Photoflash Flyback Transformer ELECTRONICS INC. EPC3205G-X & EPC3205G-X-LF • Used as Flyback Transformer in High Voltage Photoflash Capacitor Charger • Designed for use with Linear Technology Chip • Add “-LF” after part number for Lead Free • Operating Temperature : -40°C to +85°C • UL 94V-0 Recognized Components • UL 1446 Class B Insulation System • Isolation : 500 Vrms Electrical Parameters @ 25° C PCA Part Number Voltage (Vdc) Chipset LT3468-1 LT3468 LT3468-2 LT3468 LT3468-2 LT3468-1 LT3420 LT3420 LT3420-1 EPC3205G-1(-LF) EPC3205G-2(-LF) EPC3205G-3(-LF) EPC3205G-4(-LF) EPC3205G-5(-LF) EPC3205G-6(-LF) EPC3205G-7(-LF) EPC3205G-8(-LF) Primary Peak Current (A Max.) V in V out 2.5-5.0 2.5-5.0 2.5-5.0 2.5-4.0 2.5-5.0 2.5-5.0 1.8-5.0 1.8-6.0 1.8-5.0 320 320 320 320 320 320 320 320 320 0.7 1.4 1.0 1.4 1.0 0.7 1.4 1.4 1.0 1 Leakage Inductance (µH Typ.) DCR (Ω Max.) Pri:Sec @ 100 KHz, 0.1 Vrms 20.0 12.3 12.3 10.0 10.0 15.0 25.0 24.0 15.0 @ 100 KHz, 0.1 Vrms Pri. Sec. .200 .130 .130 .200 .300 .300 .130 .080 .100 .300 .230 .230 .250 .300 .300 .160 .160 .230 25 21 21 25 33 33 18 18 18 4 T1 1:12 VBAT 1.8V-10V C1 4.7µF Sec. 3 T1 A/1 B/1 B/1 F/2 F/2 F/2 C/1 E/3 D/1 320V 5.6 8 3.4 1 D1 Flying Lead T2 Schematic 2 1 Package/ Schematic LT3420 320V Photoflash Capacitor Charging Circuit Pri. 2 Primary OCL @ 0Adc (µH ± 15%) 1:10.2 1:10.2 1:10.2 1:10.2 1:10.2 1:10.2 1:12 1:12 1:10.2 Schematic 1 T1 Turns Ratio 6 Pri. Sec. 2 4 VCC 2.5V-10V C2 4.7µF Schematic 3 5,6 2 3 6 4 VBAT RFB SW SEC 7 C4 + 220µF 330V Photoflash Capacitor LT3420 T1 8 Pri. Sec. 3,4 Charge 1 Done 9 RREF 1 Flash 8 CT 10 GND 5 C3 0.1µF Notes : EPC3205G-X EPC3205G-X-LF 1. Assembly Process (Solder Composition) SnPb Pb-Free 2. Peak Solder Rating 225°C 260°C 1 (Unlimited, ≤30°C/60%RH) 1 (Unlimited, ≤30°C/60%RH) Bold Lines Indicate High Current Paths (per IPC/JEDEC-J-STD-020C) 3. Moisture Sensitive Levels (MSL) (per IPC/JEDEC-J-STD-020C) 4. Weight 5. Packaging Information (Tube) TBD grams TBD grams TBD pcs / tube TBD pcs / tube Package Drawings Next Page Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSC3205G-X & -LFa Rev. 4 10/12/05 FT TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com Photoflash Flyback Transformer ELECTRONICS INC. EPC3205G-X & EPC3205G-X-LF Package A .350 (8.90) .350 (8.90) .098 Max. (2.50) .3.83 (9.72) 4 1 Pin 1 I.D. Marking : PCA 2 EPC3205G-2(-LF) D.C. .277 (7.04) 3 Recommended Layout .311 (7.90) .422 (10.72) 4 1 Pin 1 I.D. Marking : PCA 2 EPC3205G-1(-LF) D.C. Package B Recommended Layout .311 (7.90) .238 (6.04) 3 .138 Max. (3.50) Package C .350 (8.90) 1 Pin 1 I.D. Marking : PCA 2 EPC3205G-6(-LF) D.C. Package D Recommended Layout .311 (7.90) .422 (10.72) 4 .350 (8.90) 1 Pin 1 I.D. Marking : PCA 2 EPC3205G-8(-LF) D.C. .277 (7.04) 3 .205 Max. (5.20) Recommended Layout .383 (9.72) 4 .311 (7.90) .238 (6.04) 3 .193 Max. (4.90) Package E Package F .319 Typ. (8.10) Pin 1 I.D. 1 .401 Typ. (10.20) .490 .020 (10.90) 5 (.500) 1 8 .236 (6.00) 4 .146 (3.70) .026 (.650) .453 (11.50) .209 (5.30) .073 (1.85) .079 (2.00) Side Marking : .012 PCA EPC3205G-7(-LF) (.300) D.C. 0°-8° 4 Pin 1 I.D. .303 (7.70) .008 (.203) Pad Layout .358 (9.10) 3 Side Marking : PCA EPC3205G-X(-LF) D.C. .010 .187 0°-8° (.250) (4.75) .193 (4.90) .047 (1.20) .079 (2.00) .067 (1.70) .024 .209 (5.30) 6 (.600) .006 (.150) .342 (8.70) Pad Layout .059 (1.50) .063 (1.60) .073 (1.85) Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSC3205G-X & -LFb Rev. 4 10/12/05 FT TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com