BQ24650RVAR

The BQ24650RVAR from Texas Instruments is a highly integrated, standalone synchronous buck battery charge controller. It is designed to efficiently charge 1 to 6 series cells of various battery chemistries, including Lead Acid, Li-Ion/Li-Polymer, and Lithium Phosphate/LiFePO4. The device features integrated Maximum Power Point Tracking (MPPT) for solar power applications, allowing it to optimize power extraction from solar panels with input voltages ranging from 5V to 28V.

Key electrical specifications include a maximum charge current of 10A, a battery charge voltage range of 2.1V to 26V, and an input voltage range of 5V to 28V, with an absolute maximum of 33V. The controller operates with a switching frequency of 600kHz and offers precise charge voltage and current regulation accuracies of ±0.5% and ±3% respectively. It also includes features like Input OVP (Overvoltage Protection) and BAT temperature thermistor monitoring for robust battery management.

Packaged in a compact 16-VQFN (3.5x3.5 mm) with a surface mount type, the BQ24650RVAR is suitable for space-constrained designs. It operates across a wide temperature range of -40°C to 85°C. The device provides charge status outputs and supports automatic sleep mode for low power consumption, making it an ideal solution for solar-powered battery charging systems and other power management applications requiring efficient and reliable battery charging.