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A Product Line of
Diodes Incorporated
ZXLD1352
30V 350mA LED DRIVER WITH 1000:1 PWM DIMMING AND AEC-Q100
Description
The ZXLD1352 is a continuous mode inductive step-down
Pin Assignments
converter with integrated switch and high side current sense.
It operates from an input supply from 7V to 30V driving
single and multiple series connected LEDs effciently
externally adjustable output current up to 350mA.
The ZXLD1352 has been qualified to AEC-Q100 Grade
2 allowing it to operate at ambient temperatures from -40 to
105°C.
DC voltage or a PWM waveform. 1000:1 adjustment of
output current is possible using PWM control. 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.
LX
GND
ADJ
TSOT23-5
Top View
V IN
I SENSE
Features
Typical Application Circuit
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Simple low parts count
Single pin on/off and brightness control using DC voltage
D1
ZLLS1000
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or PWM
1000:1 PWM dimming range
High efficiency (up to 95%) *
Wide input voltage range: 7V to 30V
40V transient capability
Up to 1MHz switching frequency
Typical 4% output current accuracy
Qualified to AEC-Q100 Grade 2
V IN
(12V - 30V)
C1
1μF
Rs
0.33
L1 47mH
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Available in Green molding (no Br, Sb) with lead free
finish/RoHS compliant
PW M
V IN
I SENSE
LX
Applications
ADJ
ZXLD1352
GND
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Low voltage halogen replacement LEDs
Automotive lighting
Low voltage industrial lighting
LED back-up lighting
Illuminated signs
GND
* Using standard external components as specified under electrical characteristics. Efficiency is dependent upon the number of LEDs driven and on external
component types and values.
ZXLD1352
Document number: DS33469 Rev. 3 - 2
1 of 21
www.diodes.com
December 2010
? Diodes Incorporated
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