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ZLED7320 Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers |
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5 / 28 page ZLED7020 High Current 40V LED Driver with Internal Switch Data Sheet August 12, 2011 © 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. 5 of 27 List of Figures Figure 1.1 ZLED7x20 Supply Operating Current vs. Input Supply Voltage (VIN = 6 to 40 V) ........................................... 8 Figure 1.2 ZLED7x20 Supply Quiescent Shutdown Current vs. Input Supply Voltage (VIN = 6 to 40 V).......................... 8 Figure 1.3 Efficiency (%) vs. Input Supply Voltage (VIN = 6 to 40 V) Per Number of LEDs (Rs=0.10 , L1=47µH).......... 9 Figure 1.4 Efficiency vs. Input Supply Voltage (VIN = 6 to 40 V) Per Number of LEDs (Rs=0.15 , L1=47µH) ................ 9 Figure 1.5 Efficiency vs. Input Supply Voltage (VIN = 6 to 40 V) ‡ Per Number of LEDs (Rs=0.30 , L1=47µH)............. 10 Figure 1.6 Output Current Variation vs. Input Supply Voltage (VIN = 6 to 40 V) Per Number of LEDs (Rs=0.15 , L1=47 µH) .................................................................................................................................. 10 Figure 1.7 Sense Voltage vs. Operating Temperature (Rs=0.10 , L1=47 µH, VIN = 40 V) ............................................ 11 Figure 1.8 Dimming Rate with 100Hz Square Wave Control Signal (PWM) at ADJ Pin (current rise time=7.85 µs) ..... 11 Figure 1.9 LED Open-Circuit Protection (Rs=0.30 , L1=47 µH, VIN = 24 V) .................................................................. 12 Figure 3.1 Basic ZLED7x20 Application Circuit with Output Current Determined only by Rs ........................................ 15 Figure 3.2 Basic ZLED7x20 Application Circuit with Output Current Controlled by External DC Voltage...................... 16 Figure 3.3 Basic ZLED7x20 Application Circuit with Output Current Set by External Square Wave Voltage (PWM) .... 16 Figure 3.4 Basic ZLED7x20 Application Circuit with Output Current Controlled by External Microcontroller Signal...... 17 Figure 5.1 ZLED7020 Pin Configuration – SOT89-5 Package....................................................................................... 23 Figure 5.2 SOT89-5 Package Dimensions for the ZLED7020 ....................................................................................... 24 Figure 5.3 ZLED7320, ZLED7520 & ZLED7720 Pin Configuration — DFN-5 Package ................................................ 25 Figure 5.4 DFN-5 (DFN4*4-05L) Package Dimensions for the ZLED7320, ZLED7520 & ZLED7720 ........................... 26 List of Tables Table 3.1 Recommended Values for Sense Resistor Rs (ADJ pin floating at nominal voltage VREF=1.2V).................. 18 Table 5.1 ZLED7020 Pin Descriptions—SOT89-5 Package......................................................................................... 23 Table 5.2 ZLED7320, ZLED7520 & ZLED7720 Pin Descriptions — DFN-5 Package .................................................. 25 |
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