MotorolaMC 33262P

The Motorola MC33262P Active Power Factor Correction PFC Controller Critical-Conduction PDIP-8 is an active power-factor controller for preconverter stages in electronic ballasts and off-line power converters using critical-conduction zero-current operation.

Technical description

The MC33262 integrates a one-quadrant multiplier for near-unity power factor, zero-current detector, transconductance error amplifier, current-sense comparator and totem-pole MOSFET gate output. It provides overvoltage protection, undervoltage lockout, cycle-by-cycle current limiting and startup/restart circuitry. Typical startup threshold is 13V and the minimum operating threshold after startup is about 8V.

Indicative applications

Suitable for boost PFC preconverters, electronic ballasts, SMPS and off-line power supplies using active power-factor correction.

Compatibility note

The P version is PDIP-8. MC33262 is the industrial-grade version rated from -40°C to +105°C and should not be confused with MC34262, which has a different temperature grade.