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Contents

README

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NCP161ASN330T1G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

NCP161ASN330T1G from onsemi, in a SOT-23-5. 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 IN power_in Input voltage supply pin. Operating range 1.9 V to 5.5 V; absolute max -0.3 V to 6 V. Bypass to GND with a 1 µF ceramic capacitor placed close to the pin.
2 GND power_in Common ground connection for the regulator and reference circuitry.
3 EN input Chip enable input. VEN < 0.4 V disables the regulator (shutdown current 0.01 µA typ.); VEN > 1.2 V enables the LDO. EN pull-down current 0.2 µA typ. at VEN = 4.8 V. Absolute max -0.3 V to 6 V.
4 NC unconnected No connect. Not internally bonded on the SOT23-5 package; leave floating or tie to GND.
5 OUT power_out Regulated output voltage (3.3 V fixed for the '330' option; ±2% accuracy). Requires a 1 µF ceramic output capacitor for stability. Output current up to 450 mA; current limit 450-700 mA typ.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • NCP161ASN330T1G

CAD (KiCad official)

  • Symbol: NCP161ASN330T1G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ncp161asn330t1g-etched.step / ncp161asn330t1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncp161asn330t1g.step / ncp161asn330t1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (22 pp, sha256 87f4bf1f8c4d9f5a, retrieved 2026-08-17, tier: manufacturer)
  • 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