Diodes ZXLD1356/ ZXLD1356Q - Manual

ZXLD1356/ ZXLD1356Q
Document number: DS33470 Rev. 4 - 2
1 of 29
www.diodes.com
October 2012
© Diodes Incorporated
ZXLD1356/ ZXLD1356Q
A Product Line of
Diodes Incorporated
60V 550mA LED DRIVER and AUTOMOTIVE GRADE
Description
The ZXLD1356 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 550mA. Depending upon supply
voltage and external components, this can provide up to 30 watts of
output power.
The ZXLD1356 has been qualified to AECQ100 Grade 1 enabling
operation in ambient temperatures from -40°C to +125°C
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 can be achieved by applying a PWM signal to the ‘ADJ’
pin.
Features
• 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%)
• Wide input voltage range: 6V to 60V
• Inherent open-circuit LED protection
• Available in thermally enhanced packages
ƒ V-DFN3030-6 θ
JA
44°C/W
ƒ TSOT25 θ
JA
82°C/W
• Available in “Green” Molding Compound (No Br, Sb) with lead Free
Finish/ RoHS Compliant
ƒ
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
ƒ Halogen and Antimony Free. “Green” Device (Note 3)
• ZXLD1356QET5TA Automotive Grade qualified to AEC-Q100
Grade 1
Pin Assignments
(TOP VIEW)
TSOT25
I
SENSE
V
IN
2
1
3 4
5
ADJ
GND
LX
1
2
3 4
5
6
V-DFN3030-6
(TOP VIEW)
LX
GND
ADJ
V
IN
I
SENSE
GND
Applications
• Low Voltage Halogen Replacement LEDs
• Automotive
Lighting
• Low Voltage Industrial Lighting
• LED Back-Up Lighting
• Illuminated
Signs
• Emergency Lighting
• SELV
Lighting
• Refrigeration
Lights
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
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.