STEVAL-ILB008V1 4 x 18 W wide-range ballast based on the L6585DE combo IC Data brief Features ■ Input voltage: 90 to 265 V RMS ■ Line frequency: 50/60 Hz ) s ■ Capable of driving 4 x 18 W T8-type tubes ( t ■ Power factor: > 0.98 c u ■ THD: 10% d o ■ Average efficiency: 90% r P ■ EN55015 compliant e ■ End-of-life detection t e ■ Broken lamp protection with adjustable timing l o ■ RoHS compliant s STEVAL-ILB008V1 b O Description - The STEVAL-ILB008V1 is a wide-range ligh)ting s ballast capable of driving 4 x 18 W linea(r T8 t fluorescent tubes. c u The ballast is controlled by thed L6585DE IC, o which integrates PFC and half-bridge control r circuits, relevant drivePrs, and the circuitry required to manage all lam p operating phases (pre- e heating, ignititon and run mode). Protection e against failures such as lamp disconnection, anti- l o capacitive mode, and PFC overvoltage are s gubaranteed and achieved using a minimum O number of external components. An electronic ballast consumes less power and therefore dissipates less heat than an electromagnetic ballast. The energy saved is estimated to be in the range of 20-25% for a given lamp power. Moreover, an electronic solution allows for improved control of the filament current and lamp voltage during pre-heating, resulting in increased lamp life. February 2011 Doc ID 16991 Rev 2 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4

Schematic diagram STEVAL-ILB008V1 1 Schematic diagram Figure 1. Electrical schematic - 4 x 18 W T8 main wide range ) s ( t c u d o r P e t e l o s b O - ) s ( t c u d o r P e t e l o s b O 2/4 Doc ID 16991 Rev 2

STEVAL-ILB008V1 Revision history 2 Revision history Table 1. Document revision history Date Revision Changes 20-Jan-2010 1 Initial release. Modified Figure1: Electrical schematic - 4 x 18 W T8 main wide 25-Feb-2011 2 range. ) s ( t c u d o r P e t e l o s b O - ) s ( t c u d o r P e t e l o s b O Doc ID 16991 Rev 2 3/4

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