MC33232DR2G

Overview

The MC33232DR2G is a Power Factor Correction (PFC) controller manufactured by onsemi, belonging to the SMARTMOS series. It operates in Critical Conduction Mode (CRM) and is housed in an 8-SOIC surface-mount package with a width of 3.90mm. The device supports a supply voltage range of 12V to 25V and features a startup current of 50 µA. Designed for industrial applications, it functions within a temperature range of -20°C to +85°C. This component is currently obsolete and no longer in production.

Feature Summary

• Implements Critical Conduction Mode (CRM) control strategy for power factor correction
• Integrated SMARTMOS technology for enhanced performance
• Supports wide input supply voltage operation from 12V to 25V

Applications

• Power factor correction in AC-DC converters
• Industrial power supply systems
• General purpose PFC stages

Procurement Notes

This component is officially discontinued and no longer manufactured by onsemi. Procurement should focus on verified direct substitutes such as the L6562D from STMicroelectronics. Buyers must confirm availability through authorized distributors and verify that replacement parts meet original electrical specifications and pinout compatibility before integration into designs.

Selection Notes

Engineers selecting this part should note its obsolete status and prioritize compatible alternatives like the L6562D. Selection criteria must include CRM functionality, SOIC-8 packaging, and matching voltage ranges. Verify thermal performance within the specified operating temperature limits and ensure the substitute component aligns with existing circuit topology requirements without necessitating major redesigns.

Part Context

The MC33232 belongs to onsemi's SMARTMOS family of power management integrated circuits. It is designed specifically for critical conduction mode PFC applications. The DR2G suffix indicates tape-and-reel packaging for automated assembly processes. As a legacy product, it represents earlier generations of PFC controller technology developed for cost-effective power conversion solutions.

Replacement Considerations

The L6562D from STMicroelectronics is confirmed as a direct substitute. Other similar options include the L6561D and L6562AD. Ensure functional equivalence in CRM operation and verify pin compatibility during transition.