ZLED7030 High Current 40V LED Driver with Switch Dimming Features • Switch dimming with multiple levels • Three modes for output level settings • Up to 1.2A output current • Internal 40V power switch • Wide DC input voltage range 8.5 to 40 VDC • Output current accuracy: 5% (typical) • LED open-circuit protection • Thermal shutdown protection Brief Description The ZLED7x30 continuous-mode inductive stepdown converter family is one of our ZLED LEDcontrol ICs. It is designed for applications requiring high brightness and high current. The ZLED7x30 can efficiently drive a single LED or multiple series-connected LEDs from a voltage input higher than the LED forward voltage (Vin = 8.5 to 40VDC). It provides an adjustable output current (1.2A maximum), which is set via an external resistor and controlled by the ZLED7x30’s integrated high-side output current-sensing circuit and high speed internal 40V power switch. Its low conducting impedance ensures high system efficiency. Benefits • High efficiency: up to 98% • Very few external components needed for operation • Adds switch dimming function to existing installation The ZLED7x30 provides a switch dimming function. It detects external switch action to adjust output current, allowing dimming functionality to be achieved without changing the original lighting system circuitry. Available Support • Evaluation Kit The switch dimming is implemented in either twolevel mode or three-level mode. The output current of every level and the total number of levels are customer selected by setting the corresponding input conditions of DIM1 and DIM2 pin. Physical Characteristics • Operating temperature: -40°C to 105°C • Switching frequency: up to 1MHz • SOP-8 package The ZLED7x30 enables diverse industrial and consumer lighting applications requiring high driving currents, wide operating voltage range, high efficiency, and variable brightness control. It offers over-temperature and LED open-circuit protection. The ZLED7x30 can also minimize billof-material costs because very few external components are required for most applications. Only a resistor, a diode, an inductor, and three capacitors are needed for a typical basic application. ZLED7x30 Family Selection Matrix Product Max. Current Output Package ZLED7030 1.2A SOP-8 ZLED7330 1.0A SOP-8 ZLED7530 0.75A SOP-8 ZLED7730 0.35A SOP-8 For additional information on our ZLED driver family, visit www.zmdi.com/products/led-drivers/ ZLED7x30 Typical Application Circuit Rs Switch D1 Vs = 8.5 to 40 VDC Vin C1 C2 ≥220µF 0.1µF I SENSE ZLED7x30 (C3) L1 33 to 220 µH LED String LX GND DIM1 GND/Floating DIM2 GND/Floating © 2011 Zentrum Mikroelektronik Dresden AG — Rev. 1.2 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. ZLED7030 High Current 40V LED Driver with Switch Dimming ZLED7x30 Block Diagram 6 to 40 VDC Rs VS D1 ISENSE (C1) C2 2 VCC 0.1µF 1 VIN VCC SD Power Supply, Oscillator and UnderVoltage Detection (UV) (C3) n LED VDDA VDDD 8 ISENSE VREF LX VIN Power MOS UV ISENSE And Driver POR CLK L1 33µH to 220µH DR SD SD S Analog Dim Logic 6 DIM1 DIM2 Dim Select Shutdown Trim ZLED7x30 5 GND 7 Typical Applications Illuminated LED signs and other displays Interior/exterior LED lighting LED street and traffic lighting (low voltage) MR16 LED spot lights Architecture/building LED lighting Retrofit LED lighting fixtures LED backlighting General purpose industrial and consumer LED applications Ordering Information Product Sales Code Description Package ZLED7030-ZI1R ZLED7030 – High Current (1200mA) 40V LED Driver with Switch Dimming SOP-8 (Tape & Reel) ZLED7330-ZI1R ZLED7330 – High Current (1000mA) 40V LED Driver with Switch Dimming SOP-8 (Tape & Reel) ZLED7530-ZI1R ZLED7530 – High Current (750mA) 40V LED Driver with Switch Dimming SOP-8 (Tape & Reel) ZLED7730-ZI1R ZLED7730 – High Current (350mA) 40V LED Driver with Switch Dimming SOP-8 (Tape & Reel) ZLED7030KIT-D1 ZLED7030-D1 Demo Board, 1 ZLED-PCB8 and 5 ZLED7030 ICs Kit ZLED-PCB8 Test PCB with one 5W white High Brightness (HB) LED, cascadable to one multiple LED string Printed Circuit Board (PCB) Sales and Further Information www.zmdi.com Zentrum Mikroelektronik Dresden AG (ZMD AG) Zentrum Mikroelektronik Dresden AG, Japan Office ZMD America, Inc. Grenzstrasse 28 01109 Dresden Germany 8413 Excelsior Drive Suite 200 Madison, WI 53717 USA Phone +49 (0)351.8822.7.533 Fax +49 (0)351.8822.8.7533 Phone Fax +1 (608) 829-1987 +1 (631) 549-2882 2nd Floor, Shinbashi Tokyu Bldg. 4-21-3, Shinbashi, Minato-ku Tokyo, 105-0004 Japan Phone +81.3.6895.7410 Fax +81.3.6895.7301 [email protected] ZMD FAR EAST, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +886.2.2377.8189 Fax +886.2.2377.8199 DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. © 2011 Zentrum Mikroelektronik Dresden AG — Rev. 1.3 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.