MC33262P

Overview

The MC33262P is an active power factor controller from the MC332 series, designed for pre-converters in electronic ballasts and offline power supplies. It operates in critical conduction mode with a supply voltage range of 7V to 36V and supports through-hole PDIP packaging. Key electrical parameters include a start-up supply current of 0.25mA, maximum source current of 10μA, and maximum reverse current of 500,000μA. The device functions within a temperature range of -40°C to 105°C.

Feature Summary

• Features a single-quadrant multiplier that maintains linear transmission curves to reduce line current distortion.
• Includes a zero-current detector that triggers the next conduction period when inductor current reaches zero.
• Integrates a transconductance error amplifier with stable gain characteristics across temperature variations.

Applications

• Active power factor correction in electronic ballasts
• Pre-converter stages in offline power supplies

Procurement Notes

Verify the package type matches the design requirements, as the MC33262 family includes both surface-mount and through-hole variants. Confirm the specific suffix indicates the PDIP configuration. Check for RoHS compliance status and ensure the operating temperature range aligns with the application environment. Review datasheets for pinout compatibility if replacing existing components.

Selection Notes

Select this component for applications requiring critical conduction mode PFC control. Ensure the input voltage stays within the 7V to 36V range. Consider the thermal performance given the 105°C maximum rating. Verify that the through-hole mounting option fits the PCB layout constraints compared to surface-mount alternatives.

Part Context

This part belongs to the MC332 series of power factor controllers manufactured by onsemi. It shares core functionality with the MC34262 but differs in operating temperature specifications and packaging options. The series is engineered for high-efficiency power conversion with integrated protection features.

Replacement Considerations

MC34262PG is a related variant with similar functionality but different temperature ratings. Verify pinout compatibility before substitution. Other CRM controllers may require external component adjustments.