NCP1340B3D1R2G The ON Semiconductor NCP1340B3D1R2G is a high-voltage, quasi-resonant flyback controller. It features valley lock-out switching and is designed for high-performance off-line power converters.
Mfr Part #:

NCP1340B3D1R2G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCP1340B3D1R2G is a high-voltage, quasi-resonant flyback controller. It features valley lock-out switching and is designed for high-performance off-line power converters.
✓ Total Stock: 2,500 pcs
$ Price Range: $0.75

NCP1340B3D1R2G Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,500 pcs
2500 pcs On Request 1 On Request On Request On Request On Request On Request

NCP1340B3D1R2G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Fault Protection
Internal Switch(s)
Mounting Type
No Load Power Consumption
Operating Temperature
Output Current
Output Isolation
Supplier Device Package
Topology
Voltage

NCP1340B3D1R2G Description

Short technical summary and product information.

The NCP1340B3D1R2G from ON Semiconductor is a highly integrated quasi-resonant flyback controller designed for high-performance off-line power converters. It features a proprietary valley-lockout circuitry for stable valley switching, transitioning to frequency foldback mode and quiet-skip mode for efficiency at light loads. This controller supports a wide VCC range from 9 V to 28 V and operates within a temperature range of -40°C to 125°C.

 

Key protective features include internal brownout detection, non-dissipative Over Power Protection (OPP), latched overvoltage protection, NTC-ready overtemperature protection, and line removal detection. The device also includes an integrated high-voltage startup circuit and X2 capacitor discharge capability, enabling no-load power consumption below 30 mW. It is available in a 9-SOIC surface mount package.

 

This controller is suitable for applications requiring efficient and robust power conversion. Its features like frequency foldback and skip mode contribute to increased efficiency at light loads, while integrated protection mechanisms enhance converter ruggedness.

NCP1340B3D1R2G Quick Information

Product Type: AC/DC Converter
Series: NCP1340
Canonical Name: NCP1340B3D1R2G High-Voltage Quasi-Resonant Controller
Subcategory: Power Management ICs

NCP1340B3D1R2G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

NCP1340B3D1R2G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

NCP1340B3D1R2G Features

  • High-voltage quasi-resonant flyback controller.
  • Valley lock-out for stable switching.
  • Frequency foldback for light load efficiency.
  • Integrated protection features included.
  • Operates from 9V to 28V supply.

NCP1340B3D1R2G Applications

  • Used in AC-DC power adapters.
  • Ideal for offline flyback converters.
  • Suitable for auxiliary power supplies.
  • Applicable in industrial power systems.

NCP1340B3D1R2G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

9V to 28V.

What is the operating temperature range?

-40°C to 125°C.

What package is the NCP1340B3D1R2G available in?

9-SOIC (10-SOP with 9 leads).

What is the switching frequency?

Minimum 25kHz.

What fault protections are included?

Over load, over power, over temperature, over voltage, and short circuit.

What is the output current capability?

500mA to 800mA.

What is the no-load power consumption?

Below 30mW.

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