PT5634 Power Factor Correction Control IC DESCRIPTION The PT5634 is a Power Factor Correction control IC for electronic ballast and switching mode power supply application. With a wide bandwidth error amplifier and a wide linear operating range multiplier, the PT5634 is available to operate in Critical Conduction Mode and implement a high PF and excellent THD in wide input voltage application. Furthermore, PT5634 provides a low start-up current and operating current, a precise over-voltage protection and the disable function. FEATURES • • • • • • • Critical Conduction Mode (CRM) control Very low start-up current (30μA) Precise reference voltage (±1%) Precise adjustable output over-voltage protection Restart timer Leading edge blocking time Disable function APPLICATIONS • • Electronic ballast AC-DC adaptor and switching mode power supply BLOCK DIAGRAM Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT5634 TYPICAL APPLICATION V1.0 2 May 2012 PT5634 ORDER INFORMATION Valid Part Number PT5634-S Package Type 8 Pins, SOP, 150mil Top Code PT5634-S PIN CONFIGURATION PIN DESCRIPTION Pin Name INV COMP MULT CS ZCD GND GD VCC V1.0 Description Error amplifier inverting input Error amplifier compensation Multiplier input Current sense Zero current detection System ground Gate driver output IC power supply 3 Pin No. 1 2 3 4 5 6 7 8 May 2012 PT5634 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 9 May 2012