NCP1129BP100G The ON Semiconductor NCP1129BP100G is an offline switch IC designed for flyback topologies. It integrates a 650V MOSFET and operates at 100kHz.
Mfr Part #:

NCP1129BP100G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor NCP1129BP100G is an offline switch IC designed for flyback topologies. It integrates a 650V MOSFET and operates at 100kHz.
✓ Total Stock: 16,400 pcs
$ Price Range: $0.75

NCP1129BP100G Available from 1 distributor

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NCP1129BP100G Specifications Quick View

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

NCP1129BP100G Description

Short technical summary and product information.

The ON Semiconductor NCP1129BP100G is an integrated high-voltage switcher IC designed for offline power supplies, specifically for flyback applications. It features a built-in 650V, 5.5A MOSFET with a typical RDS(on) of 2.1 Ohms.

 

This device operates at a fixed frequency of 100kHz and supports an input voltage range of 8.8V to 35V. It offers a power capability of up to 43W and a duty cycle of 80%. The IC includes comprehensive fault protection, covering over load, over temperature, over voltage, and short circuit conditions.

 

Packaged in an 8-DIP (0.300", 7.62mm) with 7 leads, the NCP1129BP100G is designed for through-hole mounting. Its operating temperature range is -40°C to 150°C (TJ). The topology is Flyback, and the output is isolated.

NCP1129BP100G Quick Information

Product Type: AC DC Converters, Offline Switches
Canonical Name: NCP1129BP100G High Voltage Switcher for Offline Power Supplies
Subcategory: AC DC Converters

NCP1129BP100G Compliance

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

NCP1129BP100G Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

NCP1129BP100G Features

  • Integrated 650V, 5.5A MOSFET.
  • 100kHz switching frequency.
  • Up to 43W power output.
  • Wide 8.8V to 35V input voltage.
  • Through-hole 7-PDIP package.

NCP1129BP100G Applications

  • Suitable for offline flyback power supplies
  • Works in 100 kHz fixed-frequency converters
  • Handles up to 5.5 A switching applications
  • Designed for isolated AC-DC converter designs

NCP1129BP100G FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the NCP1129BP100G?

The operating voltage range is 8.8V to 35V.

What package options are available for the NCP1129BP100G?

The NCP1129BP100G is available in a 7-PDIP package, which is an 8-DIP (0.300", 7.62mm) with 7 leads, through-hole mounting.

What is the operating temperature range?

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

What is the switching frequency?

The typical switching frequency is 100 kHz.

What fault protections does it include?

It includes overload, over-temperature, over-voltage, and short circuit protection.

What topology does it use?

It uses flyback topology with isolated output.

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