Fixed 1.8V rail for portable and embedded loads
The Texas Instruments TPS62202DBVTG4 is a synchronous step-down (buck) converter that delivers a fixed 1.8V output at up to 300 mA from an input range of 2.5V to 6V. It switches at 1 MHz, which keeps the external inductor and capacitors small — useful in space-constrained designs like battery-powered IoT nodes, sensor modules, or auxiliary rails on a mixed-voltage board.
300 mA output — what it powers
The 300 mA current rating sets the load budget. It is enough for a low-power MCU, a Bluetooth module, a few op-amps, or a small FPGA core rail — but not for a radio PA or a bank of relays. If your BOM line needs to supply a 1.8V rail at 300 mA or less, this part fits without headroom for a larger load.
The SOT-23-5 (SC-74A) package has five leads with 0.95 mm pitch — easy to probe with a multimeter tip and straightforward to rework with a fine-tip iron. No hot-air station required, which is exactly what you want when you are swapping a regulator on a board that is already in the enclosure.