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ZXLD1356DACTC Datasheet(PDF) 2 Page - Diodes Incorporated

Part # ZXLD1356DACTC
Description  60V 550mA LED DRIVER and AUTOMOTIVE GRADE
PDF  29 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXLD1356DACTC Datasheet(HTML) 2 Page - Diodes Incorporated

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ZXLD1356/ ZXLD1356Q
Document number: DS33470 Rev. 4 - 2
2 of 29
www.diodes.com
October 2012
© Diodes Incorporated
ZXLD1356/ ZXLD1356Q
A Product Line of
Diodes Incorporated
Typical Applications Circuit
 
VIN
ISENSE
LX
GND
ZXLD1356
ADJ
VIN (24V)
Rs
0.36V
4.7µF
C1
GND
100nF
D1
L1
Pin Descriptions
Pin
Name
Pin
Number
Function
TSOT25
V-DFN3030-6
LX
1
1
Drain of NDMOS switch
GND
2
2, 5
Ground (0V)
ADJ
3
3
Multi-function On/Off and brightness control pin:
•
Leave floating for normal operation.(VADJ = VREF = 1.25V giving nominal average output
current
o
IOUTnom = 0.2V/RS)
•
Drive to voltage below 0.2V to turn off output current
•
Drive with DC voltage (0.3V<VADJ<2.5V) to adjust output current from 24% to 200% of
IOUTnom
•
Connect a capacitor from this pin to ground to define soft-start time.
Soft-start time is approx.0.2ms/nF
ISENSE
4
4
Connect resistor RS from this to VIN to define nominal average output current IOUTnom = 0.2/RS
(Note: RSMIN=0.36V with ADJ pin open circuit)
VIN
5
6
Input voltage (6V to 60V). Decouple to ground with 4.7µF of higher X7R ceramic capacitor close
to device
Pad
—
Pad
Exposed pad (EP) - connected to device substrate.
To improve thermal impedance of package the EP must be connected to power ground but
should not be used as the 0V (GND) current path.
It can be left floating but must not be connected to any other voltage other than 0V.



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