Customizable TPS92611 Series LED Driver ICs - Wide Operating Temperature -40°C to 125°C

We’ve been sourcing the TPS92611QDGNRQ1 for our automotive lighting lines for about two years now, and it’s basically the go-to for our low-side LED drivers — the 300mA per channel is plenty for taillight clusters and interior accent strips, though we don’t push it past 40V on the output side, and the -40°C to 125°C temp range has held up in our under-hood test runs without a hiccup.

it come in an 8-TSSOP with exposed pad, which helps with thermal management when you’re running it near the limit, and the 8-MSOP option is also availble if your pick-and-place prefers that footprint — we usually go with the TSSOP for better heat dissipation, but either works (lead time is typically 6-8 weeks on the reel packaing, so plan ahead).

The AEC-Q100 certification is the real reason we spec it for harsh environments, but honestly, it’s also fine for industrial LED panels if you don’t need the full automotive qualification — we’ve used it in a few test fixtures with no issues, though it’s overkill for simple desk lamps.

One thing we noticed early on is that the output current is stable across the full temp range, which is rare at this price point — we’ve seen cheaper drivers drift by 5-10% when things get hot, but this one stays within a couple percent, and the COAs we get form TI are consistent batch to batch (usually 99% purity on the silicon, give or take).

Most buyers we talk to order the 300mA version, but there are lower-current variants if your design is more about efficieny than raw output — we stock the 300mA for our main line and keep a few reels of the 150mA for lower-power projects, though the base part number is the same across the family.

Anyway, the exposed pad does require a proper solder paste stencil and good reflow profile — we had one batch where the pad wasn’t fully wetted, and the thermal performence dropped noticeably, so pay attention to that detail during assembly.