MC34262P

Overview

The MC34262P 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 (CRM) with a supply voltage range of 12V to 28V. The device features a single-quadrant multiplier, zero-current detection, and a transconductance error amplifier. It supports through-hole installation in an 8-pin PDIP package and functions within a temperature range of 0°C to +85°C.

Feature Summary

• Single-quadrant multiplier ensures linear transmission for high power factor correction
• Zero-current detection enables critical conduction mode operation
• Integrated protection against overvoltage, undervoltage lockout, and cycle-by-cycle current limiting

Applications

• Active power factor correction in electronic ballasts
• Offline power converter pre-conversion stages
• General-purpose AC/DC power supply designs requiring CRM control

Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm that the specific part number matches the required PDIP-8 package and operating temperature specifications. Ensure compliance with relevant industry standards such as JESD78 and JEDEC reliability guidelines before integration into final products.

Selection Notes

Select this component for applications requiring critical conduction mode PFC control with through-hole mounting constraints. It is suitable for systems operating between 12V and 28V supply voltages. Consider its internal startup timer and fast-start circuitry for designs needing reduced startup delays and stable output regulation under varying load conditions.

Part Context

Part of the MC332 family, the MC34262P serves as a dedicated PFC controller. It complements other onsemi power management solutions by providing specialized control for AC-DC conversion stages. The device integrates essential analog blocks like the bandgap reference and current sense comparator to simplify external component requirements.

Replacement Considerations

The MC34262D variant is discontinued; L6561D from STMicroelectronics is listed as a similar alternative.