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Texas Instruments TPS629206QDRLRQ1 — Power Management (PMIC / Gate Driver)

TPS629206QDRLRQ1 Buck Regulator 600mA SOT-583 Automotive

MPNTPS629206QDRLRQ1
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Texas Instruments TPS629206QDRLRQ1, Automotive AEC-Q100, step-down buck regulator, adjustable output 0.4V to 5.5V, 600 mA, 3V to 17V input, SOT-583 package, -40°C to 150°C junction.

$1.6300Ref. price · indicative, final on quote
Texas Instruments TPS629206QDRLRQ1 datasheet (PDF)
PackagingSOT-583
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS629206QDRLRQ1 specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input17V
Voltage - output5.5V
Voltage - output (Min (Fixed))0.4V
Output current600mA
Frequency - switching1MHz, 2.5MHz
I/O channels1
Operating temperature-40°C ~ 150°C (TJ)
PackageTape & Reel (TR) Cut Tape (CT)
FunctionStep-Down
TopologyBuck
CaseSOT-583
Output configurationPositive
Synchronous rectifierYes

Product details

What this 600 mA buck does on your automotive rail

The TPS629206QDRLRQ1 is a synchronous step-down (buck) regulator from Texas Instruments, rated for 600 mA continuous output from a 3V to 17V input rail — covering 12V automotive battery with cold-crank dips and load-dump transients. Output is adjustable from 0.4V up to 5.5V via an external resistor divider, making it suitable for powering 1.8V, 3.3V, or 5V sensor/interface rails from the same BOM.

Switching frequency and inductor trade-off

The device can be set to either 1 MHz or 2.5 MHz switching frequency via a pin-strap resistor. At 2.5 MHz the inductor value drops below 1 µH, shrinking the total solution footprint to fit the SOT-583 package's 2.0 mm × 2.0 mm body. The 1 MHz setting improves efficiency by about 2-3% at 12V input, a worthwhile trade when the board has room for a 2.2 µH inductor.

Temperature grade and under-hood deployment

ROHS3 compliant and AEC-Q100 qualified — the Q1 suffix confirms automotive-grade release, which also means the part is manufactured on a dedicated automotive line with tighter process controls.

Frequently asked questions

Is TPS629206QDRLRQ1 a direct replacement for the base TPS629206?

Yes — the QDRLRQ1 suffix denotes the SOT-583 package and tape-and-reel format. The electrical specifications (3V to 17V input, 600 mA output, adjustable 0.4V to 5.5V, 1/2.5 MHz switching) are identical to the base TPS629206. The Q1 suffix adds AEC-Q100 automotive qualification.

What is the closest functional second-source to TPS629206QDRLRQ1?

The LMR33630APCQRNXRQ1 is also an automotive synchronous buck from TI, but it delivers 3 A output — five times the current — in a larger wettable-flank package. It is not a pin-compatible drop-in; the TPS629206 is the correct choice for 600 mA auxiliary rails where board space is tight.