Sizing the inductor for 2 MHz switching
The TPS622319DRYT is a fixed-output 1.2 V step-down converter that switches at 2 MHz, allowing the use of a small 1 µH to 2.2 µH inductor. At 500 mA output, the ripple current stays within 30% of the load, keeping the output capacitor count to a single 10 µF ceramic.
Input voltage range and rail compatibility
The input range spans 2.05 V to 6 V, covering single-cell Li-Ion (3.0 V–4.2 V), 3.3 V, and 5 V rails. The 2.05 V minimum means it can run from a nearly discharged Li-Ion cell, though the dropout at low input voltage will limit the available output current.
Sourced per RFQ against BOM quantities.