onsemi MC33260
The MC33260 is a controller for Power Factor Correction preconverters meeting international standard requirements in electronic ballast and off--line power conversion applications. Designed to drive a free frequency discontinuous mode, it can also be synchronized and in any case, it features very effective protections that ensure a safe and reliable operation. This circuit is also optimized to offer extremely compact and cost effective PFC solutions.GENERAL FEATURES
● Standard Constant Output Voltage or “Follower Boost” Mode● Switch Mode Operation: Voltage Mode
● Latching PWM for Cycle--by--Cycle On--Time Control
● Constant On--Time Operation That Saves the Use of an Extra Multiplier
● Totem Pole Output Gate Drive
● Undervoltage Lockout with Hysteresis
● Low Startup and Operating Current
● Improved Regulation Block Dynamic Behavior
● Synchronization Capability
● Internally Trimmed Reference Current Source
● These are Pb--Free Devices Safety
FEATURES
● Overvoltage Protection: Output Overvoltage Detection● Undervoltage Protection: Protection Against Open Loop
● Effective Zero Current Detection
● Accurate and Adjustable Maximum On--Time Limitation
● Overcurrent Protection
● ESD Protection on Each Pin D1...D4 R cs Filtering Capacitor Vcontrol ROCP L1 D1 1 2 3 4 CT MC33260 8 VCC 7 6 5 Sync M1 + C1 LOAD (SMPS, Lamp Ballast,...) Ro DIP--8 CONFIGURATION SHOWN Figure 1. Typical Application MARKING DIAGRAMS 8 1 PDIP--8 P SUFFIX CASE 626 M...