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SM8130A50D 데이터시트(PDF) 5 Page - Nippon Precision Circuits Inc |
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SM8130A50D 데이터시트(HTML) 5 Page - Nippon Precision Circuits Inc |
5 / 6 page SM8130 series NIPPON PRECISION CIRCUITS INC.—5 FUNCTIONAL DESCRIPTION LED driving current is able to control by regulating CONT pin input voltage. The relation between VCONT and ILED is ILED [A] = 0.04 × VCONT [V]. If CONT pin input voltage is over the limit value, the LED current lim- iter turns on to keep ILED at a constant limit current. By the CONT input hysteresis, VCONT – ILED relation has a discontinuity area at limiter turning off. TYPICAL APPLICATIONS VCONT ILED/pcs IIN 0.125V 5mA/pcs 35mA 0.250V 10mA/pcs 65mA 0.375V 15mA/pcs 95mA 0.500V 20mA/pcs 125mA VCONT 0.75V ILED control voltage input ILED 30mA ILED current hys 5mA Limiter on ILED = VCONT 0.04 [A] VREF AMP Soft Start Driver OSC MOS Switch C1P C1M DIN1 VIN ENA Current Control Current Limiter CONT VSS DIN2 DIN3 1.0 µF VOUT 4.7 µF ILED DC 2.7 to 4.6V 4.7 µF VCONT IIN |
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