Document 465 Planar Transformer For National Semiconductor LM5032 PWM Controller • Developed for the NSC LM5032 dual interleaved current mode PWM controller for applications up to 100 Watts. • Can be used in a dual forward converter or in both interleaved power stages of a high-current converter. • Low leakage inductance, excellent DCR • Interwinding isolation: 1500 Vdc. Core material Ferrite Terminations RoHS Matte tin over nickel over brass Weight 10.2 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. Tape and reel packaging: –40°C to +80°C 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 <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 200 per 13″ reel Plastic tape: 44 mm wide, 0.37 mm thick, 32 mm pocket spacing, 9.35 mm pocket depth PCB washing Only pure water or alcohol recommended Output Output Primary Leakage Part Output voltage current inductance2 inductance3 DCR max number1 power (W) nom (V) (A rms) min (µH) max (µH) (mOhms) C1539-AL_ 100 12 8.33 320.0 0.25 pri: 63.0 sec: 15.0 1. When ordering, please specify a packaging code: Packaging: C1539-ALD D = 13″ machine ready reel. EIA-481 embossed plastic tape (200 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. C1539-AL 4 5 XXXXY 20,57 0.920 max 23,37 7 2 10 9 8 7 6 Isolation (Vdc) 1500 2. Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 250 kHz, 0.1 Vrms, 0 Adc. 3. Leakage inductance measured between pins 2 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with pins7 and 9 shorted. 4. Storage and ambient operating temperature range: –40°C to +85°C. 5. Electrical specifications at 25°C. Dot indicates pin 1 1 2 0.810 max 3 Pri/sec Turns ratio pri : sec 2:1 Primary 0.820 20,83 2 9 4 7 Secondary 9 4 0.190 4,83 0.080 Ø 2,03 Recommended Land Pattern Parts manufactured prior to December 2011 may be marked differently. 0.360 max 9,14 0.006 /0,15 Dimensions are in inches mm Document 465 Revised 12/21/11