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| Document 682 Flyback Transformer For Microchip Technology's Isolated AC LED driver * Developed specifically for Microchip Technology's Isolated AC LED driver to operate with PIC16HV785 CMOS Microcontroller and MCP1402 Gate Driver * Universal ac input; 20 V, 0.7 A output; Operates at 125 kHz * 3000 Vrms isolation from the primary and bias to the secondary winding * Bias winding supplies 12 V to power the microprocessor Core material Ferrite Terminations RoHS tin-silver over tin over copper clad steel. Other terminations available at additional cost. Weight 11.7 g Ambient temperature -40C to +85C Storage temperature Component: -40C to +85C. Packaging: -40C to +80C Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 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 117 parts per tray PCB washing Only pure water or alcohol recommended Part number GA3172-AL Inductance Inductance DCR max (Ohms) Power at 0 A1 at Ipk2 (W) 10% (H) min (H) pri sec bias 14 500 450 0.675 0.245 0.325 Leakage Turns ratio inductance3 max (H) pri : sec pri : bias 8.25 1 : 0.214 1 : 0.131 Dot indicates pin 1 Ipk2 (A) Output4 0.78 20 V, 0.7 A 1. Inductance measured at 125 kHz, 0.1 Vrms, 0 Adc. 2. Peak primary current drawn at minimum input voltage. 3. Leakage inductance is for the primary and is measured with the secondary shorted. 4. Output is for the secondary. Bias winding output is 12 V. 5. Electrical specifications at 25C. Refer to Doc 362 "Soldering Surface Mount Components" before soldering. 0.935 23,74 2 Pri 1 5 Bias 4 10 Sec 6 0.400 10,16 0.561 14,25 5 6 0.118 min 3,00 0.020 0,50 Recommended PC Board Layout 0.150 typ 3,80 1 0.400 10,16 0.876 22,25 0.039 1,00 (10 x) Dimensions are in inches mm 1 10 Specifications subject to change without notice. Please check our website for latest information. Document 682 Revised 09/01/09 (c) Coilcraft, Inc. 2009 |
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