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=

R

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

REXT1

REXT2

0.3

0.3

I2=

RR



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

REXT1

0.6

I3=

R

When the switching period > 3S, System reset.