FAN6290QXMX

FAN6290QXMX is a high-voltage, current‑mode PWM controller in the FAN6290 family (Fairchild/Onsemi) used for offline switch‑mode power supplies and LED drivers. It provides the control electronics and gate drive for an external power MOSFET, enabling topologies such as flyback.
Key features (typical):
- High-voltage startup current source and high-voltage input operation
- Current‑mode control with slope compensation
- Adjustable switching frequency with jitter
- Protective functions: overcurrent/short‑circuit, overvoltage, undervoltage lockout, and thermal shutdown
- Soft‑start and enable/diagnostic options
- External MOSFET gate drive and feedback interfaces
Typical applications:
- Offline flyback converters
- LED driver supplies
- Small to medium power SMPS (several watts to several tens of watts)
Packaging note:
- QXMX denotes a specific package/temperature option (RoHS‑compliant variant of the device)
For exact pinout, electrical specifications, and recommended usage, refer to the official FAN6290QXMX datasheet from the manufacturer’s website.

FAN6290QXMX is in an 8-pin QFN package (3x3 mm) with an exposed pad.

- Pin count: 20 pins (QFN package as indicated by QMX)
- Function: Dual high-side/low-side MOSFET gate driver for switching regulators/motor drivers (two-channel gate driver used to drive MOSFETs in half-bridge configurations).

- Manufacturer: Fairchild Semiconductor (now part of ON Semiconductor).
- Company type: A semiconductor company that designs and manufactures integrated circuits and discrete components, with a focus on power management ICs, analog/mixed-signal devices, and related electronics for consumer, automotive, and industrial markets.

Applications: offline and AC‑DC power supplies (flyback/buck topologies), LED lighting driver ICs, battery charging and power-bank circuits, automotive power electronics (DC‑DC converters and auxiliary supplies), industrial and telecom power supplies, and general point‑of‑load power management in consumer electronics.