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NCP1234BD65R2G The ON Semiconductor NCP1234BD65R2G is a fixed-frequency current-mode controller designed for flyback converters. It operates at 65kHz and is available in a Surface Mount 7-SOIC package.
Mfr Part #:

NCP1234BD65R2G

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCP1234BD65R2G is a fixed-frequency current-mode controller designed for flyback converters. It operates at 65kHz and is available in a Surface Mount 7-SOIC package.
✓ Total Stock: 67,724 pcs
$ Price Range: $0.75

NCP1234BD65R2G Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Flip Electronics ✓
Non-Authorised Inventory information
54,860 pcs
On Request
54860 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
12,500 pcs
On Request
12500 pcs On Request 1 On Request On Request 21+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
364 pcs
On Request
364 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

NCP1234BD65R2G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Fault Protection
Frequency
Halogen Free
Internal Switch(s)
Mounting Type
Operating Temperature
Output Isolation
Supplier Device Package
Supplier Package
Topology
Voltage
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NCP1234BD65R2G Description

Short technical summary and product information.

The ON Semiconductor NCP1234BD65R2G is a fixed-frequency current-mode controller specifically designed for flyback converter applications. This device operates at a nominal frequency of 65 kHz and supports an input voltage range of 9.5V to 28V.

 

Key features include built-in ramp compensation, frequency foldback for improved light-load efficiency, and timer-based overload protection. It also incorporates Dynamic Self-Supply (DSS) to simplify auxiliary supply design. The controller is suitable for applications requiring low standby power consumption and good efficiency under varying load conditions.

 

This component is housed in a 7-SOIC package and is designed for surface mount applications. It offers fault protection including current limiting, overload, and over-temperature detection. The device is also RoHS3 compliant and halogen-free.

 

Typical applications include AC-DC adapters for notebooks, LCDs, printers, offline battery chargers, and consumer electronic power supplies.

NCP1234BD65R2G Quick Information

Product Type: Offline Switch Controller
Canonical Name: NCP1234 Fixed Frequency Current Mode Controller for Flyback Converters
Subcategory: Offline Switches

NCP1234BD65R2G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

NCP1234BD65R2G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

NCP1234BD65R2G Features

  • Fixed-frequency current-mode operation.
  • 65 kHz oscillator frequency version.
  • Frequency foldback for light load efficiency.
  • Timer-based overload protection.
  • Surface mount 7-SOIC package.

NCP1234BD65R2G Applications

  • AC-DC adapters for notebooks.
  • Offline battery chargers.
  • Consumer electronic power supplies.
  • Flyback converter applications.

NCP1234BD65R2G FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the NCP1234BD65R2G?

The operating temperature range is -40°C to 150°C (TJ).

What is the operating frequency of the NCP1234BD65R2G?

This device operates at a nominal frequency of 65 kHz.

What is the input voltage range for this controller?

The controller operates with an input voltage range of 9.5V to 28V.

What type of package is the NCP1234BD65R2G in?

It is supplied in an 8-SOIC package with 7 leads, designed for surface mounting.

Does the NCP1234BD65R2G have fault protection features?

Yes, it includes current limiting, over load, and over temperature fault protection.

Is the NCP1234BD65R2G RoHS compliant?

Yes, the status is RoHS3 Compliant.

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