18. Buck Converter Inductor Selection

✅ Inductance: 22µH matches the required 22µH.

✅ Inductance tolerance: ±20% matches the required ±20% or tighter.

✅ Current rating: 3.8A exceeds the required minimum of 3A.

✅ Saturation current: 3.8A exceeds the required minimum of 3.5A, providing the needed saturation margin.

✅ DC resistance: 42mΩ max is well below the 120mΩ maximum, supporting lower conduction loss and better efficiency.

✅ Type: Shielded and wirewound, matching the required shielded wirewound construction.

✅ Mounting type: Surface Mount matches the requirement.

✅ Operating temperature: -40°C to +130°C meets and exceeds the required -40°C to +125°C range.

✅ RoHS compliance: ROHS3 Compliant, satisfying the requirement.

All required specifications are satisfied. This component is approved for the buck converter inductor selection task.