MC33262P

Product Summary

The MC33262P is an active power factor controller specifically designed for use as a preconverter in electronic ballast and in off-line power converter applications. The MC33262P features an internal startup timer for stand-alone applications, a one quadrant multiplier for near unity power factor, zero current detector to ensure critical conduction operation, transconductance error amplifier, quickstart circuit for enhanced startup, trimmed internal bandgap reference, current sensing comparator, and a totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of an overvoltage comparator to eliminate runaway output voltage due to load removal, input undervoltage lockout with hysteresis, cycle-by-cycle current limiting, multiplier output clamp that limits maximum peak switch current, an RS latch for single pulse metering, and a drive output high state clamp for MOSFET gate protection. The MC33262P is available in dual-in-line and surface mount plastic packages.

Parametrics

MC33262P absolute maximum ratings: (1)Total Power Supply and Zener Current (ICC + IZ): 30 mA; (2)Output Current, Source or Sink IO: 500 mA; (3)Current Sense, Multiplier, and Voltage Feedback Inputs Vin: -1.0 to +10 V; (4)Zero Current Detect Input Iin: -10 to 50mA; (5)Maximum Power Dissipation @ TA = 70℃ PD: 800 mW; (6)Thermal Resistance, Junction-to-Air RθJA: 100℃/W; (7)Operating Junction Temperature TJ: +150 ℃; (8)Operating Ambient Temperature TA: -40 to +105℃; (9)Storage Temperature Tstg: -65 to +150 ℃.

Features

MC33262D features: (1)Overvoltage Comparator Eliminates Runaway Output Voltage; (2)Internal Startup Timer; (3)One Quadrant Multiplier; (4)Zero Current Detector; (5)Trimmed 2% Internal Bandgap Reference; (6)Totem Pole Output with High State Clamp; (7)Undervoltage Lockout with 6.0 V of Hysteresis; (8)Low Startup and Operating Current; (9)Supersedes Functionality of SG3561 and TDA4817; (10)Pb-Free Packages are Available.

Diagrams