PT5631 Dimming Ballast Controller IC DESCRIPTION PT5631 is a dimming ballast controller, which is available to implement closed loop feedback control of the lamp power. PT5631 has external programmable features, such as preheat time and preheat current. All of these provide a great degree of flexibility for the ballast design engineers. With different connections, PT5631 has the dimming ability with TRIAC, potentiometer or remote controller. And the PT5631 is available in both 16-pin DIP and 16-pin SOP packages. FEATURES • Dimming range: 8%~100% • Provides capacitive mode protection of half-bridge inverter • Over-voltage protection and thermal protection • Programmable preheat time and preheat current (Frequency) • Minimum dimming control • Closed-loop lamp power control APPLICATIONS • All types fluorescent lamps • TRIAC, potentiometer & remote dimmer BLOCK DIAGRAM Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT5631 TYPICAL APPLICATION CIRCUIT 120V/60HZ/32W/T8 V1.4 2 PT5631 ORDER INFORMATION Valid Part Number PT5631-D PT5631-S Package Type 16 Pins, DIP, 300MIL 16 Pins, SOP, 150MIL Top Code PT5631-D PT5631-S PIN CONFIGURATION V1.4 3 PT5631 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 V1.4 4