MC34262DR2G

Overview

The MC34262DR2G is a Power Factor Correction (PFC) controller manufactured by onsemi, designed for critical conduction mode (CRM) applications. It operates within a supply voltage range of 12V to 28V and supports switching frequencies up to 50 kHz. The device features an adjustable reset delay time and monitors one input channel. It is housed in an 8-SOIC surface-mount package with a threshold voltage range of 2.45 V to 2.75 V. The component functions as a mixed technology TVS device with two circuits and includes manual reset capabilities without a watchdog timer.

Feature Summary

• Supports critical conduction mode (CRM) PFC control topology
• Integrates overvoltage crowbar sensing functionality
• Features adjustable reset delay timing mechanisms
• Provides SCR trigger output types for protection

Applications

• Power factor correction systems requiring CRM operation
• Overvoltage protection circuits utilizing crowbar sensing
• Mixed technology transient voltage suppression designs

Procurement Notes

Verify the specific suffix DR2G against current manufacturer documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status as historical data indicates potential variations. Check for active obsolescence notices or product change notifications that may affect availability or pin compatibility. Ensure the source document explicitly lists this part number as available or discontinued before procurement planning.

Selection Notes

Select this component for applications requiring critical conduction mode PFC control with integrated overvoltage protection. The 8-SOIC package suits surface-mount assembly processes. Verify that the 12V to 28V supply range aligns with system power requirements. Consider the manual reset feature if automatic recovery is not required. Ensure the 50 kHz maximum switching frequency meets design constraints.

Part Context

This component belongs to the MC34262 series of PFC controllers from onsemi. It shares functional similarities with other devices in the family but is distinguished by its specific CRM operation and mixed technology TVS integration. The DR2G suffix typically denotes the SOIC-8 surface-mount package configuration.

Replacement Considerations

Public confirmed substitute part numbers include L6561D and L6561D013TR from STMicroelectronics. These alternatives are listed as similar replacements for the obsolete MC34262 series.