L6585D

www.DataSheet4U.com 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 Programmable and precise End-of-life protection compliant with all ballast configurations Auto-adjusting half-bridge over-current control Automatic re-lamp 3% oscillator precision 1.2µs dead time PFC over-voltage protection and feedback disconnection Under voltage lock-out SO-20 ■ ■ ■ ■ ■ ■ Applications ■ Electronic ballast Block diagram COMP MULT PFCS Vcc 2.5V + _ E/A INV 1V ZCD OL S 0.7V PFG STARTER Q R LATCH OVP PFSTOP DIS EOL CONTROL Vcc PFSTOP WINDOW COMPARATOR & REF. CTR OL OVP 3.4V DIS 2V 0.8V 2V EOLR 0.8V RELAMP EOLP December 2006 + MULTIPLIER and THD OPTIMIZER LEB 1.7V 17V BOOT UV DETECTION SYNCHRONOUS BOOTSTRAP DIODE _ CHOKE SAT. PWM COMP. HVG DRIVER HSD OUT + _ DEAD TIME DRIVING LOGIC LEVEL SHIFTER LVG DRIVER Vcc LSD GND 1.5V HB STOP LOGIC HBCS 1.9V TIMING MANAGEMENT 4.6 1.5 0.9V Vcc CCO RF OSC EOI Tch Rev 3 1/25 www.st.com 25 Contents L6585D Contents 1 2 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 2.2 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functions . . . ....