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SI9100DN02-E3 Datasheet(PDF) 1 Page - Vishay Siliconix |
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SI9100DN02-E3 Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 8 page Si9100 Vishay Siliconix Document Number: 70000 S-42041—Rev. G, 15-Nov-04 www.vishay.com 1 3-W High-Voltage Switchmode Regulator FEATURES D 10- to 70-V Input Range D Current-Mode Control D On-Chip 150-V, 5-W MOSFET Switch D Reference Selection Si9100 − "1% D High Efficiency Operation (> 80%) D Internal Start-Up Circuit D Internal Oscillator (1 MHz) D SHUTDOWN and RESET DESCRIPTION The Si9100 high-voltage switchmode regulators are monolithic BiC/DMOS integrated circuits which contain most of the components necessary to implement high-efficiency dc-to-dc converters up to 3 watts. They can either be operated from a low-voltage dc supply, or directly from a 10- to 70-V unregulated dc power source. The Si9100 may be used with an appropriate transformer to implement most single-ended isolated power converter topologies (i.e., flyback and forward), or by using a level shift circuit can generate a +5-V or a −5-V non-isolated output from a −48-V source. The Si9100 is available in both standard and lead (Pb)-free 14-pin plastic DIP and 20-pin PLCC packages which are specified to operate over the industrial temperature range of −40_C to 85_C. FUNCTIONAL BLOCK DIAGRAM + − − + + − + − + − FB COMP DISCHARGE OSC 14 (20) 13 (18) 9 (12) 8 (11) 7 (10) 2 V Ref Gen R S Q R S Q DRAIN SOURCE 3 (5) 5 (8) 4 (7) 11 (16) 12 (17) Current-Mode Comparator C/L 1.2 V Undervoltage Comparator RESET 8.8 V 9.4 V BIAS Current Sources To Internal Circuits 10 (14) 1 (2) 6 (9) 2 (3) Comparator Error Amplifier VREF VCC +VIN VCC SHUTDOWN 4 V (1%) OSC OUT OSC IN Note: Figures in parenthesis represent pin numbers for 20-pin package. −VIN (BODY) Clock (1/2 OSC) Applications information, see AN702 and AN713. |
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