide specific charge algorithms for single-cell Li-Ion/LiPolymer 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 MCP73830 ideally suitable for portable applications. The MCP73830L employs a constant current/constant voltage charge algorithm. The minimum 20 mA regulated constant, fast-charge current enables the design in small Li-Ion batteries and low-supply current applications. The fast-charge, constant current value is set with one external resistor from 20 mA to 200 mA. The MCP73830 allows up to 1000 mA charge current for applications that require faster constant current. The MCP73830 provides a thermal foldback function that limits the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability. The MCP73830 is fully specified over the ambient temperature range of -40°C to +85°C. The MCP73830 is available in a 6 lead, TDFN package.
- Complete Linear Charge Management Controller:
- Integrated Pass Transistor
- Integrated Current Sense
- Integrated Reverse Discharge Protection
- Constant Current/Constant Voltage Operation
- High Accuracy Preset Voltage Regulation:
- 4.20V + 0.75%
- Programmable Charge Current:
- MCP73830L: 20 mA – 200 mA
- MCP73830: 100 mA – 1000 mA
- Soft-start to avoid in-rush current
- Preconditioning:
- 10% and No Preconditioning
- Fixed Elapse Timer: 0 Hour or 4 Hours
- Fixed Preconditioning Timer: 1 Hour
- Automatic Recharge: No auto-recharge is also available with selected options
- Automatic End-of-Charge Control Termination:
- 7.5% and 10%
- Automatic Power-Down when Input Power Removed
- Undervoltage Lockout (UVLO)
- Chip/Charge Enable Pin (CE)
- Packaging:
- TDFN-6 (2×2 mm)
- Temperature Range: -40°C to +85°C
