Description
The ZXLD1356 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 60V and provides an externally adjustable output current of up to 550mA. Depending upon supply voltage and external components, this can provide up to 30 watts of output power.

Features
• Typically better than 0.8% output current accuracy
• Simple and with low part count
• Single pin on/off and brightness control using DC voltage or PWM
• PWM resolution up to 1000:1
• High efficiency (up to 97%)
• Wide input voltage range: 6V to 60V
• Inherent open-circuit LED protection
• Available in thermally enhanced packages
   ◾ V-DFN3030-6 θJA 44°C/W
   ◾ TSOT25 θJA 82°C/W
• Available in “Green” Molding Compound (No Br, Sb) with lead Free
   Finish/ RoHS Compliant
   ◾ Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
   ◾ Halogen and Antimony Free. “Green” Device (Note 3)
• ZXLD1356QET5TA Automotive Grade qualified to AEC-Q100 Grade 1

Applications
• Low Voltage Halogen Replacement LEDs
• Automotive Lighting
• Low Voltage Industrial Lighting
• LED Back-Up Lighting
• Illuminated Signs
• Emergency Lighting
• SELV Lighting
• Refrigeration Lights