Monolithic Power Systems (MPS) MP2658 36V Switching Charger
Monolithic Power Systems (MPS) MP2658 36V Switching Charger is a highly integrated switching charger intended for portable devices with different battery chemistries. The MP2658 supports up to 7-cell series Li-ion, Li-polymer, and LiFePO4 battery packs. It also supports lead-acid, super capacitor, NiMH, and NiCd battery packs from 2V to 31V. The device achieves up to 3A charge current (ICC) with any battery regulation voltage (VBATT_REG). The MP2658 operates under a maximum 36VDC input voltage and hold-off voltage up to 45V. When an input power supply is present, the MP2658 generally charges the battery with four phases: trickle charge, pre-charge, constant-current charge, and constant-voltage charge.
The Monolithic Power Systems (MPS) MP2658 can be configured to different pre-charge to fast charge thresholds and charge termination modes via the external pins. This feature allows the device to support supercapacitor charging and other types of battery charging. Power management is based on the input voltage (VIN) and input current (IIN). Suppose the IIN exceeds the preset IIN limit or the VIN drops to the preset VIN limit. In that case, the MP2658 automatically decreases the charge current to protect the input power supply from overload conditions.
To guarantee safe operation, the MP2658 offers robust protection features such as battery over-voltage protection (OVP), battery temperature sensing/protection, thermal shutdown, and a charging safety timer. The MP2658 is available in a QFN-19 (3mm x 3mm) package.
Features
- Up to 36V operating input voltage (VIN)
- 45V max sustainable voltage when not switching
- Up to 3A of charge current (ICC)
- Supports any battery regulation voltage (VBATT_REG) from 2V to 31V
- 0.5% VBATT_REG accuracy
- Integrated Input Current (IIN) sensing and reverse blocking FET
- Internal loop compensation
- IIN limit regulation
- Minimum VIN regulation
- Charge operation indicator
- Dead battery pack recovery
- Battery Over-Voltage Protection (OVP)
- Charge safety timer
- Battery Negative Temperature Coefficient (NTC) thermal monitor
- Available in a QFN-19 (3mm x 3mm) package
Applications
- Industrial medical equipment
- Power tools
- Robots and portable vacuum cleaners
- Wireless speakers
- Walkie talkies
- Surveillance systems
Typical Application
Development Tool
Monolithic Power Systems (MPS) EV2658-Q-00A Charger Evaluation Board
Demonstrates the capabilities of the MP2658, a highly integrated switching charger.