ZLED7730 Datasheet, PDF (1/22 Pages) List of Unclassifed Manufacturers – High Current 40V LED Driver with Switch Dimming

High Current 40V LED Driver
with Switch Dimming
ZLED7x30
Datasheet
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 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 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 are needed for a typical basic
application.
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
Benefits
• High efficiency: up to 98%
• Very few external components needed for
operation
• Adds switch dimming function to existing
installation
Available Support
• Evaluation Kit
Physical Characteristics
• Operating temperature: -40°C to 105°C
• Switching frequency: up to 1MHz
• SOP-8 package
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
ZLED7x30 Typical Application Circuit
Rs
Switch
D1
Vs = 8.5 to 40 VDC
Vin
I _SENSE
C1
C2
≥220µF 0.1µF
ZLED7x30
LX
DIM1
GND DIM2
L1
33 to 220 µH
(C3)
GND/Floating
GND/Floating
LED
String
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016