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L6567 Datasheet(PDF) 1 Page - STMicroelectronics |
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L6567 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 15 page 1/15 L6567 January 2000 This is preliminary information on a new product now in development. Details are subject to change without notice. n BCD-OFF LINE TECHNOLOGY n FLOATING SUPPLY VOLTAGE UP TO 570V n GND REFERRED SUPPLY VOLTAGE UP TO 18V n UNDER VOLTAGE LOCK OUT n CLAMPING ON Vs n DRIVER CURRENT CAPABILITY: 30mA SOURCE 70mA SINK n PREHEAT AND FREQUENCY SHIFT TIMING DESCRIPTION The device is a monolithic high voltage integrated cir- cuit designed to drive CFL and small TL lamps with a minimum part count. It provides all the necessary functions for proper pre- heat, ignition and steady state operation of the lamp: ♦ variable frequency oscillator; ♦ settable preheating and ignition time; ♦ capacitive mode protection; ♦ lamp power independent from mains voltage variation. Besides the control functions, the IC provides the lev- el shift and drive function for two external power MOS FETs in a half-bridge topology. SO14 DIP14 ORDERING NUMBERS: L6567D L6567 HIGH VOLTAGE DRIVER FOR CFL BLOCK DIAGRAM L FEED FORWARD VCO + FREQ. SHIFTING VOLTAGE REFERENCE BIAS CURRENT GENERATOR C S C f C i CI CF V S to comp. 14 12 5 13 PREHEATING TIMING LOGIC RHV Rhv Vhv Cp/Cav C 10 11 8 CP LEVEL SHIFTING HIGH SIDE DRIVER VS F S G1 S1 1 2 3 LOW SIDE DRIVER T1 6 7 9 Vhv Chv Chv MAINS T2 Rshunt G2 PGND RS RREF Ref D96IN441B Lamp CL SGND MULTIPOWER BCD TECHNOLOGY |
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