High Current 40V LED Driver with Internal Switch

The ZLED7020 continuous-mode inductive step-down converter is part of our ZLED7x20 family of LED-control ICs. It is designed for applications requiring high brightness and high current. It can efficiently drive a single LED or multiple series-connected LEDs from a voltage input higher than the LED forward voltage: Vin = 6 to 40 VDC. It provides an adjustable output current ≤1.2A, which is set via an external resistor and controlled by the ZLED7020's integrated high-side output current-sensing circuit and high speed internal 40V power switch. An external control signal on the ADJ pin, which can be a DC voltage, PWM, or microcontroller-generated waveform, can also be used to linearly adjust a continuous output current or to control a gated output current. The output can be turned off by applying a voltage lower than 0.2V to the ADJ pin, which puts the ZLED7020 in a low-current standby state. The ZLED7020 enables diverse industrial and consumer lighting applications requiring high driving currents, wide operating voltage range, high efficiency, and variable brightness control. It offers over-temperature and LED open-circuit protection. The ZLED7020 can also minimize bill-of-material costs because very few external components are required for most applications. Only a resistor, a diode, an inductor, and three capacitors are needed for a typical basic application.

Features

  • Up to 1.2A output current
  • Internal 40V power switch
  • Wide DC input voltage range: 6 to 40 VDC
  • Output current accuracy: 3% (typical)
  • Dimming ratio: 1200:1
  • LED open-circuit protection
  • Thermal shutdown protection

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
ZLED7020ZI1R Active DZG5 SOT 5 -40 to 85°C Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZLED7x20 Short-form Datasheet - Short Form Datasheet PDF 78 KB Apr 19, 2016
ZLED7x20 Datasheet - Datasheet PDF 549 KB Apr 19, 2016
Application Notes & White Papers
ZLED7000 / ZLED7020 Application Note - Buck Converter LED Driver Applications - Application Note PDF 138 KB Apr 20, 2016
Other
IDT CAD Altium Libraries for AID Products Rev 20160819 - PCB Design Files ZIP 1.20 MB Aug 18, 2016

Evaluation Boards