The BQ24650RVAT is a synchronous switch-mode integrated Battery-charge Controller for solar power with maximum power point tracking 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. The charge controller charges the battery in three phases such as pre-conditioning, constant current and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge timer is fixed at 30 minutes. The charge controller automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.
● Maximum Power Point Tracking (MPPT) capability by input voltage regulation
● Programmable MPPT setting
● Resistor programmable float voltage
● ±0.5% Charge-voltage regulation
● ±3% Charge-current regulation
● ±0.6% Input voltage regulation
● Internal loop compensation
● Internal digital soft start
● Input over-voltage 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
● <15µA Off-state battery discharge current
● Green product and no Sb/Br
●This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
