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MV1001SC Datasheet(PDF) 4 Page - Shindengen Electric Mfg.Co.Ltd

Part # MV1001SC
Description  LED driver IC
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Manufacturer  SHINDENGEN [Shindengen Electric Mfg.Co.Ltd]
Direct Link  http://www.shindengen.co.jp/
Logo SHINDENGEN - Shindengen Electric Mfg.Co.Ltd

MV1001SC Datasheet(HTML) 4 Page - Shindengen Electric Mfg.Co.Ltd

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MV1001SC
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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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