Divide by 2 Charge Pump for high efficiency single cell battery charging
The SMB1390 is a single-input, programmable single-cell Lithium-ion/Lithium-polymer battery charger. SMB1390 is a divide-by-two charge pump, providing the highest efficiency for charging high-capacity cells, up to 6 A fast charge capability per SMB1390. The device provides +28 V DC withstand, wide operating input range of 3.6 to 12 V, and allows for the elimination of inductors common to buck regulator solutions.
Features
- +2.5 V to +5 V operating output voltage range (input voltage = 2 × output voltage + delta)
- +28 V withstand input voltage with 2.5 V on the output
- +28 V withstand input voltage with 2.5 V on the output
- +28 V withstand input voltage with 2.5 V on the output
- Up to 6 A output current per device, expandable with dual implementation
- Fully integrated, low RDSON FETs switching
- Dual charging (two SMB1390s charging) operation with clock sync to reduce overall current ripple
- Comprehensive Protection features
