Texas Instruments TPS62291DRVR, a synchronous step-down (buck) regulator, fixed 3.3 V output, 1 A continuous, 2.25 MHz switching frequency, in a 6-WSON (2x2 mm) package.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Surface Mount |
| Voltage - input | 2.3V |
| Voltage - output (Min (Fixed)) | 3.3V |
| Output current | 1A |
| Frequency - switching | 2.25MHz |
| I/O channels | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Down |
| Topology | Buck |
| Case | 6-WDFN Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
The TPS62291DRVR switches at 2.25 MHz, enabling a small inductor for a compact power stage. The fixed 3.3 V output at 1 A covers the common MCU, FPGA, or sensor rail without external feedback resistors, saving two components and a placement step.
The input range runs from 2.3 V to 6 V, so it handles a single Li-Ion cell (3.0 V–4.2 V) or a regulated 5 V bus without a pre-regulator — typical for portable and embedded systems.
Yes, the output is fixed at 3.3 V (min/fixed), so it delivers a regulated 3.3 V rail directly without external divider resistors.
Yes, 5 V is within the 2.3 V to 6 V input range, so it works directly off a 5 V bus.