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LS7637FO Datasheet(PDF) 5 Page - LSI Computer Systems |
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LS7637FO Datasheet(HTML) 5 Page - LSI Computer Systems |
5 / 7 page 7636-041709-5 C1 = 100uF R6 = 150kΩ D4 = 1N4004 C2 = 0.0047uF R6 = 270kΩ D5 = 1N4004 C3 = 0.047uF R7 = 47kΩ Q1 = MJE340 (or equivalent) C4 = 0.1uF R7 = 91kΩ Q2 = Liteon LTV354T (or equivalent) R1 = 150kΩ R8 = 47kΩ Q3 = IRF630 (Typical) R1 = 270kΩ, 1/2W R8 = 91kΩ Q3 = IRF730 (Typical) R2 = 390Ω R9 = 0.25Ω, 1W ( For 1 Amp RMS Max) Q4 = IRF630 (Typical) R3 = 39kΩ R10 = 4.3kΩ, 1/2W Q4 = IRF730 (Typical) R4 = 1.5MΩ D1 = 12V, 1/2W, 5% R5 = 10kΩ D2 = 5.6V, 1/4W, 10% All Resistors 1/4W, All Capacitors 25V unless otherwise specified D3 = 1N4004 * = Component change for 220VAC * * * FIGURE 4. Reverse Phase Dimmer (Option 1) * * * V DD MODE TEST SYNC GATE VSS OVC SENS/ SENSE SWITCH 3 4 2 1 Q2 R3 + C1 D1 C4 R5 LOAD TRANSFORMER N P EXT SWITCH D2 R2 Q1 R1 D4 D3 D5 Q4 3 2 1 1 2 3 R9 R6 C3 R4 R7 VDD Q3 R8 U3 LS7636 1 2 3 4 5 6 7 8 C2 R10 |
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