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.

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List of Figures

Figure 1.1

Figure 1.2

Figure 1.3

Figure 1.4

Figure 1.5

Figure 1.6

(Rs=0.15 , L1=47

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

Figure 1.7

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

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

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

Table 5.1

ZLED7020 Pin Descriptions—SOT89-5 Package......................................................................................... 23

Table 5.2

ZLED7320, ZLED7520 & ZLED7720 Pin Descriptions — DFN-5 Package .................................................. 25