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NCP12400CBAAB0DR2G

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onsemi AC-DC Controllers And Regulators, SOIC-7. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ncp12400cbaab0dr2g
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NCP12400CBAAB0DR2G

onsemi · AC-DC Controllers And Regulators · SOIC-7

NCP12400CBAAB0DR2G from onsemi, in a SOIC-7. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 FAULT input Fault input: pull the pin high or low to stop the controller. An internal current source allows direct connection of an NTC for over-temperature detection. Device restarts in autorecovery mode or latches off depending on the option.
2 FB input Feedback + Shutdown pin. An optocoupler tied to ground controls output regulation. Pulling the FB pin to GND puts the part in low-consumption Off mode.
3 CS input Current Sense input for cycle-by-cycle primary peak-current mode control. Also provides overpower compensation adjustment and implements over-voltage protection.
4 GND power_in Controller ground reference for all internal circuitry and the DRV return path.
5 DRV output Gate drive output to the external primary-side power MOSFET. 300 mA source / 500 mA sink peak drive capability.
6 VCC power_in Controller supply pin, connected to the external auxiliary winding. Accepts up to 28 Vdc with internal over-voltage detection; also served by the internal Dynamic Self-Supply from the HV pin during start-up and light-load conditions.
8 HV power_in High-Voltage pin connected to the rectified AC line. Provides start-up current-source, Dynamic Self-Supply, brown-out detection, X2 capacitor discharge, and HV sensing for overpower protection. Must NOT be connected to a DC voltage.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-7
Category Power Management (PMIC)
Pins 7

Ordering variants

Same part, different packaging or reel option.

  • NCP12400BAHAB0DR2G
  • NCP12400BAHBB0DR2G
  • NCP12400BBBBB2DR2G
  • NCP12400BBHAA1DR2G
  • NCP12400CAHAB0DR2G
  • NCP12400CBAAB0DR2G
  • NCP12400CBBAB0DR2G
  • NCP12400CBHAA0DR2G
  • NCP12400EAHBB0DR2G
  • NCP12400BBBBA0DR2G
  • NCP12400BBHAB0DR2G
  • NCP12400BBEBA0DR2G
  • NCP12400BBAAA0DR2G

CAD (KiCad official)

  • Symbol: NCP12400CBAAB0DR2G
  • Footprint: Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-7 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (None pp, sha256 5b6a98e6b6537aad, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF