BQ24650RVAR
同步开关模式电池充电控制器用于太阳能电源的最大功率点跟踪 Synchronous Switch-Mode Battery Charge Controller for Solar Power With Maximum Power Point Tracking
Description
The bq24650 device is a highly integrated switch mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.
Features
• Maximum Power Point Tracking MPPT Capability by Input Voltage Regulation
• Programmable MPPT Setting
• 5-V to 28-V Input Solar Panel
• 600-kHz NMOS-NMOS Synchronous Buck Controller
• Resistor Programmable Float Voltage
• Accommodates Li-Ion/Polymer, LiFePO4, Lead Acid Chemistries
• Accuracy
– ±0.5% Charge Voltage Regulation
– ±3% Charge Current Regulation
– ±0.6% Input Voltage Regulation
• High Integration
– Internal Loop Compensation
– Internal Digital Soft Start
• Safety
– Input Overvoltage Protection
– Battery Temperature-Sensing
– Battery Absent Detection
– Thermal Shutdown
• Charge Status Outputs for LED or Host Processor
• Charge Enable on MPPSET Pin
• Automatic Sleep Mode for Low Power Consumption
– < 15-μA OFF-State Battery Discharge Current
• Small 3.5 × 3.5 mm2 16-Pin QFN Package
Applications
• Solar-Powered Applications
• Remote Monitoring Stations
• Portable Handheld Instruments
• 12-V to 24-V Automotive Systems
• Current-Limited Power Source