40V supply ceiling — the input headroom for 12V/24V banks
The BQ24450DWTR is a dedicated lead-acid battery charge controller from Texas Instruments, designed to manage constant-voltage and constant-current charging for sealed and flooded lead-acid cells. Its 40 V maximum supply voltage accommodates 12 V and 24 V battery banks with enough headroom for the rectified input from a wall adapter or alternator. The part operates over a -40°C to 70°C junction temperature range, which covers outdoor telecom cabinets, uninterruptible power supply (UPS) enclosures, and automotive auxiliary charger applications without requiring a separate thermal management component.
SOIC-16 footprint and supply rails
The wide-body SOIC-16 footprint is common for medium-power analog controllers and supports standard reflow profiles. The supply input is rated up to 40 V, so the designer should place a 40 V or higher-rated input capacitor close to the VCC pin.