NCP1365ACBAXDR2G

NCP1365ACBAXDR2G is ON Semiconductor’s high‑voltage, off‑line flyback controller used in compact AC–DC adapters and power supplies. It is a primary‑side PWM controller that integrates the startup/high‑voltage current source, overcurrent protection, undervoltage lockout, and thermal shutdown. The device uses fixed‑frequency current‑mode control to drive a flyback converter and supports conventional optocoupler feedback (or primary‑side regulation in suitable designs). Packaging is a small 8‑pin device in a DR2G tape‑and‑reel variant, suitable for automated assembly. Typical applications include wall adapters, chargers, and other low‑to‑medium power offline supplies that require efficient operation and reliable protection features.

Here are typical features of the NCP1365ACBAXDR2G (ON Semiconductor):
- Off-line flyback controller for wall adapters and chargers
- Integrated high-voltage startup cell
- Current-mode PWM with valley switching for low EMI
- Fixed-frequency operation with burst/skip modes for low standby power
- Primary-side regulation (PSR) feedback options (optocoupler-free in suitable designs)
- Protections: overcurrent/short-circuit, overvoltage, and thermal shutdown
- Auto-restart/hiccup protection on fault conditions
- Enable/standby input for idle-state control
- Internal soft-start and slope compensation
- RoHS-compliant packaging (variant DR2G)
Note: For exact electrical specs (voltage ranges, frequency, current limits, and protection behaviors), please consult the official datasheet for the NCP1365ACBAXDR2G.

- Pin count: 8 pins (SO-8/DIP-8 package)
- Function: Off-line switch-mode power supply controller with an integrated high-voltage MOSFET for flyback converters (uses PWM/current-mode regulation with startup and protection features for AC-DC adapters).

- Manufacturer: ON Semiconductor (ON Semi).
- What kind of company: American multinational semiconductor company that designs and manufactures integrated circuits and discrete semiconductors for automotive, industrial, and consumer electronics; originated as Motorola's semiconductor division and became independent in 1999.

- Offline switch-mode power supplies using flyback topology with primary-side regulation
- AC-DC adapters and USB wall chargers
- Embedded and stand-alone power supplies for consumer electronics (set-top boxes, routers, streaming devices)
- LED lighting driver power supplies (constant current/voltage where applicable)
- Standby/auxiliary supplies for telecom and consumer electronics equipment
Note: NCP1365ACBAXDR2G is intended for PSR flyback SMPS applications, enabling no opto-coupler feedback in many designs.

8-pin SOIC (SOP-8) package, RoHS lead-free variant.