MC33262DG

The MC33262DG, manufactured by ON Semiconductor, is an active power factor controller designed for preconverter stages in electronic ballast and off-line power converter applications. This integrated circuit operates within a supply voltage range of 12V to 28V and maintains functionality across an operating temperature range of -40°C to 105°C.

Key features include an internal startup timer, a one-quadrant multiplier for near-unity power factor, and a zero-current detector for critical conduction operation. It also incorporates a transconductance error amplifier, quickstart circuit, trimmed internal bandgap reference, and a current sensing comparator. The totem pole output is suitable for driving a power MOSFET.

Protective features are built-in, such as an overvoltage comparator to prevent runaway output voltage, input undervoltage lockout with hysteresis, cycle-by-cycle current limiting, and multiplier output clamp. The device is available in an 8-SOIC surface mount package.

This controller supersedes the functionality of the SG3561 and TDA4817, offering enhanced performance for power factor correction in various electronic systems.