FAN6921AMRMY

Overview

The FAN6921AMRMY is an integrated Critical Mode Power Factor Correction (CRM PFC) and Quasi-Resonant Current Mode PWM controller manufactured by onsemi. It operates within a supply voltage range up to 25 V and supports switching frequencies up to 60 kHz. The device is housed in a 16-pin SOP package with dimensions of 10 x 4 x 1.5 mm. It functions reliably across an operating temperature range from -40 °C to +105 °C, featuring a maximum power dissipation of 800 mW and a supply current limit of 10 mA.

Feature Summary

• Integrates CRM PFC and QR current mode PWM control for high-efficiency power conversion
• Includes zero-power detection capability to minimize standby losses
• Supports surface-mount installation in compact SOP-16 packages

Applications

• Power factor correction stages in AC-DC adapters
• Quasi-resonant flyback converter designs
• General-purpose offline power supplies

Procurement Notes

Verify component authenticity through authorized channels due to the presence of obsolete status notifications. Confirm that the specific suffix matches the required pinout and thermal characteristics. Check for moisture sensitivity level compliance prior to assembly. Ensure the source documentation aligns with the official datasheet specifications for the FAN6921 series.

Selection Notes

Select this component for applications requiring combined PFC and PWM control in a single IC. Consider the 16-pin SOP package for space-constrained designs. Evaluate the operating temperature range against environmental requirements. Verify compatibility with the target switching frequency limits and input voltage constraints.

Part Context

This part belongs to the FAN6921 family of integrated controllers designed for efficient power management. It combines critical mode PFC with quasi-resonant PWM techniques to optimize performance. The series is intended for use in modern power supply architectures where size and efficiency are critical design parameters.

Replacement Considerations

Consult official discontinuance notifications for valid substitute part numbers. Verify functional equivalence regarding pinouts and electrical specifications before transitioning to alternative components.