Document 488 SMT Planar Transformer For NSC LM5035 PWM Controller The DA2025-AL surface mount planar transformer is approved by National Semiconductor for use with its LM5035 PWM Controller with Integrated 105 V Half-Bridge and SyncFET Drivers. It is listed in AN-1435 LM5035 Evaluation Board Application Note. This transformer is designed for 100 Watt applications and can handle current up to 30 A. It features excellent DCR, very low leakage inductance and 1500 Vdc primary to secondary isolation. Coilcraft can also design custom planar transformers with different turns ratios and with an auxiliary winding to meet your specific requirements. For free evaluation samples, contact Coilcraft or visit www.coilcraft.com. Part number1 DA2025-AL_ Output power (W) 100 Output current (A rms) 30.0 Output voltage (V) 3.3 Primary inductance2 min (µH) 120.0 1. When ordering, please specify packaging code: 0.920 max 23,37 1 4 5 10 9 8 1 0.190 4,83 7 6 2 8 0.095 2,41 6 Pri 0.360 max 9,14 0.006 /0,15 0.250 6,35 5 Weight: Terminations: Tape and reel: 6 8T 10 2T 4 8 1 Aux 5T 4 Recommended Land Pattern 5 Sec 2T 10 0.110 Ø 2,79 12.5 g Matte tin over nickel over brass 200/13″ reel 44 mm tape width Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2007 Pri/sec isolation (Vdc) 1500 2 0.800 20,32 0.080 Ø 2,03 2 DCR max (mOhms) 50 (pri) 2 (sec) 250 (aux) 2. Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 200 kHz, 0.1 Vrms, 0 Adc. 3. Leakage inductance measured between pins 2 and 4 at 200 kHz, 0.1 Vrms, 0 Adc with secondary pins shorted. 4. Ambient operating temperature range: –40°C to +85°C. 5. Electrical specifications at 25°C. DA2025-ALD Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic tape (200 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. 0.810 max 3 20,57 Leakage inductance3 max (µH) 0.25 Document 488 Revised 02/07/06