UL23EBL-SH2-R datasheet(6/8 Pages) UTC

Part #	UL23EBL-SH2-R

Description	HIGH ACCURACY LINEAR CONSTANT CURRENT LED DRIVER

PDF	8 Pages

Scroll/Zoom	100%

Manufacturer	UTC [Unisonic Technologies]

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

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6 / 8 page

UL23EB

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 8

www.unisonic.com.tw

QW-R125-071.c



TYPICAL APPLICATION CIRCUIT (Cont.)

In the adjust color temperature application of UL23EB, User can change the state of the two output ports by turn

on/off the power switch, that adjust the color temperature through the light of two different colored LED lights.

Changing the REXT external resistance can adjustment the output power.

Open the switch for the 1st time, during constant current：

REXT2

0.6

I1=

Open the switch for the 2nd time, during constant current：

REXT1

REXT2

0.3

I2=



Open the switch for the 3rd time, during constant current：

REXT1

0.6

I3=

Typical Applications：RREXT1=RREXT2=30Ω, 0.3S < Switching Period < 3S

Open the switch for the 1st time, IOUT2=30mA；

Open the switch for the 2nd time, IOUT1=I OUT2=15mA；

Open the switch for the 3rd time, I OUT1=30mA；

When the switching period > 3S, System reset.

UL23EBL-SH2-R Datasheet(PDF) 6 Page - Unisonic Technologies