LT1249CS8#TRPBF

Overview

The LT1249CS8#TRPBF is a power factor controller designed for universal offline power systems. It operates in average current mode with a fixed switching frequency of 100 kHz, though some documentation indicates a 200 kHz option. The device requires minimal external components to implement active power factor correction. It functions within an input voltage range of 11.5 V to 25 V and has a minimum operating threshold of 15.5 V. The supply current is 1.5 mA, and it supports an operating temperature range from 0°C to 70°C.

Feature Summary

• Provides active power factor correction for universal offline power systems
• Operates in average current mode control
• Requires very few external parts for implementation

Applications

• Universal offline power supplies
• Active power factor correction circuits
• High-frequency PWM power systems

Procurement Notes

Verify the specific datasheet version for the exact switching frequency configuration, as sources indicate both 100 kHz and 200 kHz options. Confirm the package type matches your PCB design requirements. Check availability status as distribution channels may report limited stock or discontinuation. Ensure the input voltage range aligns with your system's power rail specifications before integration.

Selection Notes

Select this component when designing offline power converters requiring high power factor correction with minimal external circuitry. It is suitable for applications needing average current mode control. Verify that the 11.5 V to 25 V input range covers your operational needs. Consider the thermal performance within the 0°C to 70°C range if operating in constrained environments.

Part Context

This part belongs to the LT1249 series of power factor controllers manufactured by Analog Devices Inc. (formerly Linear Technology). It is packaged in an SOIC-8 format. The #TRPBF suffix indicates a tape and reel packaging option compliant with RoHS standards. It is distinct from other LT series devices like the LT1241 switch controller or LTC1049 precision amplifier.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official manufacturer cross-reference guides for potential alternatives.