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MV1001SC Datasheet(PDF) 4 Page - Shindengen Electric Mfg.Co.Ltd |
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MV1001SC Datasheet(HTML) 4 Page - Shindengen Electric Mfg.Co.Ltd |
4 / 35 page ![]() MV1001SC 3 5. Dimming characteristics............................................................................................................................................... 20 5.1 Operation in each mode......................................................................................................................................... 21 5.1.1 [A] Frequency modulation region................................................................................................................... 21 5.1.2 [B] Off-time modulation region .................................................................................................................. 22-23 5.1.3 [C] Minimum dimming region ......................................................................................................................... 24 5.2 PWM dimming........................................................................................................................................................ 25 5.2.1 PWM dimming in 100% and minimum dimming ratio regions........................................................................ 25 5.2.2 Combination of linear dimming and PWM dimming ....................................................................................... 26 5.3 Dimming circuit ...................................................................................................................................................... 27 5.3.1 Example of dimming circuit smoothing PWM signal ...................................................................................... 27 5.3.2 Example of dimming circuit in high-side drive configuration .......................................................................... 28 6. Operations in abnormal situations ............................................................................................................................... 29 6.1 LED open-circuit .................................................................................................................................................... 29 6.2 LED short-circuit .................................................................................................................................................... 29 6.3 Abnormal heat buildup ........................................................................................................................................... 30 6.4 CS pin open-circuit................................................................................................................................................. 30 6.5 CS-GND short-circuit ............................................................................................................................................. 30 6.6 Current detection resistor open-circuit ................................................................................................................... 30 6.7 Current detection resistor short-circuit ................................................................................................................... 30 7. Standard circuit example ............................................................................................................................................. 31 7.1 Power supply specification and circuit diagram...................................................................................................... 31 7.2 Power supply characteristics.................................................................................................................................. 32 7.3 Example of operation waveform........................................................................................................................ 32-33 CAT.No.1A0102-1E |
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