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ZXLD1374 Datasheet(PDF) 1 Page - Diodes Incorporated

Part # ZXLD1374
Description  60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST
PDF  37 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXLD1374 Datasheet(HTML) 1 Page - Diodes Incorporated

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ZXLD1374
60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST
LED DRIVER CONVERTER WITH AEC-Q100
ZXLD1374
Document number: DS35032 Rev. 2 - 2
1 of 37
www.diodes.com
March 2011
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Description
The ZXLD1374 is a 60V LED driver with integrated 1.5A low
side switch to drive high current LEDs. It is a multi-topology
converter enabling it to operate in Buck, Boost and Buck-boost
configurations; efficiently controlling the
current of up to
16 series connected LEDs.
The ZXLD1374 is a modified hysteretic converter using a
patent pending control scheme providing high output current
accuracy in all three topologies. High accuracy dimming is
achieved through DC control and high frequency PWM control.
The ZXLD1374 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.
The ZXLD1374 has been qualified to AEC-Q100 Grade 1
enabling operation in ambient temperatures from -40 to 125°C.
Pin Assignments
TSSOP-20EP
ZXLD1374
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
ADJ
REF
TADJ
SHP
STATUS
SGND
PGND
PGND
N/C
N/C
GI
PWM
FLAG
ISM
VIN
VAUX
LX
LX
N/C
N/C
Thermal
Pad
ZXLD1374
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
ADJ
REF
TADJ
SHP
STATUS
SGND
PGND
PGND
N/C
N/C
GI
PWM
FLAG
ISM
VIN
VAUX
LX
LX
N/C
N/C
Thermal
Pad
Features
• 0.5% typical output current accuracy
• 6.3 to 60V operating voltage range
• 1.5A integrated low side switch
• LED driver supports Buck, Boost and Buck-Boost topologies
• Wide dynamic range dimming
o
20:1 DC dimming
o
1000:1 dimming range at 500Hz
• Up to 1MHz switching
• High temperature control of LED current using TADJ
• AEC-Q100 Grade 1
• Available in “Green” Molding Compound (No Br, Sb) with
lead Free Finish/ RoHS Compliant (Note 1)
Note 1: EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions
applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
Typical Application Circuit


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