LX1562IM

Overview

The LX1562IM is a second-generation power factor correction controller from Microsemi Corporation, designed for discontinuous conduction mode (DCM) operation. It integrates a fixed switching frequency of 1.7 MHz to minimize external component size and improve transient response. The device utilizes an 8-pin DIP package, suitable for through-hole mounting in various power supply architectures requiring efficient PFC solutions.

Feature Summary

• Implements second-generation discontinuous conduction mode control for optimized efficiency
• Integrates a high-frequency 1.7 MHz switching clock to reduce passive component volume
• Provides dedicated power factor correction regulation capabilities

Applications

• Discontinuous conduction mode power factor correction circuits
• Mid-to-low power AC-DC power supply designs
• General-purpose switched-mode power supplies requiring PFC compliance

Procurement Notes

Verify the specific manufacturer source, as Microsemi's analog mixed-signal assets were acquired by Microchip. Confirm the package type matches the required 8-DIP configuration and ensure the revision level aligns with current design requirements. Check for any obsolescence notices or lifecycle status updates from the authorized distributor before finalizing procurement plans.

Selection Notes

Select this component when a fixed-frequency DCM PFC solution is required without the need for variable frequency control. The 1.7 MHz internal oscillator simplifies electromagnetic interference filtering compared to lower-frequency alternatives. Ensure the application supports the thermal characteristics associated with the 8-DIP package for adequate heat dissipation during continuous operation.

Part Context

The LX1562 belongs to a family of power factor correction controllers developed by Microsemi, now part of Microchip Technology. This series targets applications demanding improved power quality and regulatory compliance. The IM suffix typically denotes the industrial temperature range and the specific 8-DIP packaging format used in legacy and robust power supply designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts and control loops if considering alternative PFC controllers from other manufacturers.