BD99950MUV Series
2 Cell / 3 Cell Narrow VDC Charger with SMBus Interface
Manufacturer: Rohm Semiconductor
Catalog
2 Cell / 3 Cell Narrow VDC Charger with SMBus Interface
Key Features
• N-channel MOSFETs available for Battery orAdapter 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 ErP Lot6, Fast Load Current Transient Response underNo Battery or Dead Battery conditions, NMOS-NMOS Synchronous Step-Down Controller, Programmable 600kHz-1.2MHz Switching Frequency, Programmable Charge Voltage (16mV resolution),Charger Current (64mA resolution),Input Current (64mA resolution),Minimum System Voltage (64mV 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 Compensation, 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
Description
AI
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.
