UL52AG-SH2-R datasheet(4/6 Pages) UTC

Part #	UL52AG-SH2-R

Description	HIGH POWER FACTOR LINEAR CONSTANT CURRENT LED DRIVER

PDF	6 Pages

Scroll/Zoom	100%

Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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4 / 6 page

UL52B

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R125-069.A



FUNCTIONAL DESCRIPTION

UTC UL52B 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 （IOUT=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=0.70V/R

IOUT3=0.84V/R

IOUT4=0.91V/R

UL52AG-SH2-R Datasheet(PDF) 4 Page - Unisonic Technologies