2.5 A single-cell Li-Ion charger with USB interface
The BQ24166RGET is a single-cell Lithium-Ion battery charger from Texas Instruments that accepts a USB input and delivers a programmable constant charge current up to 2.5 A max. The charger integrates over-temperature and short-circuit fault protection, reducing the need for external supervisory components on the power path. The 10 V maximum supply voltage gives enough headroom for a 5 V USB bus or a 9 V wall adapter without an external pre-regulator.
Active production — no end-of-life concern
For current BOM positions this means zero lifecycle risk — no need to qualify a second source or stockpile.
Package and supply rail compatibility
Surface-mount in a 24-VFQFN with exposed pad — the pad is the primary thermal path. The USB interface is the control bus. Single-cell operation means the battery pack voltage is 3.7 V nominal.
