LPD4012-683ML

Document 580-1 Coupled Inductors–LPD4012 For SEPIC and other Applications The LPD4012 coupled miniature shielded inductors are only 1,1 mm high and 4 mm square. Their excellent coupling coefficient (k ≥ 0.94) makes them ideal for use in SEPIC applications. In SEPIC topologies, the required inductance for each winding in a coupled inductor is half the value needed for two separate inductors, allowing selection of a part with lower DCR and higher current handling. These inductors provide high efficiency and excellent current handling in a rugged, low cost part. They can also be used as two single inductors connected in series or parallel, as a common mode choke or as a 1 : 1 transformer. 0.155 ±0.003 3,94 ±0,076 1 4 D1 Dot indicates pin 1 + L1 C1 VIN + + VOUT 2 XXX X Dash number 0.155 ±0.003 3,94 ±0,076 3 Q1 L2 C2 Load – – Internal code Typical SEPIC schematic Refer to Application Note, Document 639, “Selecting Coupled Inductors for SEPIC Applications” 0.0433 ±0.004 1,10 ±0,10 Recommended Land Pattern 1 4 0.103 0.049 2,606 1,24 0.031 0,78 45° typ 0.174 4,40 2 3 0.060 1,52 1 L1 2 L2 4 0.049 1,24 0.103 2,606 0.174 4,40 3 Dimensions are in inches mm Core material Ferrite Core and winding loss See www.coilcraft.com/coupledloss Weight 54 – 64 mg Terminations RoHS compliant silver-palladium-platinum-glass frit. Other terminations available at additional cost. Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current Storage temperature Component: –40°C to +125°C. Packaging: –40°C to +80°C Winding to winding isolation 100 V Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at