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KC24AH-700 Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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KC24AH-700 Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 2 page 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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