A Product Line of
Diodes Incorporated
ZXLD1366
HIGH ACCURACY 1A, 60V LED DRIVER WITH AEC-Q100
Description
The ZXLD1366 is a continuous mode inductive step-down
converter, designed for driving single or multiple series connected
LEDs efficiently from a voltage source higher than the LED voltage.
The device operates from an input supply between 6V and 60V and
provides an externally adjustable output current of up to 1A.
The ZXLD1366 has been qualified to AECQ100 Grade 1 enabling
operation in ambient temperatures from -40°C to +125°C
The ZXLD1366 uses a high-side output current sensing circuit
which uses an external resistor to set the nominal average output
current. The output current can be adjusted above, or below the set
value, by applying an external control signal to the 'ADJ' pin.
Enhanced output current dimming resolution can be achieved by
applying a PWM signal to the ‘ADJ’ pin.
Soft-start can be forced using an external capacitor from the ADJ
pin to ground. Applying a voltage of 0.2V or lower to the ADJ pin
turns the output off and switches the device into a low current
standby state.
Pin Assignments
(TOP VIEW)
LX 1
GND 2
ADJ 3
TSOT25
(TOP VIEW)
LX 1
GND 2
ADJ 3
6 V
IN
5 GND
4 I
SENSE
5 V
IN
4 I
SENSE
V-DFN3030-6
(TOP VIEW)
LX 1
8 V
IN
7 GND
6 GND
5 I
SENSE
SO-8EP
Features
•
•
•
•
•
•
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•
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Typically better than 0.8% output current accuracy
Simple and with low part count
Single pin on/off and brightness control using DC voltage or
PWM
PWM resolution up to 1000:1
High efficiency (up to 97%)
Switching frequencies up to 1MHz
Wide input voltage range: 6V to 60V
Inherent open-circuit LED protection
Available in thermally enhanced Green molding packages
SO-8EP
θ
JA
= +
45°C/W
V-DFN3030-6
θ
JA
= +
44°C/W
TSOT25
θ
JA
=
+
82°C/W
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q100 Grade 1
SO-8EP
ZXLD1366EN8TC
TSOT25
ZXLD1366ET5TA
GND 2
GND 3
ADJ 4
Typical Application Circuit
D1
V
IN
(24V)
Rs
0.2V
•
L1
Applications
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•
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•
•
Notes:
C1
4.7µF
Automotive lighting
Low voltage industrial lighting
LED back-up lighting
Illuminated signs
Emergency lighting
SELV lighting
Refrigeration lights
V
IN
I
SEN SE
LX
100nF
GND
ADJ
ZXLD1366
GND
1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
ZXLD1366
Document number: DS31992 Rev. 7 - 2
1 of 30
May 2012
© Diodes Incorporated
DIODES [ DIODES INCORPORATED ]
