AEC-Q100 qualification — what grade, exactly?
The BQ24031IRHLRQ1 is listed under the Automotive, AEC-Q100, bqTINY III series — that means it ships with the AEC-Q100 qualification documentation a PPAP-ready program requires. If your OEM auditor asks for the AEC-Q grade and temperature grade on the certificate, this part delivers.
1.5A charge current in a 3.5x4.5 mm QFN
Maximum charge current is 1.5 A, programmable via an external resistor — no digital interface needed, just a resistor to set the constant-current phase. The 20-VQFN package with exposed pad (3.5x4.5 mm body) handles the thermal dissipation at 1.5 A, but the layout needs a solid copper pour on the thermal pad to keep junction temperature in check. The battery pack voltage is fixed at 4.1 V, which suits certain Li-ion/polymer cells that terminate at 4.1 V rather than the more common 4.2 V — verify your cell's charge termination voltage before committing the BOM.
Fault protection and programmable features
Integrated fault protection covers over-temperature, reverse current, and short-circuit conditions — the charger shuts down without external monitoring circuitry. The programmable features are limited to current and timer; no battery temperature monitoring input or I2C control on this variant. The USB interface designation suggests the part can be configured for USB input current limiting, but the specific input voltage compliance details are not in this listing — confirm against the full datasheet for your input source.
Product status is listed as Active. That means Texas Instruments is still manufacturing the BQ24031IRHLRQ1 with no announced last-time-buy or discontinuation notice. For a production BOM, this part does not require an obsolescence contingency plan at this time.