zxld1370 Diodes, Inc., zxld1370 Datasheet
zxld1370
Manufacturer Part Number
zxld1370
Description
60v High Accuracy Buck/boost/buck-boost Led Driver Controller
Manufacturer
Diodes, Inc.
Datasheet
1.ZXLD1370.pdf
(33 pages)
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Description
The ZXLD1370 is an LED driver controller IC for driving
external MOSFETs to drive high current LEDs. It is a multi-
topology controller enabling it to efficiently control the current
through series connected LEDs. The multi-topology enables
it to operate in buck, boost and buck-boost configurations.
The 60V capability coupled with its multi-topology capability
enables it to be used in a wide range of applications and
drive in excess of 15 LEDs in series.
The ZXLD1370 is a modified hysteretic controller using a
patent pending control scheme providing high output current
accuracy in all three modes of operation. High accuracy
dimming is achieved through DC control and high frequency
PWM control.
The ZXLD1370 uses two pins for fault diagnosis. A flag
output highlights a fault, while the multi-level status pin gives
further information on the exact fault.
Features
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Typical Application Circuit
ZXLD1370
Document number: DS32165 Rev. 2 - 2
Buck-boost diagram utilizing thermistor and Tadj
0.5% typical output current accuracy
6 to 60V operating voltage range
LED driver supports Buck, Boost and Buck-boost
configurations
Wide dynamic range dimming
Up to 1MHz switching
High temperature control of LED current using T
o 20:1 DC dimming
o 1000:1 dimming range at 500Hz
60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLER
ADJ
www.diodes.com
1 of 33
Pin Assignments
Curve showing LED current vs. T
Diodes Incorporated
A Product Line of
TSSOP-16 EP
© Diodes Incorporated
ZXLD1370
LED
May 2010
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