ZLED7030

ZLED7030
High Current 40V LED Driver with Switch Dimming
Features
• Switch dimming with multiple levels
• Three modes for output level settings
• Up to 1.2A output current
• Internal 40V power switch
• Wide DC input voltage range 8.5 to 40 VDC
• Output current accuracy: 5% (typical)
• LED open-circuit protection
• Thermal shutdown protection
Brief Description
The ZLED7x30 continuous-mode inductive stepdown converter family is one of our ZLED LEDcontrol ICs. It is designed for applications requiring
high brightness and high current. The ZLED7x30
can efficiently drive a single LED or multiple
series-connected LEDs from a voltage input higher
than the LED forward voltage (Vin = 8.5 to
40VDC). It provides an adjustable output current
(1.2A maximum), which is set via an external
resistor and controlled by the ZLED7x30’s
integrated high-side output current-sensing circuit
and high speed internal 40V power switch. Its low
conducting impedance ensures high system efficiency.
Benefits
• High efficiency: up to 98%
• Very few external components needed for
operation
• Adds switch dimming function to existing
installation
The ZLED7x30 provides a switch dimming function. It detects external switch action to adjust output current, allowing dimming functionality to be
achieved without changing the original lighting system circuitry.
Available Support
• Evaluation Kit
The switch dimming is implemented in either twolevel mode or three-level mode. The output current
of every level and the total number of levels are
customer selected by setting the corresponding
input conditions of DIM1 and DIM2 pin.
Physical Characteristics
• Operating temperature: -40°C to 105°C
• Switching frequency: up to 1MHz
• SOP-8 package
The ZLED7x30 enables diverse industrial and
consumer lighting applications requiring high
driving currents, wide operating voltage range,
high efficiency, and variable brightness control. It
offers over-temperature and LED open-circuit
protection. The ZLED7x30 can also minimize billof-material costs because very few external
components are required for most applications.
Only a resistor, a diode, an inductor, and three
capacitors are needed for a typical basic
application.
ZLED7x30 Family Selection Matrix
Product
Max. Current Output
Package
ZLED7030
1.2A
SOP-8
ZLED7330
1.0A
SOP-8
ZLED7530
0.75A
SOP-8
ZLED7730
0.35A
SOP-8
For additional information on our ZLED driver
family, visit www.zmdi.com/products/led-drivers/
ZLED7x30 Typical Application Circuit
Rs
Switch
D1
Vs = 8.5 to 40 VDC
Vin
C1
C2
≥220µF 0.1µF
I SENSE
ZLED7x30
(C3)
L1
33 to 220 µH
LED
String
LX
GND
DIM1
GND/Floating
DIM2
GND/Floating
© 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.
ZLED7030
High Current 40V LED Driver with Switch Dimming
ZLED7x30 Block Diagram
6 to 40 VDC
Rs
VS
D1
ISENSE
(C1)
C2
2
VCC
0.1µF
1
VIN
VCC
SD
Power
Supply,
Oscillator
and
UnderVoltage
Detection
(UV)
(C3)
n LED
VDDA
VDDD
8
ISENSE
VREF
LX
VIN
Power
MOS
UV
ISENSE
And
Driver
POR
CLK
L1
33µH to
220µH
DR
SD
SD
S
Analog
Dim
Logic
6
DIM1
DIM2
Dim
Select
Shutdown
Trim
ZLED7x30
5
GND
7
Typical Applications
Illuminated LED signs and other displays
Interior/exterior LED lighting
LED street and traffic lighting (low voltage)
MR16 LED spot lights
Architecture/building LED lighting
Retrofit LED lighting fixtures
LED backlighting
General purpose industrial and consumer LED applications
Ordering Information
Product Sales Code Description
Package
ZLED7030-ZI1R
ZLED7030 – High Current (1200mA) 40V LED Driver with Switch Dimming
SOP-8 (Tape & Reel)
ZLED7330-ZI1R
ZLED7330 – High Current (1000mA) 40V LED Driver with Switch Dimming
SOP-8 (Tape & Reel)
ZLED7530-ZI1R
ZLED7530 – High Current (750mA) 40V LED Driver with Switch Dimming
SOP-8 (Tape & Reel)
ZLED7730-ZI1R
ZLED7730 – High Current (350mA) 40V LED Driver with Switch Dimming
SOP-8 (Tape & Reel)
ZLED7030KIT-D1
ZLED7030-D1 Demo Board, 1 ZLED-PCB8 and 5 ZLED7030 ICs
Kit
ZLED-PCB8
Test PCB with one 5W white High Brightness (HB) LED, cascadable to one
multiple LED string
Printed Circuit Board (PCB)
Sales and Further Information
www.zmdi.com
Zentrum Mikroelektronik
Dresden AG (ZMD AG)
Zentrum Mikroelektronik
Dresden AG, Japan Office
ZMD America, Inc.
Grenzstrasse 28
01109 Dresden
Germany
8413 Excelsior Drive
Suite 200
Madison, WI 53717
USA
Phone +49 (0)351.8822.7.533
Fax
+49 (0)351.8822.8.7533
Phone
Fax
+1 (608) 829-1987
+1 (631) 549-2882
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
[email protected]
ZMD FAR EAST, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
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.
© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 1.3
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.