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SG3644M Datasheet(PDF) 7 Page - Microsemi Corporation |
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SG3644M Datasheet(HTML) 7 Page - Microsemi Corporation |
7 / 8 page 9/91 Rev 1.2 6/97 LINFINITY Microelectronics Inc. Copyright © 1997 11861 Western Avenue ∞ ∞ ∞ ∞ ∞ Garden Grove, CA 92841 7 (714) 898-8121 ∞ ∞ ∞ ∞ ∞ FAX: (714) 893-2570 SG1644/SG2644/SG3644 FIGURE 14. A low cost, yet powerful alternative to the single ended converters with parallel MOSFETs is a combination of SG1842 and SG1644 as shown in Figure 16. This combination will also allow a low noise operation by separating the drive and its associated high peak currents, away from the PWM logic section. FIGURE 15. Fast turn off of bipolar transistors is possible by the totem pose output stage of SG1644. The charge on capacitor C will drive the base negative for faster turn off. FIGURE 16. When the inputs are driven with a TTL square wave drive, the high peak current capabilites of SG1644 allow easy implem- entation of charge pump voltage converters. TYPICAL APPLICATIONS (continued) |
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