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NCL30125B2DR2G The ON Semiconductor NCL30125B2DR2G is a fixed-frequency, current-mode controller designed for two-switch forward converters. It operates with a supply voltage up to 35V and features adjustable switching frequencies up to 300 kHz.
Mfr Part #:

NCL30125B2DR2G

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCL30125B2DR2G is a fixed-frequency, current-mode controller designed for two-switch forward converters. It operates with a supply voltage up to 35V and features adjustable switching frequencies up to 300 kHz.
✓ Total Stock: 8,623 pcs
$ Price Range: $0.32

NCL30125B2DR2G Available from 2 distributors

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✓ Non-Authorised
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Flip Electronics ✓
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7,623 pcs
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7623 pcs On Request 1 On Request On Request On Request On Request On Request
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1,000 pcs
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1000 pcs On Request 1 On Request On Request On Request On Request On Request
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NCL30125B2DR2G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Controller Type
Current
Input Type
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Ratio
Supplier Device Package
Supply Voltage
Switch Type
Tape & Reel
Voltage
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NCL30125B2DR2G Description

Short technical summary and product information.

The NCL30125B2DR2G from ON Semiconductor is a fixed-frequency, current-mode controller with Dynamic Self-Supply (DSS) functionality. This feature simplifies auxiliary supply design by activating an internal startup current source during start-up, transients, and standby conditions.

 

This controller supports adjustable switching frequencies up to 300 kHz and operates in peak current mode control. It includes features like skip mode for light load efficiency, brown-out detection, and internal slope compensation. The device is designed for two-switch forward converter applications and DC-to-DC converters.

 

Packaged in a 16-SOIC surface-mount package, the NCL30125B2DR2G is suitable for various power supply applications, including those for PC silver boxes and game adapters. It offers a supply range up to 35V and includes integrated high-side drivers with specific peak source/sink drive capabilities.

 

Key features include brown-out detection, adjustable soft-start duration, frequency jittering, and timer-based short-circuit protection with auto-recovery or latched operation. It also has internal thermal shutdown for protection.

NCL30125B2DR2G Quick Information

Product Type: Switching Controller
Canonical Name: NCL30125 Current-Mode Controller
Subcategory: Switching Controllers

NCL30125B2DR2G Compliance

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

NCL30125B2DR2G Estimated Pricing

Qty Low High
1+ $0.32 $0.32

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

NCL30125B2DR2G Features

  • Fixed-frequency current-mode controller.
  • Adjustable switching frequency up to 300 kHz.
  • 35V Vcc operation with DSS.
  • Integrated high-side driver.
  • 16-SOIC surface mount package.

NCL30125B2DR2G Applications

  • Two-switch forward converters.
  • DC-to-DC converters.
  • Power supplies for PC.
  • Power supplies for game adapters.

NCL30125B2DR2G FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum supply voltage for the NCL30125B2DR2G?

The maximum supply voltage is 35 V.

What is the switching frequency of the NCL30125B2DR2G?

The maximum switching frequency is 300 kHz.

What is the operating temperature range for the NCL30125B2DR2G?

The maximum junction temperature is 150 °C.

What package does the NCL30125B2DR2G come in?

The NCL30125B2DR2G is available in a 16-SOIC surface mount package.

Does the NCL30125B2DR2G have short-circuit protection?

Yes, it includes a 15 ms timer-based short-circuit protection.

What is the drive capability of the NCL30125B2DR2G?

The peak source drive is 0.9 A and the peak sink drive is 1.2 A.

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