ZLED7330

High Current 40V LED Driver with Switch Dimming

Data Sheet

August 16, 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.

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List of Figures

Figure 1.1

Figure 1.2

Figure 1.3

Figure 1.4

Figure 1.5

(Rs=0.15 , L1=47

µH) .................................................................................................................................. 10

Figure 1.6

Sense Voltage vs. Operating Temperature (Rs=0.10 , L1=47

Figure 1.7

Switch Dimming Waveform (Dimming Mode 2) ............................................................................................ 11

Figure 1.8

LED Open-Circuit Protection (Rs=0.30 , L1=47

Figure 3.1

ZLED7x30 Application Circuit for Switch Dimming ....................................................................................... 15

Figure 3.2

Basic ZLED7x30 Application Circuit with Output Current Determined only by Rs ........................................ 15

Figure 3.3

ZLED7x30 Application Circuit using a Halogen Electronic Transformer to Operate with AC Line Supply .... 16

Figure 5.1

ZLED7x30 Pin Configuration ........................................................................................................................ 21

List of Tables

Table 2.1

Dimming Configuration Options.................................................................................................................... 14

Table 3.1

Recommended Values for Sense Resistor Rs.............................................................................................. 17

Table 5.1

ZLED7x30 Pin Descriptions—SOP-8 Package............................................................................................. 21

Table 5.2

Package Dimensions SOP-8 ........................................................................................................................ 22