Multi-chemistry charger with 28 V input ceiling
The Texas Instruments BQ24650RVAT is a multi-chemistry battery charger controller that handles Li-Ion, LiFePO4, and lead-acid chemistries from a single design. Its 28 V maximum supply voltage suits it for solar-panel-fed charge controllers, industrial battery backup systems, and portable equipment where the input rail can range from a regulated adapter to an unregulated panel output.
Programmable charge current and fault protection
Charge current is programmable via an external sense resistor, letting the designer match the charge rate to the battery capacity without swapping the IC. On-chip over-temperature and over-voltage protection guard against fault conditions during unattended charging — relevant for remote or outdoor installations where a runaway charge event could damage the battery or the load.
Industrial temperature grade and 16-VQFN package
The 16-VFQFN with exposed pad (3.5 mm × 3.5 mm body) provides a low thermal resistance path to the PCB copper plane — essential for dissipating the heat from the internal FETs during high-current charge cycles.