DN68

www.DataSheet4U.com DN68 ZXSC310 High power torch reference design Description This design note shows a typical ZXSC310 LED driver circuit for a high powered LED torch. The input voltage ranges from 0.7V to 1.6V with a maximum output current of 335mA at 1.4V input. A typical schematic diagram is shown in Figure 1. D1 VIN U1 Vcc L1 Q1 Vdrive C1 Stdn Isense Gnd C2 C3 ZXSC310 R1 Figure 1 Reference Value U1 Q1 D1 L1 R1 C1 C2 C3 2A 7.5␮H 1 ␮F 220␮F 100␮F Part number ZXSC310E5 FMMT617 ZHCS2000 Schematic diagram Comments LED driver in SOT23-5 Low sat. NPN in SOT23 2A Schottky in SOT23 Manufacturer Contact details Zetex Zetex Zetex www.zetex.com www.zetex.com www.zetex.com DO3316P-153x2 Coilcraft Generic Generic Generic Generic Table 1 www.coilcraft.com ISAT = 3A NA NA NA NA 0805 size 19.5m⍀ Generic Generic Generic Generic Bill of materials Issue 2 - July 2006 © Zetex Semiconductors plc 2006 1 www.zetex.com DN68 Figure 2 Performance graphs Europe Zetex GmbH Streitfeldstraße 19 D-81673 München Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 [email protected] Americas Zetex Inc 700 Veterans Memorial Highway Hauppauge, NY 11788 USA Telephone: (1) 631 360 2222 Fax: (1) 631 360 8222 [email protected] Asia Pacific Zetex (Asia Ltd) 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Telephone: (852) 26100 611 Fax: (852) 24250 494 [email protected] Corporate Headquarters Zetex Semiconductors plc Zetex Technology Park, Chadderton Ol...