NCP1076ABP100G

NCP1076ABP100G is ON Semiconductor’s off-line, fixed-frequency, current‑mode PWM controller with an integrated high‑voltage startup switch (650 V) for flyback power supplies. It targets low‑power AC–DC adapters and LED drivers, enabling simple, cost‑efficient designs with minimal external components.
Key points:
- Integrated high‑voltage startup/FET, suitable for direct rectified mains
- Fixed switching frequency, current‑mode control
- Protection: undervoltage lockout, overcurrent/short‑circuit protection (hiccup), thermal shutdown
- Low standby power; designed for flyback topologies with external transformer and feedback (optocoupler or primary‑side regulation, depending on design)
- Package: ABP, an 8‑pin device
Typical use: small to mid‑range SMPS and lighting drivers, where a compact, efficient solution is required. For exact electrical specs, recommended external components, and design guidelines, consult the NCP1076ABP100G datasheet.

Here are the typical features of the NCP1076ABP100G (On Semiconductor) family, suitable for offline switcher applications:
- Integrated high-voltage switch: 700 V MOSFET (no external FET needed)
- Primary-side control: current-mode PWM for flyback/SMPS
- Fixed-frequency operation with efficiency-enhancing techniques (valley/soft switching concepts)
- Startup from the high-voltage rail; low standby/quiescent current
- Undervoltage lockout with hysteresis; enable input for manual control
- Cycle-by-cycle current limiting and short-circuit protection
- Thermal shutdown with auto-restart
- Robust protection and simple external components (typical for off-line controllers)
- RoHS-compliant, Pb-free package (ABP)
Note: exact electrical specs (voltage/current limits, switching frequency, hysteresis values) are in the datasheet. Please refer to the precise NCP1076ABP100G datasheet for exact numbers and recommended operating conditions.

- Pin count: 8 pins (8‑pin package).
- Function: High‑voltage primary‑side current‑mode PWM controller for off‑line switch‑mode power supplies (flyback). It regulates the primary switch via PWM, includes startup/UVLO and protection features; many variants drive an external MOSFET, though some versions include an integrated HV MOSFET.

- Manufacturer: ON Semiconductor (ON Semiconductor Corporation), commonly known as ON Semi.
- Company type: An American multinational semiconductor company that designs and manufactures energy-efficient power and signal management ICs, sensors, and related technologies for automotive, industrial, computing, and consumer markets.

NCP1076ABP100G is used in isolated off-line flyback power supplies. Common application areas include:
- Low-to-medium power AC-DC adapters and wall-wart/USB chargers (roughly 5–20+ W)
- Standby and auxiliary power supplies for consumer electronics
- General off-line SMPS for small home devices (set-top boxes, routers/modems, printers, audio/video gear)
In short: compact, cost-effective isolated power supplies for consumer electronics and peripherals.

NCP1076ABP100G is in an 8-pin SO-8 (plastic surface-mount) package (ABP variant). It is RoHS lead-free (G).