KC24RT Series CONSTANT CURRENT GREAT POWER LED DRIVER

Transcription

1 KC24RT Series CONSTANT CURRENT GREAT POWER LED DRIVER FEATURES PRODUCT PROGRAM RoHS SMD Package, simple and Input Voltage(V) convenient Dimming Efficiency Model control (%) High efficiency up to 6% Voltage Current Normal Range Ultra wide range input and (VDC) (ma) KC24RT PWM+Analogue 6 output KC24RT Constant current mode, great power PWM+Analogue 6 output KC24RT PWM+Analogue 6 AC-DC, EMC recommended circuit KC24RT PWM+Analogue 6 PWM dimming & Analogue dimming Remote ON/OFF, Continuous short KC24RT PWM+Analogue 6 circuit protection SPECIFICATIONS RoHS and UL Compliance Item Test condition Min. Typ. Max. Units Utmost input seconds 5 55 Recommended input VDC Input filter Capacitor(μF) range Vin=48V Input- drop Vin=5.5~48V,~LEDs 2 4 VDC APPLICATIONS current range See the product program The KC24RT is a series of step-down current accuracy ± 2 ±5 constant current source designed for driving current stability Vin=48V, Vo=3.3V~36V ± % high power LEDs. It features high efficiency, Internal power dissipation Vin=24V,5LEDS mw wide input range, high operating Temperature coefficient -4 C to+ C ambient ±.5 %/ C temperature, PWM and analogue dimming, Efficiency at full load 6 % remote ON/OFF control, and SMD package Ripple & Noise (Vp-p) 2 mv which facilitates the installation. It is widely Continuous, Short circuit protection automatic recovery used in LED illumination areas such as 3mA / 35mA decorative light, special control light, Operating temperature range 5mA/ 6mA/ ma -4 backlight, commercial light, streetlight, C Storage temperature range in-house light and car light, etc. Maximum case temperature Maximum capacitive Load μf Operating frequency range khz MTF MIL-HDK-2F(+25 C) 2,, Hours Case Material Epoxy Resin (UL4-V) Dimensions 23.86*8.*8. mm Weight 6 g PWM Dimming and ON/OFF Control (leave open if not used) MODEL SELECTION ON Open or 2.8V<Vc<6V Remote ON/OFF KC24RT-35 OFF(shutdown) Vc<.6V Current Remote pin current Vc=5V ma Quiescent input current Vin=24V, V c <.6V 4 μa Package Style PWM frequency (shutdown) 2 Hz Input Voltage Analogue dimming (leave open if not used) Product Series Input range Vin=5.5-48V -5V current range Vin=5.5-48V %-% Control range Full on.2v±5mv Full off 4.5V±2mV MORNSUN Science & Technology Co.,Ltd. Driving current Vc=5V.6mA(max) Address: No. 5, Kehui St., Kehui EMC development center, Science Ave., EMI conducted EN555 power port ( Refer to Figure 6) Guangzhou Science City, Luogang RFI conducted EN555 CISPR22 class ( Refer to Figure 6) district, Guangzhou,P.R.China. ESD /EN level 2 contact ±4KV perf. Criteria ( Refer to Figure 6) Tel: R/S /EN level 3 (V/m) perf. Criteria A Fax: EFT /EN level 2 (±KV) perf. Criteria ( Refer to Figure 6) info@mornsun.cn Surge /EN level 2 (±KV) perf. Criteria ( Refer to Figure 6) C/S /EN level 3 (Vr.ms) perf. Criteria A KC24RT -XXX A/4 Page of 5

