ZLED7000 40V LED Driver with Internal Switch Brief Description Features Capable of up to 95% efficiency* Operates in continuous mode with a wide input range from 6 VDC to 40 VDC Integrated 40V power switch One pin on/off or brightness control via PWM or DC voltage control signal input Switching frequency: ≤ 1MHz Dimming rate: 1200:1 (typical) Output current accuracy: 5% (typical) Built-in thermal shutdown and open-circuit protection for LED Very few external components needed for operation Broad range of applications: outputs up to ≤750mA SOT89-5 package The ZLED7000, one of our ZLED Family of LED control ICs, is an inductive step-down converter that is optimal for driving a single LED or multiple LEDs (connected in series) from a voltage source greater than the voltage rating of the LED. The ZLED7000 operates in continuous mode. Capable of operating efficiently with voltage supplies ranging from 6 VDC to 40 VDC, it is ideal for low-voltage lighting applications. The ZLED7000 minimizes current consumption by remaining in a lowcurrent standby mode (output is off) until a voltage of ≥0.3V is applied to the ADJ pin. In operating mode, the ZLED7000 can source LEDs with an output current of ≤ 750mA (≤ 30 watts of output power) that is externally adjustable.* The ZLED7000’s integrated output switch and high-side current sensing circuit use an external resistor to adjust the average output current. Linearity is achieved via an external control signal at the ZLED7000’s ADJ pin, implemented either as a pulse-width modulation (PWM) waveform for a gated output current or a DC voltage for a continuous current. Application Examples Illuminated LED signs and other displays LED traffic and street lighting (low-voltage) Architectural LED lighting, including low-voltage applications for buildings Halogen replacement LEDs (low-voltage) LED backlighting General purpose exterior and interior LED lighting, including applications requiring low-voltage General purpose low-voltage industrial applications ZLED7000 Application Circuit 6 to 40 VDC RS VS D1 5 C1 ISENSE VIN 1μF n LED 4 ZLED7000 3 ADJ GND L1 LX 1 47μH 2 * See section 2.3 in the data-sheet for details © 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.1 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. ZLED7000 40V LED Driver with Internal Switch SOT89-5 Package Dimensions and Pin Assignments D D1 LX E1 E VIN GND Thermal Pad b1 ADJ L e ISENSE b e1 Dimension (mm) Symbol Dimension (mm) Symbol Min Max Min Max A 1.400 1.600 E 2.300 2.600 3.940 b 0.320 0.520 E1 b1 0.360 0.560 e 4.250 1.500 Typ c 0.350 0.440 e1 2.900 3.100 D 4.400 4.600 L 0.900 1.100 D1 1.400 1.800 Ordering Information Product Sales Code Description Package ZLED7000-ZI1R ZLED7000 – 40V LED Driver SOT89-5 (Tape & Reel) ZLED7000KIT-D1 ZLED7000 used in a MR16 Halogen replacement Demo Kit 12VAC/VDC, including 1 ZLED-PCB1 Kit ZLED-PCB1 Test PCB with one 3W white High Brightness (HB) LED, cascadable to one multiple LED string Printed Circuit Board (PCB) ZLED-PCB2 10 unpopulated test PCBs for modular LED string with footprints of 9 common HB LED types 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 +1 (608) 829-1987 Fax +1 (631) 549-2882 [email protected] 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 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. © 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.1 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.