NCP167BFCT330T2G

The NCP167BFCT330T2G is an ON Semiconductor flyback-controller IC used in off-line AC–DC power supplies and LED drivers. It implements fixed‑frequency, current‑mode PWM control from a rectified mains input and provides startup via the high-voltage rail, with protections typical for offline controllers (UVLO, over‑current/short‑circuit, over‑voltage, and thermal/OTP). The “FCT” suffix denotes the package/reel style, while “330” and “T2G” relate to the specific lot/packaging options. Depending on variant, it may require an external MOSFET or include an integrated switch; always verify in the datasheet for HV rating, switching frequency, and exact protection features. Applications include low‑to‑mid‑power offline supplies and LED drivers where PSR and simple feedback schemes are advantageous. For precise specs and usage guidelines, consult the NCP167B data sheet and product brief.

Equivalents depend on the device function and specs. NCP167BFCT330T2G (ON Semiconductor) is an LED driver/buck regulator. To give reliable cross-references, please share the datasheet or key specs (input voltage range, output current, dimming). With that, I can provide direct equivalents from TI, Richtek, ST, Analog Devices, etc., with exact part numbers.

NCP167BFCT330T2G features (fixed 3.3 V buck regulator with integrated switch):
- Fixed 3.3 V output (no external resistor network required)
- Integrated N‑channel power MOSFET for buck conversion
- Current‑mode PWM control for fast transient response
- Enable input to shutdown device
- Undervoltage lockout and thermal/shutdown protection
- Cycle‑by‑cycle overcurrent/short‑circuit protection
- Soft‑start to limit inrush and output overshoot
- Small 8‑pin FCT package; RoHS-compliant
Note: exact electrical specs (input range, efficiency, quiescent current, etc.) are in the datasheet.

- Pin count: 8 pins (SO-8/TSSOP-8 package, as indicated by the FCT330T2G suffix).
- Function: ON Semiconductor NCP167B is an off-line flyback controller with an integrated high-voltage MOSFET. It drives the primary of a transformer in isolated AC-DC power supplies and LED drivers, providing switching control (current‑mode), regulation, and protection features (e.g., overcurrent/OVP/UVLO).

- Manufacturer: ON Semiconductor (ON Semiconductor Corporation)
- What kind of company: A global, American multinational semiconductor company that designs, manufactures, and sells energy‑efficient ICs and power management devices (auto, industrial, and consumer electronics). Headquarters in Phoenix, Arizona; Fortune 500 member.

NCP167BFCT330T2G is a fixed 3.3 V buck regulator controller. Typical application areas:
- Fixed 3.3 V buck regulators for low-/mid-power switch-mode power supplies
- Standby/auxiliary 3.3 V rails in consumer displays (TVs, monitors), set-top boxes, and printers
- Power rails for networking/telecom equipment and industrial controllers
- Peripherals and consumer electronics (gaming consoles, audio/video devices) needing a 3.3 V supply
- Embedded and battery-powered systems requiring a compact 3.3 V regulator solution

SOT-23-5 (SC-70-5 style) package, RoHS compliant (G).