LT1509CN#PBF

Overview

The LT1509CN#PBF is a Power Factor Correction (PFC) controller manufactured by Analog Devices Inc. It operates in average current mode with a switching frequency of 100kHz. The device is housed in a 20-pin PDIP package and supports an analog supply voltage up to 27V. It is designed for through-hole mounting and functions within a temperature range of 0°C to 100°C.

Feature Summary

• Implements average current mode control for PFC applications
• Features a fixed 100kHz switching frequency
• Includes integrated power factor correction circuitry

Applications

• Power factor correction controllers
• Average current mode power supplies

Procurement Notes

Verify the specific suffix CN#PBF against official Analog Devices documentation to confirm the commercial temperature grade and lead-free packaging status. Ensure the 20-PDIP package matches the target PCB footprint requirements. Confirm that the 27V maximum supply rating aligns with the system design specifications before procurement.

Selection Notes

Select this component when average current mode control is required for PFC designs. The 100kHz frequency offers a balance between efficiency and component size. Verify that the 20-PDIP through-hole package fits the assembly constraints. Ensure the operating temperature range meets the environmental requirements of the final application.

Part Context

The LT1509 belongs to the LT1509 series of PFC controllers from Analog Devices. It is distinct from other series such as the LTC2609 DACs or LT1009 voltage references. The part serves as a dedicated solution for improving power factor in AC-DC conversion systems using average current mode techniques.

Replacement Considerations

Consult official Analog Devices documentation for verified pin-to-pin replacements. Do not assume compatibility with generic PFC controllers without verifying electrical parameters and pinout configurations.