SKC24RT Series CONSTANT CURRENT GREAT POWER LED DRIVER

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1 wwww.schmid-m.com LED Driver SKC24RT Series CONSTANT CURRENT GREAT POWER LED DRIVER EATURES SMD Package, simple and convenient High efficiency up to 6% Ultra wide range voltage input and output Constant current mode, great power output AC-DC, EMC recommended circuit PWM dimming & Analogue dimming Remote ON/O, Continuous short circuit protection RoHS and UL Compliance APPLICATIONS The SKC24RT is a series of step-down constant current source designed for driving high power LEDs. It features high efficiency, wide input voltage range, high operating temperature, PWM and analogue dimming, remote ON/O control, and SMD package which facilitates the installation. It is widely used in LED illumination areas such as decorative light, special control light, backlight, commercial light, streetlight, in-house light and car light, etc. MODEL SELECTION O utput Current Package Style Input Voltage Product Series PRODUCT PROGRAM Part Number Input Voltage(V) Dimming control Efficiency (%) Voltage Current Normal Range (VDC) (ma) SKC24RT PWM+Analogue PWM+Analogue 6 SKC24RT PWM+Analogue 6 SKC24RT PWM+Analogue 6 SKC24RT PWM+Analogue 6 SPECIICATIONS Item Test condition Min. Typ. Max. Units Utmost input voltage seconds 5 55 Recommended input voltage VDC Input filter Capacitor(µ) voltage range Vin=4V Input- voltage drop Vin=5.5~4V,~LEDs 2 4 VDC current range See the product program current accuracy ± 2 ±3 current stability Vin=4V, Vo=3.3V~36V ± % Internal power dissipation Vin=24V,5LEDS mw Temperature coefficient -4 C to+ C ambient ±.5 %/ C Efficiency at full load 6 % Ripple & Noise (Vp-p) 2 mv Short circuit protection Continuous, automatic recovery 3mA / 35mA -4 5 Operating temperature range 5mA/ 6mA/ ma -4 C Storage temperature range Maximum case temperature Maximum capacitive Load µ Operating frequency range khz MT MIL-HDK-2(+25 C) 2,, Hours Case Material Epoxy Resin (UL4-V) Dimensions 23.6*.*. mm Weight 6 g PWM Dimming and ON/O Control (leave open if not used) Remote ON/O ON Open or 2.V<Vc<6V O(shutdown) Vc<.6V Remote pin current Vc=5V ma Quiescent input current Vin=24V, V c <.6V 4 µa PWM frequency 2 Hz Analogue dimming (leave open if not used) Input voltage range Vin=5.5-4V -5V current range Vin=5.5-4V %-% Control voltage range ull on.2v±5mv ull off 4.5V±2mV Driving current Vc=5V.6mA(max) EMC EMI conducted EN555 power port ( Refer to igure 6) RI conducted EN555 CISPR22 class ( Refer to igure 6) ESD /EN level 2 contact ±4KV perf. Criteria ( Refer to igure 6) R/S /EN level 3 (V/m) perf. Criteria A ET /EN level 2 (±KV) perf. Criteria ( Refer to igure 6) Surge /EN level 2 (±KV) perf. Criteria ( Refer to igure 6) C/S /EN level 3 (Vr.ms) perf. Criteria A Schmid Multitech GmbH - - The Copyright and authority for the interpretation of the products are reserved by SCHMID-M. Specifications subject to change without notice.

2 INPUT VS OUTPUT Input voltage voltage range(vdc) constant power Input voltage voltage range(vdc) constant current (ma) power (W Max) TYPICAL APPLICATION CIRCUITS (igure ) Series Application (igure 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 igure 2. 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) or 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) Io_norm T 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 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

