ZLED7730ZI1R ZMDI, ZLED7730ZI1R Datasheet - Page 2

• Manufacturer Part Number: ZLED7730ZI1R
• Description: LED Lighting Drivers LED driver
• Manufacturer: ZMDI

Specifications of ZLED7730ZI1R

• Rohs: yes
• Input Voltage: 8.5 V to 40 V
• Operating Frequency: 1 MHz
• Maximum Supply Current: 600 uA
• Output Current: 0.35 A
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: SOP-8
• Minimum Operating Temperature: - 40 C
• Power Dissipation: 500 mW

Brief Description
The ZLED7x30 continuous-mode inductive step-
down converter family is one of our ZLED LED-
control 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
integrated high-side output current-sensing circuit
and high speed internal 40V power switch. Its low
conducting impedance ensures high system effi-
ciency.
The ZLED7x30 provides a switch dimming func-
tion. It detects external switch action to adjust out-
put current, allowing dimming functionality to be
achieved without changing the original lighting sys-
tem circuitry.
The switch dimming is implemented in either two-
level 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.
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 bill-
of-material costs because very few external
components are required for most applications.
Only a resistor, a diode, an inductor, and three
capacitors
application.
ZLED7x30 Typical Application Circuit
© 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.
ZLED7730
High Current 40V LED Driver with Switch Dimming
Vs = 8.5 to 40 VDC
and
are
Switch
controlled
needed
≥220 F
C1
by
for
the
a
0.1 F
C2
typical
ZLED7x30’s
Vin
ZLED7x30
basic
GND
Rs
I
DIM2
DIM1
SENSE
LX
Features
Benefits
Available Support
Physical Characteristics
For additional information on our ZLED driver
family, visit www.zmdi.com/products/led-drivers/
ZLED7030
ZLED7330
ZLED7530
ZLED7730
Product
D1
Switch dimming with multiple levels
Three modes for output level settings
Up to 0.35A 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
High efficiency: up to 98%
Very few external components needed for
operation
Adds switch dimming function to existing
installation
Evaluation Kit
Operating temperature: -40° C to 105° C
Switching frequency: up to 1MHz
SOP-8 package
GND/Floating
GND/Floating
ZLED7x30 Family Selection Matrix
33 to 220 H
L1
Max. Current Output
(C3)
0.75A
0.35A
1.2A
1.0A
String
LED
Package
SOP-8
SOP-8
SOP-8
SOP-8