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UPSLD01G-SH2-R Fiches technique(PDF) 4 Page - Unisonic Technologies

No de pièce UPSLD01G-SH2-R
Description  HIGH POWER FACTOR LINEAR CONSTANT CURRENT LED DRIVER
PDF  5 Pages
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Fabricant  UTC [Unisonic Technologies]
Site Internet  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UPSLD01G-SH2-R Fiches technique(HTML) 4 Page - Unisonic Technologies

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UPSLD01
Preliminary
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
4 of 5
www.unisonic.com.tw
QW-R125-036.b
FUNCTIONAL DESCRIPTION
UTC UPSLD01 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=0.55V/R
IOUT2=0.70V/R
IOUT3=0.85V/R
IOUT4=0.90V/R



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