Mfr Part #:

NCP1342BKDCDAD1R2G

The On Semiconductor NCP1342BKDCDAD1R2G is a highly integrated quasi-resonant flyback controller. It operates within a 9V to 28V range and supports frequencies from 25kHz to 500kHz.

✓ Total Stock: 9,825 pcs

$ Price Range: $0.75

NCP1342BKDCDAD1R2G Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Flip Electronics ✓ Non-Authorised Inventory information	9,825 pcs On Request	9825 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

NCP1342BKDCDAD1R2G Description

Short technical summary and product information.

The NCP1342BKDCDAD1R2G from On Semiconductor is a highly integrated quasi-resonant flyback controller designed for high-performance off-line power converters. It supports a wide operating voltage range of 9V to 28V and operates at frequencies between 25kHz and 500kHz.

This controller features integrated active X2 capacitor discharge for low no-load power consumption, proprietary valley-lockout circuitry for stable valley switching, and rapid frequency foldback for efficient light-load performance. Protective features include brownout detection, non-dissipative Over Power Protection (OPP), latched overvoltage protection, and NTC-ready overtemperature protection.

The NCP1342BKDCDAD1R2G is available in a 9-SOIC surface mount package. Its design considerations include frequency control and soft start capabilities, making it suitable for various power supply applications requiring high efficiency and robust protection.

Key features include internal brownout detection, Over Power Protection (OPP), latched overvoltage, and NTC-ready overtemperature protection. It also implements line removal detection for safe X2 capacitor discharge.

NCP1342BKDCDAD1R2G Quick Information

Product Type: AC DC Converters, Offline Switches

Series: NCP1342

Canonical Name: NCP1342 Quasi-Resonant Flyback Controller

Subcategory: Flyback Controller

NCP1342BKDCDAD1R2G Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

NCP1342BKDCDAD1R2G Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

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

NCP1342BKDCDAD1R2G Features

Highly integrated quasi-resonant flyback controller.
Wide 9V to 28V operating voltage range.
Frequency control from 25kHz to 500kHz.
Surface mount 9-SOIC package.
Includes overvoltage and overtemperature protection.

NCP1342BKDCDAD1R2G Applications

Suitable for high-performance power converters.
Enables low no-load power consumption.
Provides stable valley switching operation.
Optimized for light load efficiency.

NCP1342BKDCDAD1R2G FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range?

9V to 28V.

What is the switching frequency range?

25 kHz to 500 kHz.

What is the operating temperature range?

-40°C to 125°C (junction temperature).

What is the package type?

9-SOIC (10-SOP, 0.154" width, 9 leads) surface mount.

What fault protections does it include?

Current limiting, overload, overpower, overtemperature, overvoltage, and short circuit protection.

What control features does the controller have?

Frequency control and soft start.

What topology does it support?

Flyback topology with isolated output.

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On Semiconductor

The ON Semiconductor NCP1342DADBDGD1R2G is a highly integrated quasi-resonant flyback controller designed for high-performance offline power converters. It operates with a wide input voltage range and features high-frequency switching capabilities.

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