STEVAL-ILL049V12 LED driver based on the LED6001 + 9-LED board with NTC sensor Data brief Description Features • • • • • • • • Wide DC input voltage: 6 V-24 V Single channel, 350 mA constant-current output with PWM brightness control Up to 10 high-brightness white LEDs (40 V OVP threshold) Selectable boost or SEPIC converter topology Up to 92% efficiency (boost converter) Onboard photo-transistor for ambient light switch function LED temperature protection through analog dimming control RoHS compliant July 2014 The purpose of this product evaluation board is to provide an application example of a compact LED driver using the new LED6001 chip from STMicroelectronics. The board is equipped with a single-channel, constant-current LED driver operating with both boost and SEPIC topologies.The brightness of the LED string connected to its output can be controlled through a PWM signal (0%-100% dimming) or a control voltage (10:1 analog dimming).Open LED, feedback disconnection, LED overcurrent and output-to-ground short-circuit (SEPIC only) faults are detected and managed.The board has been designed to provide a solution example for applications involving several LEDs arranged is a single string (e.g. off-grid street lighting, advertisement panels, signs, gaming, etc.). DocID025872 Rev 1 For further information contact your local STMicroelectronics sales office 1/4 www.st.com PW M XFAULT GND 1 1 1mm TP6 1 1 +VIN 2 1k R16 D5 LED R15 470k XFAULT SIL3 JP5 C9 1u COMP 10u C1 D3 BZT52C4V3 0 C10 47n R14 560R C11 100p R10 8k2 ADIM XFAULT PWMI R9 82k LDO3 C7 1u COMP ADIM XFAULT PWMI FSW LDO3 PWMI LDO3 6 7 3 1 2 4 U1 1 2 14 VIN 1 0 GND ADIM 1 VDR PGND CSNS GATE OVFB VFBN VFBP LED6001 JP3 15 16 1 10u C12 ADIM R13 1M LDO3 13 11 9 12 8 0 C8 1u R7 1k8 G R6 0R1 SFH3710-3/4 Q3 JP4 SIL2 D4 BAT54J 4 Q1 STS5NF60L R5 3R3 1 8 7 6 5 R12 N.M. NTC R11 22k S1 D4 S2 D3 S3 D2 D1 1 2 3 +VIN 1 DocID025872 Rev 1 3 SGND 5 TPAD 17 PWMO 10 C13 N.M. R19 N.M. +VIN 0 NTC LED_K LED_A D2 2 4 C5 2 1 3 4u7 1 2 3 4 2 J1 JP1 J1 1 2 3 4 RT1 47k STPS2L60A D1 560 560 3 R18 R17 L1 MSD1278-473 1 JP2 BAS70J 1 2/4 3 1 2 10u C2 D7 D4 D1 R8 5R6 R2 6k8 R1 220k JP6 D8 D5 D2 JP1 10u C3 1 LED_K 1u C6 R4 2R0 D9 D6 D3 Q2 IRLML0060TRPBF 10u C4 R3 1R5 LED_A VOUT 1 1 JP2 LED_K LED_A 1 2 Schematic diagram STEVAL-ILL049V12 Schematic diagram Figure 1: Circuit schematic GSPG30012014DI1455 STEVAL-ILL049V12 2 Revision history Revision history Table 1: Document revision history Data Revision 29-Jul-2014 1 DocID025872 Rev 1 Changes Initial release 3/4 STEVAL-ILL049V12 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2014 STMicroelectronics – All rights reserved 4/4 DocID025872 Rev 1