Automotive-grade single-cell Li-Ion charger with USB input
The Texas Instruments BQ24075QRGTRQ1 is a single-cell Li-Ion linear battery charger designed for automotive environments, qualified to AEC-Q100. It accepts USB input and delivers a programmable constant charge current up to 1.5 A max, with the battery regulation voltage fixed at 4.2 V.
Protection and programmability for robust designs
Integrated fault protection covers over-temperature, over-voltage, reverse-current, and short-circuit conditions — non-negotiable for a charger that must survive load dumps and battery disconnect events in a vehicle. Charge current and safety timer are programmable via external resistors, allowing the designer to match the charge profile to the cell capacity without firmware intervention. Maximum supply voltage is 6.4 V.
Lifecycle and sourcing
The Q1 suffix denotes AEC-Q100 automotive qualification.
