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.
ZLED7x20 Family
High Current 40V LED Driver with Internal Switch
ZLED7x20 Block Diagram
6 to 40 VDC
V
S
4
I
SENSE
Rs
D1
(C1)
C2
0.1µF
5
VCC
VDDA
(C3)
n LED
L1
33µH to
220µH
V
IN
Power
Supply,
Oscillator,
and Under-
Voltage
Detection
(UV)
VDDD
I
SENSE
V
IN
UV
POR
V
REF
SD
Power
MOS
1
LX
I
SENSE
And
Driver
DR
SD
3
500kΩ
Shutdown
I
SENSE
ADJ
ZLED7X20
POR
LX
Trim
GND
2
Typical Applications
Illuminated LED signs and other displays
LED street and traffic lighting (low voltage)
Architecture/building LED lighting
LED backlighting
Interior/exterior LED lighting
MR16 LED spot lights
Retrofit LED lighting fixtures
General purpose industrial and consumer LED applications
Ordering Information
Product Code
ZLED7020-ZI1R
ZLED7320-ZI1R
ZLED7520-ZI1R
ZLED7720-ZI1R
ZLED7020KIT-D1
ZLED-PCB8
Description
ZLED7020 – High Current (1200mA) 40V LED Driver with Internal Switch
ZLED7320 – High Current (1000mA) 40V LED Driver with Internal Switch
ZLED7520 – High Current (750mA) 40V LED Driver with Internal Switch
ZLED7720 – High Current (350mA) 40V LED Driver with Internal Switch
ZLED7020-D1 Demo Board, 1 ZLED-PCB8 and 5 ZLED7020 ICs
Test PCB with a 5W white high brightness (HB) LED, cascadable to a multiple LED string
Package
SOT89-5 (Tape & Reel)
DFN-5 (Tape & Reel)
DFN-5 (Tape & Reel)
DFN-5 (Tape & Reel)
Kit
Printed Circuit Board (PCB)
Sales and Further Information
Zentrum Mikroelektronik
Dresden AG
Global Headquarters
Grenzstrasse 28
01109 Dresden, Germany
Central Office:
Phone +49.351.8822.306
Fax
+49.351.8822.337
ZMD America, Inc.
1525 McCarthy Blvd., #212
Milpitas, CA 95035-7453
USA
USA Phone 1.855.275.9634
Phone +1.408.883.6310
Fax
+1.408.883.6358
www.zmdi.com
Zentrum Mikroelektronik
Dresden AG, Japan Office
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
LED_Drivers@zmdi.com
ZMD FAR EAST, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
Zentrum Mikroelektronik
Dresden AG, Korea Office
U-space 1 Building
11th Floor, Unit JA-1102
670 Sampyeong-dong
Bundang-gu, Seongnam-si
Gyeonggi-do, 463-400
Korea
Phone +82.31.950.7679
Fax
+82.504.841.3026
European Technical Support
Phone +49.351.8822.7.772
Fax
+49.351.8822.87.772
European Sales
(Stuttgart)
Phone +49.711.674517.55
Fax
+49.711.674517.87955
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.
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.
ZLED7x20 Family
High Current 40V LED Driver with Internal Switch
Contents
1
IC Characteristics .......................................................................................................................................................... 6
1.1
1.2
1.3
1.4
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
Absolute Maximum Ratings ................................................................................................................................... 6
ZLED7x20 Protection Features ............................................................................................................................ 15
LED Open Load Protection ........................................................................................................................... 15
Sense Resistor Rs ........................................................................................................................................ 18
Pin Configuration and Package ................................................................................................................................... 23
5.1
5.2
SOT89-5 Package Pin-out and Dimensions for the ZLED7020 ........................................................................... 23
DFN-5 Package Pin-out and Dimensions for the ZLED7320, ZLED7520 and ZLED7720 ................................... 25
6
7
8
9
Ordering Information ................................................................................................................................................... 27
Related Documents ..................................................................................................................................................... 27
Document Revision History ......................................................................................................................................... 28
Figure 5.2 SOT89-5 Package Dimensions for the ZLED7020 ............................................................................................... 24
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Embedded System
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