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The ZXLD1370 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. 

The ZXLD1370 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 ZXLD1370 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. 



  • 0.5% Typical Output Current Accuracy 
  • 6V to 60V Operating Voltage Range 
  • 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 Automotive Grade with AEC-Q100 and TS16949 Certification 
  • Available in “Green” Molding Compound (No Br, Sb) with Lead 
  • Free Finish/ RoHS Compliant 
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device 

Product Specifications

Product Parameters

Qualified to AECQ10x Yes
Automotive Compliant PPAP ZXLD1370Q
Topologies (Buck) Yes
Topologies (Buck-Boost) Yes
Topologies (Boost) Yes
Minimum Input Voltage 6.5 V
Maximum Input Voltage 60 V
Maximum Output Voltage Ext MOSFET V
Maximum LED Current Ext MOSFET A
LED Current Accuracy 2 %
Switching Frequency Maximum 1000 kHz
Dimming (PWM) Yes
Dimming (Analog) Yes
Efficiency 97 %
Operating Temperature Range -40 to 125 °C
Sense Voltage 225 mV
AEC-Q100 Grade 1

Related Content


Technical Documents

Recommended Soldering Techniques
Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
ZXLD1370/1EV4 Digi-Key Electronics 2 10/18/2019 Buy Now United States
ZXLD1370EST16TC Arrow Electronics 161 10/19/2019 Buy Now United States
ZXLD1370EST16TC Arrow Electronics Central EU 2500 10/19/2019 Buy Now Germany
ZXLD1370EST16TC Farnell, An Avnet Company 1205 10/19/2019 Buy Now England
ZXLD1370EST16TC Mouser Electronics Inc. 6471 10/19/2019 Buy Now United States
ZXLD1370EST16TC Digi-Key Electronics 6484 10/18/2019 Buy Now United States
ZXLD1370EST16TC Future Electronics - Europe 5000 10/18/2019 England
ZXLD1370EST16TC Future Electronics - Europe 10 10/18/2019 England
ZXLD1370EST16TC RS Components 5100 10/18/2019 Buy Now England
ZXLD1370EST16TC RS Components Ltd. 5100 10/18/2019 Buy Now Japan
ZXLD1370QESTTC Arrow Electronics Central EU 5000 10/19/2019 Buy Now Germany
ZXLD1370QESTTC Arrow/Components Agent Ltd. 2500 10/19/2019 Buy Now Hong Kong


Product Change Notices

PCN # Issue Date Subject
PCN-2257 2017-02-06 Datasheet Change for High Level Gate Driver Output Voltage Minimum and Typical Values on Select Analog Parts
PCN-2248 2017-02-09 Lead Frame Supplier Change and Datasheet Change for High Level Gate Driver Output Voltage Minimum and Typical Values on Select Analog Automotive Parts