300 mA synchronous buck in a 2x2 WSON
It integrates the switching MOSFETs with synchronous rectification, which eliminates the external Schottky diode and keeps efficiency above 90 % at moderate loads.
2.0 V to 6.0 V input, 1.8 V fixed output
Input range spans from 2.0 V minimum to 6.0 V maximum, covering single-cell Li-ion, 3.3 V, or 5.0 V rails. The output is fixed at 1.8 V — no external feedback divider needed. The positive output configuration and single-channel architecture suit point-of-load regulation for low-voltage digital cores or I/O banks.
6-WSON exposed-pad thermal management
The 6-WDFN with exposed pad (6-WSON 2x2 mm) is a surface-mount package that relies on the PCB copper plane under the pad for heat sinking.
No second-source or successor part is documented for this exact fixed-output variant.