L6585DTR STMicroelectronics

++ L6585D Combo IC for PFC and ballast control Features Pre-heating and ignition phases independently programmable Ignition voltage control Transition mode PFC with over-current protection SO-20 Programmable and precise End-of-life protection compliant with all ballast configurations Applications Auto-adjusting half-bridge over-current control Automatic re-lamp Electronic ballast 3% oscillator precision 1.2 s dead time PFC over-voltage protection and feedback disconnection Under voltage lock-out Figure 1. Block diagram CCOOMPMP MUMULLTT PPFFCCSS VccVcc 2.52.5VV E/E/AA ++ MUMULLTTIIPPLLIIEERR LELEBB 1.1.7V7V BOBOOOTT anand Td THHDD 17V17V ININVV OPOPTIMTIMIIZEZERR HVHVGG UVUV HSHSDD DRDRIIVVEERR SYNSYNCHCHRORONOUNOUSS DEDETTEECCTTIIOONN PWPWMM BOBOOTOTSTRSTRAAP DP DIIODODEE COCOMMPP.. 1.1.2V2V OLOL CHCHOOKKEE OUOUTT SASATT.. DDEADEAD LELEVVEELL ZCZCDD TITIMMEE SHSHIIFFTTEERR VcVccc DDRRIVIVININGG SS RR STSTARARTTEERR QQ LALATTCCHH LLVVGG D DRRIIVERVER LLOGICOGIC 0.0.77VV LSLSDD VcVccc OVOVPP COCONTNTROROLL 1.1.6V6V PFPFSTSTOOPP PFPFGG GNGNDD WWIINDONDOWW PFPFSSTTOOPP HBHB S STTOOPP DIDISS LLOGICOGIC CCOOMMPPARARATATOROR EOEOLL CTCTRR & R& REEFF.. OLOL HBHBCCSS OVOVPP 0.0.9V9V 1.1.99VV TIMTIMIINNGG 3.3.4V4V DIDISS MMAANANAGGEEMMEENTNT VccVcc 2V2V 2V2V 4.4.66 0.0.7755VV 1.1.55 VCVCOO EOEOLLRR RERELLAAMMPP 4.4.6633VV EOEOLLPP RFRF OSOSCC EEOIOI TcTchh May 2007 Rev 5 1/25 www.st.com 25 ++Contents L6585D Contents 1 Device description 3 2 Pin settings 4 2.1 Connection . 4 2.2 Functions 5 3 Electrical data 7 3.1 Maximum ratings 7 3.2 Thermal data . 7 4 Electrical characteristics . 8 5 Application information . 12 5.1 Start-up sequence 12 5.1.1 Pre-heating (time interval A Figure 5) 12 5.1.2 Ignition (time interval B Figure 5) 13 5.1.3 Run mode (time interval C Figure 5) . 14 6 End of life window comparator 15 7 Half-bridge current control . 17 8 CTR 18 9 Relamp 19 10 Package mechanical data 21 11 Order codes . 23 12 Revision history . 24 2/25