
A Product Line of
Diodes Incorporated
ZXLD1350
30V 350mA LED DRIVER with AEC-Q100
Description
The ZXLD1350 is a hysteretic 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
or multiple series connected LEDs efficiently external
adjustable output current up to 350mA.
The ZXLD1350 has been qualified to AECQ100 grade 2
allowing it to operate at ambient temperatures from -40 to
105°C.
The output current can be adjusted by applying a DC voltage
or a PWM waveform. 100:1 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
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Internal 30V NDMOS switch
Internal PWM filter
High efficiency (up to 95% (Note 1)
V IN
7~30V
R S
0.33 Ω
L1
47μH
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Wide input voltage range: 7V to 30V
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40V transient capability
Up to 1MHz switching frequency
V IN
SET
LX
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Typical 4% output current accuracy
Qualified to AEC-Q100 Grade 2
C1
1μF
ADJ
ZXLD1350
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Available in “Green” Molding Compound (No Br, Sb)
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Lead Free Finish/ RoHS Compliant (Note 2)
GND
GND
Notes:
1.
2.
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.
EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at:
http://www.diodes.com/products/lead_free.html
ZXLD1350
Document number: DS33468 Rev. 8 - 2
1 of 22
www.diodes.com
March 2011
? Diodes Incorporated