FOD2741A

Overview

The FOD2741A is a precision optocoupler integrating an error amplifier, reference voltage source, and phototransistor output in a single package. It features a 2.5V internal reference and supports a current transfer ratio ranging from 100% to 200%. The device provides 5,000 Vrms isolation between input and output channels. It operates within a temperature range of -40°C to +85°C and utilizes an 8-DIP through-hole package.

Feature Summary

• Integrates error amplifier, reference voltage, and optocoupler functions
• Provides high-voltage electrical isolation for safety compliance
• Delivers stable reference voltage for feedback loop control

Applications

• Isolated AC to DC power supplies
• DC to DC converters
• Flyback converter primary-side regulation

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and check for obsolescence notices or production change notifications prior to finalizing procurement plans.

Selection Notes

Select this component when primary-side regulation is required in isolated power architectures. The integrated reference simplifies circuit design by eliminating external voltage references. Ensure the isolation voltage rating meets the system's safety requirements.

Part Context

This part belongs to the FOD2741 series, which includes variants with different packages such as surface-mount options. The series is designed specifically for applications requiring precise error amplification combined with galvanic isolation in compact form factors.

Replacement Considerations

Cross-reference with FOD2741B or FOD2741C for similar functional characteristics. Verify pinout compatibility and thermal performance before substituting.