High Current 40V LED Driver with Switch Dimming

The ZLED7030 continuous-mode inductive step-down converter is part of our ZLED7x30 family of LED-control ICs. It is designed for applications requiring high brightness and high current. The ZLED7030 can efficiently drive a single LED or multiple series-connected LEDs from a voltage input higher than the LED forward voltage (Vin = 8.5 to 40VDC). It provides an adjustable output current (1.2A maximum), which is set via an external resistor and controlled by the ZLED7030's integrated high-side output current-sensing circuit and high-speed internal 40V power switch. Its low conducting impedance ensures high system efficiency. The ZLED7030 provides a switch dimming function. It detects external switch action to adjust output current, allowing dimming functionality to be achieved without changing the original lighting system circuitry. The switch dimming is implemented in either two-level mode or three-level mode. The output current of every level and the total number of levels are customer selected by setting the corresponding input conditions of the DIM1 and DIM2 pins. The ZLED7030 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 ZLED7030 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

  • Switch dimming with multiple levels
  • Three modes for output level settings
  • Up to 1.2A output current
  • Internal 40V power switch
  • Wide DC input voltage range 8.5 to 40 VDC
  • Output current accuracy: 5% (typical)
  • LED open-circuit protection
  • Thermal shutdown protection
  • High efficiency: up to 98%
  • Very few external components needed for operation
  • Adds switch dimming function to existing installation

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
ZLED7030ZI1R Obsolete DCG8 SOIC 8 Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZLED7x30 Short-form Datasheet Short Form Datasheet PDF 81 KB Apr 19, 2016
ZLED7x30 Datasheet Datasheet PDF 609 KB Apr 19, 2016
PCNs & PDNs
PDN-2017-005-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 106 KB Jun 29, 2017
Other
IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 18, 2016

Evaluation Boards