MC33232D

Overview

The MC33232D is a Power Factor Correction (PFC) controller from onsemi, operating in Critical Conduction Mode (CRM). It is designed for high-efficiency power supplies and features a supply voltage range of 12V to 25V. The device operates within an ambient temperature range of -20°C to 85°C and has a startup current of 50 µA. It is housed in an 8-SOIC surface-mount package with a width of 3.90mm. This component belongs to the SMARTMOS® series and is classified as obsolete.

Feature Summary

• Supports Critical Conduction Mode (CRM) operation for PFC applications
• Integrated SMARTMOS® technology for enhanced performance
• Operates on single or dual power supplies within specified voltage limits

Applications

• Power factor correction in switch-mode power supplies
• High-efficiency AC-DC converters
• Industrial power supply units

Procurement Notes

Verify obsolescence status before design-in. Confirm pinout compatibility with target PCB layout. Check RoHS compliance documentation. Ensure thermal management meets operating temperature requirements. Validate substitute availability if production continuity is required.

Selection Notes

Select based on CRM control requirements and SOIC package constraints. Consider input voltage range suitability for specific AC line conditions. Evaluate thermal performance within the -20°C to 85°C operational window. Assess integration with existing power stage components for optimal efficiency.

Part Context

Part of the onsemi SMARTMOS® family, designed for power management applications. The MC33232 series focuses on critical conduction mode control strategies. It serves as a specialized solution for improving power factor in electronic equipment requiring efficient energy conversion.

Replacement Considerations

L6562D by STMicroelectronics is listed as a direct replacement.