Single-cell Li-Ion charger with USB input and integrated protection
The BQ24079TRGTT: It delivers a programmable constant charge current up to 1.5 A, with the charge voltage set to 4.1 V for the battery pack. The IC integrates a full set of fault protections: over-temperature, over-voltage, reverse current, and short circuit — covering the common failure modes in a single-cell charging path without external supervisory components.
Supply range, thermal envelope, and package fit
Maximum supply voltage is 6.4 V, which accommodates standard 5 V USB bus voltage plus margin for transients. The small footprint suits space-constrained handheld designs.