Texas Instruments LM51231QRGRRQ1, Automotive Grade, Synchronous Boost Controller, 1 Output, Transistor Driver, 100kHz ~ 2.2MHz, 0.8V ~ 42V Supply, -40°C ~ 125°C, 20-VQFN (3.5x3.5) Wettable Flank.
| Parameter | Value |
|---|---|
| Output type | Transistor Driver |
| Mounting | Surface Mount, Wettable Flank |
| Voltage - supply (Vcc (Vdd)) | 0.8V ~ 42V |
| Frequency - switching | 100kHz ~ 2.2MHz |
| I/O channels | 1 |
| Output phases | 1 |
| Duty cycle | 98% |
| Operating temperature | -40°C ~ 125°C (TA) |
| Grade | Automotive |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Up |
| Topology | Boost |
| Clock sync | Yes |
| Qualification | AEC-Q100 |
| Case | 20-VFQFN Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
The part is ROHS3 compliant.
The LM5150QURUMRQ1 is a non-synchronous boost controller also AEC-Q100 qualified, but its 87% duty-cycle ceiling and lack of synchronous rectification mean it trades efficiency for a 150°C junction rating. The LM51231QRGRRQ1 wins where thermal budget is tight and the ambient stays within 125°C; the LM5150 extends the temperature headroom for exhaust-adjacent or turbocharger-adjacent placements.
Yes. The part is ROHS3 compliant per the manufacturer's classification.
The LM5150QURUMRQ1 is a non-synchronous boost controller from TI with the same AEC-Q100 qualification and a wider 150°C junction rating, but it lacks synchronous rectification and has a lower 87% duty cycle. It is a functional alternative if the efficiency and duty-cycle trade-off is acceptable, not a pin-compatible drop-in.
It is a synchronous boost controller with one output, switching from 100kHz to 2.2MHz, operating from -40°C to 125°C ambient. The supply range is 0.8V to 42V, and the maximum duty cycle is 98%.