CS1600

CS1600 www.DataSheet4U.com Low-cost PFC Controller for Electronic Ballasts Features & Description  Lowest PFC System Cost for Electronic Ballasts  Variable Frequency Discontinuous Conduction Mode  Improved Efficiency Due to Variable Switching Frequency  EMI Signature Reduction from Digital Noise Shaping  Integrated Feedback Compensation  Overvoltage Protection with Hysteresis  Overpower Protection with Shutdown  UVLO with Wide Hysteresis  Thermal Shutdown with Hysteresis Description CS1600 is a high-performance Variable Frequency Discontinuous Conduction Mode (VF - DCM), active Power Factor Correction (PFC) controller, optimized to deliver the lowest PFC system cost for electronic ballast applications. A variable ON time / variable frequency algorithm is used to achieve near unity power factor. This algorithm spreads the EMI frequency spectrum, which reduces the conducted EMI filtering requirements. The feedback loop is closed through an integrated compensation network within the IC, eliminating the need for additional external components. Protection features such as overvoltage, overcurrent, overpower, open- and short-circuit protection, overtemperature, and brownout help protect the device during abnormal transient conditions. Pin Assignments NC STBY IAC FB 1 2 3 4 8 7 6 5 NC VDD GD GND 8-lead SOIC D5 L1 RAC D6 RFB R1a BR1 BR1 R1b R2a CS1600 1 NC IAC VDD NC STBY FB GD GND 2 R2b C3a Clink R2c 4 C3b 6 5 R3 Q1 AC Mains C1 R1c 3 +12V 7 C2 8 BR1 BR1 Advan...