BD99950MUV
BD99950MUV is VDC Charger manufactured by ROHM.
2 Cell / 3 Cell Narrow VDC Charger with
SMBus Interface
General Description The BD99950MUV is a high-efficiency, synchronous Narrow VDC system voltage regulator and battery charger controller. It has two charge pumps which separately drive N-channel MOSFETs for automatic system power source selection. Charge voltage, charge current, AC adapter current and minimum system voltage can be programmed through SMBus. With a small inductor, PWM switching frequency can also be programmed by SMBus up to 1.2MHz.
Features
- N-channel MOSFETs available for Battery or Adapter Selection via Internal Charge Pumps
- Fast DPM Transient Response under Turbo Mode(<100μs)
- Linear Mode Trickle Charge via BGATE Charge Pump
- Low Operating Current BGATE Charge Pump at 17µA(typical)
- MLCC Output Capacitor
- High Light Load Efficiency for Energy Star and Er P Lot6
- Fast Load Current Transient Response under No Battery or Dead Battery conditions
- NMOS-NMOS Synchronous Step-Down Controller
- Programmable 600k Hz-1.2MHz Switching Frequency
- Programmable Charge Voltage (16m V resolution), Charger Current (64m A resolution), Input Current (64m A resolution), Minimum System Voltage (64m V resolution)
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Input Current Accuracy
- ±0.5% Minimum System Voltage Accuracy
- ±2% 20x Input Current Amplifier Output Accuracy
- Integrated Loop pensation
- Battery Learn Function
- AC Adapter Operating Range: 6.0V to 24.0V
- Off-State Battery Discharge Current at 15μA
- 20pin 3.5mm×3.5mm QFN Package
Applications
- Ultrabook, Notebook PC, Ultra-mobile PC, Tablet PC
Key Specifications
- Input Voltage Range:
6.0V to 24.0V
- Output Voltage...
