ZLED7520

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.

16 of 27

Vin

LX

GND

ZLED7X20

D1

Vs = 6 to 40 VDC

C3

Rs

L1

C1

C2

0.1 F

ADJ

+

_

DC

(0.3V to 1.2V)

LED

String

Figure 3.2

Basic ZLED7x20 Application Circuit with Output Current Controlled by External DC Voltage

Figure 3.3

Basic ZLED7x20 Application Circuit with Output Current Set by External Square Wave Voltage (PWM)