3 ANALOGUE DIMMING CONTROL AND APPLICATION EXAMPLE -V On/Off (Optional) 5K 5K6 (igure 3) Analogue dimming circuit % Current Analogue Input Voltage %.2V V 2V 3V 4V 5V 5V Voltage Control(-5V max) (igure 4) Analogue input voltage VS output EMC RECOMMENDED CIRCUIT.25mH SMCG5 + 4µ 2.2µ.µ.µ (igure 5) EMI/RI conducted EN5522 recommended circuit LCM VIN VO+ Tvs C C C2 DIM* R C3 DIM SKC24RT Load VO- (igure 6) EMI/EMC recommended circuit 2. DIM pin is the module s PWM dimming pin as shown in igure While adding circuit,it may extend the PWM dimming output reaction time. EMI/EMC standard Item Standard Level Predicate Remark EMI conducted ESD Surge ET EN : : :24 Power port Qualification ±4KV ±KV ±KV Recommended parameter Components Tvs LCM C C C2 C3 R Specifications SMCJ4A,5W ringtking 6.µH CD43 CEAIYA 4µ/5V CapXon 4.µ/5V 2 (TORCH) 2.2µ/5V 2 (TORCH) 4p/V 5 (TORCH) 6Ω 5(can replaced by inductance or magnetic bead) - 3 -

4 AC INPUT RECOMMENDED CIRCUIT AC IN 5VAC ~ 32VAC AC IN.µ Optional µ ~33 µ + - (igure ) AC input recommended circuit TYPICAL TEMPERATURE CURVE RECOMMENDED RELOW SOLDERING PROILE Temperature Derating Graph 25 Peak.Temp 24 C Sec Max Temperature ( C) Sec Max (>22 C) 22 C Time (sec.) Operating Temp.( C ) Remark: The curve applies only to the hot air reflow soldering. CHARACTERISTICS CURVE E fficiency(% ) Vin=2V Voltage(V) SKC24RT-3 SKC24RT-5 SKC24RT-6 SKC24RT- E fficiency(% ) Vin=24V voltage(v) SKC24RT-3 SKC24RT-5 SKC24RT-6 SKC24RT- Efficiency(%) Vin=36V voltage(v) SKC24RT-3 SKC24RT-5 SKC24RT-6 SKC24RT- Efficiency(%) Vin=4V voltage(v) SKC24RT-3 SKC24RT-5 SKC24RT-6 SKC24RT

5 OUTLINE DIMENSIONS & PIN CONNECTIONS MECHANICAL DIMENSIONS RECOMMENDED OOTPRINT 23.6 ±.5 [.3 ±.2 ].2 ±.2 [.4 ±. ] (Top View) 3. ±.2 [.53 ±. ].2 [.666] 2.5 ±.2 [. ±. ].5 ±. [.2 ±.4 ]. ±.35 [. ±.4 ] 2.54 [.]. [.] 2.54 [.].5 ±.2.2 ±.] (ront View).5 [.25]. [.35] grid:2.54*2.54mm MAX3.34 [.35]. [.4] TUE OUTLINE DIMENSIONS.34±.2 [.53 ±.2 ] 2.2±.2 [. ±. ] (Side View).±.4 [.3 ±. ] A.34±.2 [.53 ±.2 ] ~5 A.25 ±. [. ±.4 ] 22.6[.]. [.3] 5. [.54] OOTPRINT DETAILS Pin unction NC:No Connection ON/O/PWM ANALOGUE DIMMING Vin Unit: mm[inch] Pin section tolerances: ±.mm[ ±.3inch] General tolerances: ±.25mm[ ±.inch].4 [.33] Unit :mm(inch) General tolerances: ±.5mm[ ±.2inch] L=53mm[2.66inch] Tube Quantity: 2pcs L=22mm[6.6inch] Tube Quantity: pcs Short tube inner packaging dimensions: L*W*H=255**mm; Short tube outer packaging dimensions (with six inner packaging boxes): L*W*H=35*2*2mm; Long tube inner packaging dimensions: L*W*H=5*2*mm; Long tube outer packaging dimensions(with two inner packaging boxes) L*W*H=6*25*22mm; Long tube outer packaging dimensions(with three inner packaging boxes) L*W*H=6*25*325mm.. Operation under minimum output voltage 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 voltage 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. Schmid Multitech GmbH The Copyright and authority for the interpretation of the products are reserved by SCHMID-M. Specifications subject to change without notice