BQ24650RVAR

Description
The BQ24650 device is a highly integrated switchmode 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.
The BQ24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.  
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