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ULD0611G-SH2-R Datasheet(PDF) 4 Page - Unisonic Technologies |
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ULD0611G-SH2-R Datasheet(HTML) 4 Page - Unisonic Technologies |
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4 / 6 page  ULD0611 Preliminary CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 of 6 www.unisonic.com.tw QW-R125-045.b FUNCTIONAL DESCRIPTION UTC ULD0611 is constant current drive which integrates the functional module such as LED constant current control and OUT port high voltage drive. OUT1 port minimum input voltage is 6V （I OUT=20mA ）and it can reach output current 10mA ~ 60mA by external REXT resistor. Built-in LED constant current drive maintains LED current a high precision without impact of ambient temperature. The chip can achieve high efficiency and high power factor by opening four switches one by one. The chip output current is adjustable by REXT resistor IOUT=VREXT/R. Output current generated by four switches opening one by one is shown below: IOUT1=0.57V/R IOUT2=0.73V/R IOUT3=0.87V/R IOUT4=0.95V/R |
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