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The ZXLD1374 is a 60V LED driver with integrated 1.5A low side switch to drive high current LEDs. It is a multi-topology converter enabling it to operate in Buck, Boost and Buck-boost configurations; efficiently controlling the current of up to 16-series connected LEDs. 

The ZXLD1374 is a modified hysteretic converter using a patent pending control scheme providing high output current accuracy in all three topologies. High accuracy dimming is achieved through DC control and high frequency PWM control. 

The ZXLD1374 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 ZXLD1374 has been qualified to AEC-Q100 Grade 1 enabling operation in ambient temperatures from -40 to +125°C. 



  • 0.5% Typical Output Current Accuracy 
  • 6.3 to 60V Operating Voltage Range 
  • 1.5A Integrated Low Side Switch 
  • LED Driver Supports Buck, Boost and Buck-Boost Topologies 
  • 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 
  • AEC-Q100 Grade 1 
  • TSSOP-20EP: 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 ZXLD1374Q
Topologies (Buck) Yes
Topologies (Buck-Boost) Yes
Topologies (Boost) Yes
Minimum Input Voltage 6.5 V
Maximum Input Voltage 60 V
Maximum Output Voltage 60 V
Maximum LED Current 1.5 A
LED Current Accuracy 2 %
Switching Frequency Maximum 1000 kHz
Dimming (PWM) Yes
Dimming (Analog) Yes
Efficiency 95 %
Operating Temperature Range -40 to 125 °C
Sense Voltage 225 mV
AEC-Q100 Grade 1

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Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
ZXLD1374EST20TC Arrow Electronics 2443 7/8/2020 Buy Now United States
ZXLD1374EST20TC Arrow Electronics Central EU 5000 7/8/2020 Buy Now Germany
ZXLD1374EST20TC Mouser Electronics Inc. 2655 7/8/2020 Buy Now United States
ZXLD1374EST20TC RS Components 7045 7/8/2020 Buy Now England
ZXLD1374EST20TC Digi-Key Electronics 4947 7/7/2020 Buy Now United States
ZXLD1374EST20TC Future Electronics - Europe 7500 7/7/2020 England
ZXLD1374EST20TC RS Components Ltd. 7045 7/7/2020 Buy Now Japan
ZXLD1374QESTTC Arrow Electronics Central EU 2500 7/8/2020 Buy Now Germany
ZXLD1374QESTTC Mouser Electronics Inc. 2483 7/8/2020 Buy Now United States
ZXLD1374QEV1 Digi-Key Electronics 1 7/7/2020 Buy Now United States