ZXLD1374_V1 Datasheet, PDF (1/2 Pages) Diodes Incorporated – Versatile LED driver increases reliability of high brightness lamps

NPA Number 001
New Product
Announcement
ZXLD1374
Versatile LED driver increases
reliability of high brightness lamps
The ZXLD1374 is a high
accuracy 1.5A LED driver
that can be used as a
ƒ Buck converter
ƒ Boost converter
ƒ Buck-Boost converter.
The device can drive up to
16 LEDs in series from a
voltage source of 6.5V to
60V. Series connection of
the LED provides identical
LED currents resulting in
uniform brightness and
eliminates the need for
ballast resistors.
The ZXLD1374 switches
at frequencies up to
1MHz, which allows the
use of small size external
components. This coupled
with small footprint
TSSOP-20EP reduces the
required PCB area.
The Diodes advantage
The ZXLD1374 provide simple high reliability solution for
driving multiple extremely high brightness LEDs in multiple
topologies
ƒ High accuracy LED control: 1% reference tolerance
Better brightness control and matching between lamps
ƒ Multi-topology device
1 device can be used in buck lighting, boost light and buck-boost
lighting apps
ƒ LED thermal management via external thermistor
Improves reliability of LED lamps
ƒ Separate 1000:1 PWM dimming capability
Improves dynamic range of dimming at lower light levels
ƒ Switching frequency up to 1MHz
Reduces value of inductor reducing size of solution
ƒ Two- pin diagnostic feedback pins
Reports back to system the state of LED driver and load can be used
to increase reliability of overall system
Circuit functions
ƒ Buck driving of 3W and 1W
LEDs
ƒ Constant Current Source
ƒ Boost and Buck-boost
driving of 1W LEDs
www.diodes.com