PT5615 Ballast Control IC DESCRIPTION The PT5615 is a ballast control IC, with the 650V half-bridge driver and full protections, designed to drive all types of fluorescent lamps. The features such as programmable preheat time and frequency, programmable and precise run frequency, self-adapting ignition time regulator and auto-restart for lamp replacement, provide a high degree of flexibility for the ballast design engineers. The protection features include the filaments detection, ignition failure and end-of-life protection for lamp and the over-current protection for half bridge. It is easy to provide a protection for multi-lamp application. The PT5615 is available in both DIP16 and SOP16 packages. FEATURES • • • • • • • • • • • • 650V half-bridge driver Programmable and precise oscillator Programmable preheat time and frequency Sweeping-frequency ignition Fixed dead time Self-adapting ignition time regulator Ignition failure protection End-of-life protection Programmable half-bridge over-current protection Low side and high side filaments detection Auto-restart for lamp replacement Support multi-lamp design APPLICATION • Electronic ballast for all types of fluorescent lamps BLOCK DIAGRAM Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT5615 TYPICAL APPLICATION STATE DIAGRAM V1.0 2 August 2010 PT5615 ORDER INFORMATION Valid Part Number PT5615-S PT5615-D Package Type 16 Pins, SOP, 150mil 16 Pins, DIP, 300mil Top Code PT5615-S PT5615-D PIN DESCRIPTION PIN DESCRIPTION Pin Name VDD GND SD RF RP CP CT RT EOL1 EOL2 HSFL CS LO VS HO VB V1.0 Description IC power supply System ground Low side filament sensing and shut-down control Internal current bias control, connecting a external resistor (68K, typ.) to GND Preheat frequent setting Preheat time setting Capacitor of the RC oscillator Resistor of the RC oscillator End-of-life sensing for Lamp1 End-of-life sensing for Lamp2 High side filament sensing Half-bridge current sensing Low side gate driver High side driver floating ground High side gate driver High side driver floating supply 3 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 August 2010 PT5615 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