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ULD0691G-SH2-R Datenblatt(PDF) 4 Page - Unisonic Technologies

Teilenummer ULD0691G-SH2-R
Bauteilbeschribung  CMOS IC
PDF  5 Pages
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Hersteller  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

ULD0691G-SH2-R Datenblatt(HTML) 4 Page - Unisonic Technologies

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ULD0691
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
4 of 5
www.unisonic.com.tw
QW-R125-036.E
FUNCTIONAL DESCRIPTION
UTC ULD0691 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=0.56V/R
IOUT2=0.73V/R
IOUT3=0.87V/R
IOUT4=0.94V/R



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