ZXLD1371 Datasheet, PDF (1/2 Pages) Diodes Incorporated – 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER

Issue Number │001
February 2012
New Product
Announcement
ZXLD1371
LED Driver Controller Handles More
Demanding Lighting Applications
The ZXLD1371 is a high
accuracy LED driver
controller; the LED load
current that can be delivered
is dependent on the external
MOSFET.
The ZXLD1371 with its unique
architecture, utilizing only
one current sense resistor,
can be used as a:
 Buck converter
 Boost converter
 Buck-Boost converter
The ZXLD1371 extends the
minimum input voltage of the
ZXLD1370 down to 5.0V; this
allows it operate at lower
input voltages than the ‘1370’
making it better suited to
applications that are
subjected to large variances
in their input voltages; for
example automotive lighting
and 12V_AC powered systems.
Its 60V maximum input
voltage enables it to
comfortably operate from
48V rails and in Boost mode
can drive LED chain voltages
greater than 60V
The Diodes’ Advantage
The ZXLD1371 provide simple high reliability solution for driving multiple
extremely high brightness LEDs in multiple topologies
 Operates down to 5.0V
Provides wider transient operating voltage range supporting applications that
require this.
 High accuracy LED control: 1% reference tolerance
Better brightness control and matching between lamps
 60V maximum input voltage range
Safely operates from 12V_AC/DC, 24V_AC/DC and 48V rails.
Drives up to 15 LEDs in Buck & in excess of 20 LEDs in series in Boost.
Supports most Load Dump requirements
 Multi-topology device
1 device can be used in buck lighting, boost light and buck-boost lighting apps.
 LED thermal management via external thermistor
Improves reliability of LED lamps.
 Separate 1000:1 PWM dimming capability
Improves dynamic range of dimming at lower light levels.
Applications
 3+W Buck LED Driver
 Daylight Running Lamps
 1W/3W Boost LED Driver
 1W/3W Buck-boost LED
Driver
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