Automotive-grade 600 mA buck in a 2x2 WSON
The Texas Instruments TPS62260QDRVRQ1 is a synchronous step-down buck converter qualified to AEC-Q100, designed for automotive power rails that need a compact, high-frequency regulator. It delivers up to 600 mA from a 2 V to 6 V input range, with an adjustable output down to 0.6 V. The 2.25 MHz switching frequency lets the designer use small inductors and ceramic capacitors, shrinking the total solution footprint for space-limited ECU, sensor, and infotainment modules.
2.25 MHz switching — inductor and capacitor sizing
At 2.25 MHz, the inductor value typically falls in the 1 µH to 4.7 µH range, depending on the input-to-output voltage ratio and load current. The high frequency also keeps the output ripple within spec with a single 10 µF ceramic output capacitor, avoiding the need for bulk electrolytics. The synchronous rectifier eliminates the external Schottky diode, saving one component and improving efficiency at light load — relevant for always-on automotive modules that spend most of their time in standby.
The 6-WSON (2x2) package with exposed pad is a common footprint across the TPS6226x family, which simplifies second-sourcing within the same series if a different output current or fixed-voltage variant is needed later.
Temperature range and automotive qualification
The AEC-Q100 qualification means the part has passed the stress tests (HTOL, TC, HAST, ESD) required for Tier-1 automotive programs.