MV1012SC datasheet(26/33 Pages) SHINDENGEN

部件名	MV1012SC

功能描述	LED driver IC

PDF	33 Pages

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制造商	SHINDENGEN [Shindengen Electric Mfg.Co.Ltd]

网页	http://www.shindengen.co.jp/

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MV1012SC

5.2.2

Combination of linear dimming and PWM dimming

Linear dimming and PWM dimming can be combined, as shown in Figure 22, thereby ensuring advantageous output

current accuracy throughout the range from 100% rated current to very small currents.

Assume VREF_any represents any given REF voltage in the [A] region and Io’ represents Io at that voltage. If Io is Io’ or

more, linear dimming is used. If Io is Io’ or less, PWM dimming is used. The high level of the signal for PWM dimming is

VREF_any, and the low level is VREF in the oscillation off region. Combining the dimming methods enables adjustments to

smaller currents than PWM dimming alone and achieves control with better output current accuracy than linear dimming

alone.

Figure 22 Combination of linear dimming and PWM dimming

CAT.No.1A0602-1E

MV1012SC 数据表(PDF) 26 Page - Shindengen Electric Mfg.Co.Ltd