LPR6235-123QML

Document 752-1 Miniature Step-Up / Flyback Transformers • Can be used as step-up or flyback transformers in DC-DC converters or as autotransformers • Perfect for low voltage step-up in energy harvesting applications These shielded parts are only 3.5 mm high and 6 mm square. The excellent coupling coefficient (k = 0.95) makes them ideal for use in a variety of applications, such as flyback converters and step-up pulse transformer applications. The high Isat and low DCR ratings of these low profile parts provide high efficiency and excellent current handling in a rugged, low cost design. Custom inductance values and turn ratios are available upon request. + D + L1 L2 C VOUT Part number1 LPR6235-253PML_ LPR6235-123QML_ LPR6235-752RML_ LPR6235-752SML_ Primary (L1) DCR max Turns inductance2 (Ohms) ratio ± 20% (µH) L1 L2 1 : 20 1 : 50 1 : 90 1 : 100 25 12.5 7.5 7.5 0.20 0.080 0.085 0.085 58 200 267 305 SRF typ3 Isat4 (MHz) (A) 580 382 257 244 0.7 0.9 1.6 1.6 VIN C PWM – – Typical Step-Up / Flyback Converter 1. When ordering, please specify packaging code: LPR6235-253PMLC Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape (350 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1500 parts per full reel). 2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. 3. SRF measured using an Agilent/HP 4191A or equivalent. 4. DC current applied to L1, at which the inductance drops 10% from its value without current. 5. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Core material Ferrite Weight 460 – 480 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