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KC24AH-500 Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd.

Part # KC24AH-500
Description  PWM DIM CONSTANT CURRENT OUTPUT LED DRIVER
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Manufacturer  MORNSUN [MORNSUN Science& Technology Ltd.]
Direct Link  http://www.mornsun-power.com
Logo MORNSUN - MORNSUN Science& Technology Ltd.

KC24AH-500 Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd.

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The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
KC24AH -XXX
A/0-2009
Page 2 of 2
DIGITAL DIMMING CONTROL
PWM Digital C ontrol Signal
0
1
Output current
PWM Digital C ontrol Signal
0
1
Output current(LED appears bright)
0
1
PWM Digital C ontrol Signal
0
1
Output current(LED appears dim)
0
1
This is a PWM type digital dimming, which you can control the output current by adjusting the pulse width of the PWM signal.
Io_set=Io_norm
×D
Io_set refres to the wanted output current value.
Io_norm refers to the rated output current
D refers to the pulse width of the PWM signal
For example: we assume the rated output current is 300mA and wanted output current is 150mA, then the pulse width should be 0.5 from the
equation above. That is say if we keep the pulse width of PWM signal at 0.5, the output current will be kept at 150mA. It is natural for the driver to
generate a audibly noise in dimming process, because the frequency of the control circuit is within human audibly range (20Hz~20KHz).
TYPICAL APPLICATION CIRCUITS
PWM Dimming control circuit
1st LED
Last LED
KC24AH-XXX
+Vin
GND
1
4
3
6
5
KC24AH-XXX
+Vin
GND
1
4
3
6
5
1st LED
Last LED
1st LED
Last LED
PTC
PTC
Figure 1
1
Figure 2
EMI filter circuit
1st LED
Last LED
KC24AH-XXX
+Vin
GND
1
4
3
6
5
C1
FILTER2T
C2
Figure 3
In actual use, if necessary to protect LED, a PTC of positive temperature coefficient may be connect to the input end of every channel or all
channels, as shown in Figure 2.
OUTLINE DIMENSIONS & PIN CONNECTIONS
10. 20[0 .401]
7.6 2[0. 300]
1
4
3
5
6
(B otto m Vi ew)
F O O TPR IN T D E TA ILS
P in
1
4
6
5
Vin
G ND
ON /OFF / PWM
+ Vo ut
Fu n ct ion
3
- Vo ut
Co m me n ts
D C Su p ply
Le a ve o pe n i f n o t u se
D o n o t c o n ne c t to -Vo ut
L ED C a th o d e c on n e ct ion
L ED An od e co n ne c tion
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
TUBE OUTLINE DIMENSIONS
Note
Unit m m[inch]
General tolerances
0.5m m[
0.020inch]
:
:
±
Note
Unit m m[ inch]
Pin section tolerances
0.1m m[
0.039inch]
G eneral tolerances
0.25mm [
0.010inch]
:
:
±
±
L=530m m[ 20.866inch]
Tube Q uantity: 50pcs
L=220m m[ 8.661inch]
Tube Q uantity: 20pcs
25. 20[0 .99 2]
11.8 0[0. 465]
0. 60[0 .024]
22 .80 [0.8 98]
17 .78[ 0.70 0]
4 .10 [0.1 61]
0 .50 [ 0.02 0]
1 7.78 [0.7 00]
2.5 4 [0. 100]
∅∅
1.00 [
0.039]
1
4
3
5
6
(Side Vie w)
Note:
1. All specifications measured at Ta=25
°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
2. In this datasheet, all the test methods of indications are based on corporate standards.


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