Data Sheet Rev. 1.0 / February 2011 ZLED7030 High Current 40V LED Driver with Switch Dimming ZLED7030 High Current 40V LED Driver with Switch Dimming Features Brief Description Switch dimming with multiple levels The ZLED7030 continuous-mode inductive step- Three modes for output level settings down converter is one of our ZLED family of LED- Up to 1.2A output current control ICs. It is designed for applications requiring Internal 40V power switch high brightness and high current. The ZLED7030 can efficiently drive a single LED or multiple Wide DC input voltage range 8.5 to 40 VDC series-connected LEDs from a voltage input higher Output current accuracy: 5% (typical) than the LED forward voltage (Vin = 8.5 to LED open-circuit protection 40VDC). It provides an adjustable output current Thermal shutdown protection (1.2A maximum), which is set via an external resistor and controlled by the ZLED7030s integrated high-side output current-sensing circuit Benefits and high speed internal 40V power switch. Its low conducting impedance ensures high system effi- High efficiency: up to 98% ciency. Very few external components needed for The ZLED7030 provides a switch dimming func- operation tion. It detects external switch action to adjust out- Adds switch dimming function to existing put current, allowing dimming functionality to be installation achieved without changing the original lighting sys- tem circuitry. Available Support The switch dimming is implemented in either two- level mode or three-level mode. The output current Evaluation Kit of every level and the total number of levels are customer selected by setting the corresponding input conditions of DIM1 and DIM2 pin. Physical Characteristics The ZLED7030 enables diverse industrial and Operating temperature: -40C to 105C consumer lighting applications requiring high Switching frequency: up to 1MHz driving currents, wide operating voltage range, SOP-8 package high efficiency, and variable brightness control. It offers over-temperature and LED open-circuit For additional information on our ZLED driver protection. The ZLED7030 can also minimize bill- family, visit www.zmdi.com/products/led-drivers/ 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. ZLED7030 Typical Application Circuit 2011 Zentrum Mikroelektronik Dresden AG Rev. 1.0 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.