IMP3522D

ISO 9001 Registered IMP3522D ADAPTIVE BALLAST CONTROL IC General Description The IMP3522D(S) is a complete adaptive ballast controller, 450V half-bridge driver and power MOS FET integrated into a single IC for Compact Fluorescent Lamps (CFL) applications. The IC includes adaptive zero-voltage switching (ZVS), internal crest factor over-current protection, as well as an integrated bootstrap FET. The heart of this IC is a voltage controlled oscillator with externally programmable minimum frequency. All of the necessary ballast features are integrated in a small 8-pin DIP package. Key Features -450V Half Bridge Driver -Integrated Bootstrap FET -Integrated Power MOS FET -Adaptive zero-voltage switching (ZVS) -Internal Crest Factor Over-Current Protection -0 to 6VDC Voltage Controlled Oscillator -Programmable minimum frequency -Micropower Startup Current (80uA) -Internal 15.6V zener clamp on VDD -Small DIP8 Package -Also available LEAD-FREE (PbF) Typical Application BR1 F1 LF L1 CF L2 RSUPPLY CBUS VDD CVDD GND RMIN RRMIN VCO CVCO IMPIM32P2305D22D DCP2 SPIRAL CFL VB VDC OUT CBO LRES PGND CDC CSNUB CRES DCP1 Daily Silver IMP www.ds-imp.com.cn 1 ISO 9001 Registered IMP3522D ADAPTIVE BALLAST CONTROL IC Block Diagram Pin Assignments Pin # 1 2 3 4 5 6 7 8 Name PGND OUT VDC VB VDD GND RMIN VCO Daily Silver IMP Description Power ground Half bridge output High-voltage supply High-side floating supply Supply voltage Signal ground Oscillator frequency set resist...