DN64 ZXSC310 Solution flashlight Description A solution is provided for flashlight driving 4 white LEDs connected in series from a 2 alkaline cell input. Issue 3 - July 2006 © Zetex Semiconductors plc 2006 Figure 1 Schematic diagram Figure 2 Performance graphs 1 www.zetex.com DN64 Reference Part no. Value Manufacturer Contact details U1 ZXSC310E5 LED driver Zetex www.zetex.com Q1 FMMT618 2.5A, low VCE(sat) Zetex www.zetex.com D1 ZHCS1000 1A, low VF Zetex www.zetex.com L1 LPO2506OB-683 68H, 0.4A Coilcraft www.coilcraft.com R1 Generic 130m⍀ Generic NA C1 Generic 2.2F Generic NA LED1 Learn-4753A White LED LG Innotek www.iginnotek.com Table 1 Bill of materials Europe Americas Asia Pacific Corporate Headquarters Zetex GmbH Streitfeldstraße 19 D-81673 München Germany Zetex Inc 700 Veterans Memorial Highway Hauppauge, NY 11788 USA Zetex (Asia Ltd) 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Zetex Semiconductors plc Zetex Technology Park, Chadderton Oldham, OL9 9LL United Kingdom Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 [email protected] Telephone: (1) 631 360 2222 Fax: (1) 631 360 8222 [email protected] Telephone: (852) 26100 611 Fax: (852) 24250 494 [email protected] Telephone: (44) 161 622 4444 Fax: (44) 161 622 4446 [email protected] For international sales offices visit www.zetex.com/offices Zetex products are distributed worldwide. For details, see www.zetex.com/salesnetwork This publication is issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contact or be regarded as a representation relating to the products or services concerned. The company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. www.zetex.com 2 Issue 3 - July 2006 © Zetex Semiconductors plc 2006