PT5623 Linear Dimming(on/off) Ballast Controller DESCRIPTION The PT5623 is an electronic ballast controller IC intended for linear dimming product with ordinary switch. The features of the controller IC include closed-loop dimming control of the lamp current, programmable preheat time and preheat frequency, end-of-life protection, low start-up current, precise oscillating frequency, integrated 650V high side half-bridge driver and easy applications. PT5623 is available in both DIP16/SOP16 packages. APPLICATION • Adjustable to various types of fluorescent lamps/CFLs BLOCK DIAGRAM FEATURES • Linear dimming electronic ballast IC with ordinary switches • Integrated MCU • Closed-loop dimming control of the lamp current, supporting low luminance ignition • Programmable preheat time • Programmable preheat frequency, sweeping frequency ignition • Programmable delay time from switch-off to reset state • Programmable initial luminance (the lowest luminance) • Fixed dead time • End-of-life protection • Integrated 650V high side half-bridge driver • Supporting DIP16/SOP16 packages Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT5623 TYPICAL APPLICATION CIRCUIT AC: 220V/50Hz, OUTPUT POWER 3W~25W V1.0 2 August 2010 PT5623 ORDER INFORMATION Valid Part Number PT5623-D PT5623-S Package Type 16 Pins, DIP, 300mil 16 Pins, SOP, 150mil Top Code PT5623-D PT5623-S PIN CONFIGURATION PIN DISCRIPTION Pin Name VDD GND VREG1 RF RP LS CP IL CT RT EOL ACD LO VS HO VB V1.0 Description Power supply, operating voltage is 13.0V Controller ground Standby power supply for internal MCU when the AC power supply is switched off Internal reference current bias setting pin, its voltage is fixed at 3.2V. An external resistor is connected from this pin to GND to determine the internal reference current, typical value is 68K Preheat frequency setting pin, its output current is 29µA. An external resistor is connected to this pin and introduces a voltage for VCO Initial luminance (the lowest luminance) setting pin, its output current is12uA. An external resistor is connected to this pin and introduces a voltage for MCU Preheat time and sweeping frequency ignition setting pin Lamp current sensing pin An external capacitor is connected to this pin to determine oscillating frequency An external resistor is connected to this pin to determine oscillating frequency End-of-life sensing input pin AC input signal sensing pin Low-side gate driver output High-side floating supply return High-side gate driver output High-side gate driver floating supply 3 Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 August 2010 PT5623 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.0 4 August 2010