2 INPUT VS OUTPUT Input (VDC) range(vdc) constant current (ma) power (W Max) Input (VDC) range(vdc) constant current (ma) power (W Max) TYPICAL APPLICATION CIRCUITS st LED 8 st LED (Figure ) Series Application (Figure 2) Parallel-series Application If it is necessary to protect LED in actual application, you could connect a PTC to the input of every channel or all channels, as shown in Figure 2. Note: The negative output terminal can t connect, or the module may be damaged. DIGITAL DIMMING CONTROL Current Current(LED appears bright) Current(LED appears dim) For the rated frequency PWM dimming, the output current of driver matters to the pulse width of the PWM signal, and the numerate please refer to the following formula: Io_set = (DT-.6) T Io_norm Io_set refers to the expected output current value. Io_norm refers to the rated output current D refers to the pulse width of the PWM signal T refers to the cycle of the PWM signal Note: The formula only supplies as a reference, and the output current may be a little deviation with different load. The Ton(min) of PWM signal must be greater than.ms, or the driver can t be operated normally. It is natural for the driver to generate an audibly noise in dimming process, because the frequency of the control circuit is within human audibly range (2Hz~2KHz). In order to avoid the human eye can observe the LED flashes, the PWM dimming frequency is recommended to set above Hz. KC24RT -XXX A/4 Page 2 of 5

3 ANALOGUE DIMMING CONTROL AND APPLICATION EXAMPLE -V On/Off (Optional) 5K 6 8 st LED % 5K6 %.2V V 2V 3V 4V 5V 5V Voltage Control(-5V max) (Figure 3) Analogue dimming circuit (Figure 4) Analogue input VS output Current Analogue Input Voltage EMC RECOMMENDED CIRCUIT.25mH 6 SMCG5 + 4μF 2.2μF.μF 8.μF st LED (Figure 5) EMI/RFI conducted EN5522 recommended circuit LCM VIN VO+ Tvs C C C2 DIM* R C3 DIM KC24RT Load VO- (Figure 6) EMI/EMC recommended circuit 2 Note:. DIM pin is the module s PWM dimming pin as shown in Figure While adding circuit 2,it may extend the PWM dimming output reaction time. EMI/EMC standard: Item Standard Level Predicate Remark EMI conducted ESD Surge EFT EN : : :24 Power port Qualification Add external circuit ±4KV Add external circuit 2 ±KV Add external circuit ±KV Add external circuit Recommended parameter: Components Tvs LCM C C C2 C3 R Specifications SMCJ48A,5W(ringtking) 6.8μH CD43(CEAIYA) 4μF/5V(CapXon) 4.μF/5V 2 (TORCH) 2.2μF/5V 2 (TORCH) 4pF/V 85 (TORCH) 68Ω 85(can replaced by inductance or magnetic bead) KC24RT -XXX A/4 Page 3 of 5

4 AC INPUT RECOMMENDED CIRCUIT AC IN 5VAC ~ 32VAC AC IN.μF Optional μf~33μf st LED (Figure ) AC input recommended circuit TYPICAL TEMPERATURE CURVE RECOMMENDED REFLOW SOLDERING PROFILE Temperature Derating Graph 25 Peak.Temp 24 C Sec Max Temperature ( C) Sec Max (>22 C) 22 C 5 Time (sec.) Operating Temp.( C ) Remark: The curve applies only to the hot air reflow soldering. CHARACTERISTICS CURVE Vin=2V Voltage(V) KC24RT-3 KC24RT-35 KC24RT-5 KC24RT-6 KC24RT Vin=24V (V) KC24RT-3 KC24RT-35 KC24RT-5 KC24RT-6 KC24RT Vin=36V (V) KC24RT-3 KC24RT-35 KC24RT-5 KC24RT-6 KC24RT Vin=48V (V) KC24RT-3 KC24RT-35 KC24RT-5 KC24RT-6 KC24RT- KC24RT -XXX A/4 Page 4 of 5

5 OUTLINE DIMENSIONS & PIN CONNECTIONS Note:. Operation under minimum output will not damage the converter; However, they may not meet all specification listed. 2. All specifications measured at Ta=25 C, humidity<5%, nominal input and rated output load unless otherwise specified. 3. Only typical models listed, other models may be different, please contact our technical person for more details. 4. In this datasheet, all the test methods of indications are based on corporate standards. KC24RT -XXX A/4 Page 5 of 5