ZXLD1370Q Datasheet, PDF (1/37 Pages) Diodes Incorporated – AUTOMOTIVE COMPLIANT 60V HIGH ACCURACY

ZXLD1370Q
AUTOMOTIVE COMPLIANT 60V HIGH ACCURACY BUCK/
BOOST/BUCK-BOOST LED DRIVER-CONTROLLER
Description
The ZXLD1370Q is an LED driver controller IC for driving external
MOSFETs to drive high current LEDs. It is a multi-topology controller
enabling it to efficiently control the current through series connected
LEDs. The multi-topology enables it to operate in buck, boost and
buck-boost configurations.
The 60V capability coupled with its multi-topology capability enables it
to be used in a wide range of applications and drive in excess of
15 LEDs in series.
Pin Assignments
TSSOP-16EP
The ZXLD1370Q is a modified hysteretic controller using a patent
pending control scheme providing high output current accuracy in all
three modes of operation. High-accuracy dimming is achieved
through DC control and high frequency PWM control.
The ZXLD1370Q uses two pins for fault diagnosis. A flag output
highlights a fault, while the multi-level status pin gives further
information on the exact fault.
The ZXLD1370Q has been qualified to AEC-Q100 Grade 1 and is
automotive grade supporting PPAPs.
Features
Typical Applications Circuit
 0.5% Typical Output Current Accuracy
VIN 8V
 6V to 60V Operating Voltage Range
to 18V
I LED = 1A
 LED Driver Supports Buck, Boost and Buck-Boost Configurations
 Wide Dynamic Range Dimming
 20:1 DC Dimming
 1000:1 Dimming Range at 500Hz
 Up to 1MHz Switching
 High Temperature Control of LED Current Using TADJ
 Available in Thermally Enhanced TSSOP-16EP Package with
Green Molding Compound
C1
4.7µF
RGI2
62k
R1
0R1
L1
33mH
VAUX VIN
ISM
PWM
LED 1
to 4
GI
SD1
PSD3100
ADJ
GATE
Q1
REF
FLAG
DMN6068LK3
COUT
4.7µF
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)
 Automotive Compliant
 Qualified to AEC-Q100 Grade 1 and TS16949 Certification
 Supports PPAP Documents (Note 4)
R4
RGI1 2k
51k
TH1
10k
GND
TADJ
SHP
C2
100pF
STATUS
SGND PGND
U1
ZXLD1370
Thermally connected
Buck-Boost Diagram Utilizing Thermistor and TADJ
Notes: 1.
2.
3.
4.
No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Automotive products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally the
same, except where specified. For more information, please refer to http://www.diodes.com/quality/product_compliance_definitions/.
ZXLD1370Q
Document number: DS37117 Rev. 1 - 2
1 of 37
www.diodes.com
August 2015
© Diodes Incorporated