●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
