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U3115S

Public Made by Adom

by adom

UNI SEMIC Gate Drivers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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U3115S

UNI SEMIC · Gate Drivers · SOP-8

U3115S from UNI SEMIC, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC power_in Low-side supply and chip power, recommended 9 V to 20 V referenced to COM, with an absolute maximum of -0.3 V to 25 V.
2 HIN input High-side logic input, active high, compatible with 3.3 V and 5 V logic, with VIH minimum 3.0 V and VIL maximum 0.8 V for VCC 10 V to 20 V.
3 LIN input Low-side logic input, described in the datasheet as active low for U3115S (the overbar is lost in the extracted text), with VIH minimum 3.0 V and VIL maximum 0.8 V for VCC 10 V to 20 V.
4 COM power_in Chip ground and the reference for all voltage parameters in the datasheet.
5 LO output Low-side gate driver output, with VOL maximum 100 mV at Io = 0 A, peak source 1.2 A and peak sink 1.5 A for pulses up to 10 µs.
6 VS power_in High-side floating ground, with recommended operating range -6 V to 300 V and absolute limits of VB-25 V to VB+0.3 V.
7 HO output High-side gate driver output referenced to VS, with VOH minimum VBIAS-100 mV at Io = 0 A and peak source 1.2 A and sink 1.5 A for pulses up to 10 µs.
8 VB power_in High-side floating supply, recommended VS+9 V to VS+20 V, with an absolute maximum of -0.3 V to 325 V.

Key specifications

Parameter Value
Manufacturer UNI SEMIC
Package SOP-8
Category Motor Driver ICs
Pins 8

CAD (KiCad official)

  • Symbol: U3115S
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: u3115s-etched.step / u3115s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); u3115s.step / u3115s.glb are the bare package body.

Provenance

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

  • Datasheet: UNI SEMIC datasheet (12 pp, sha256 4a71b865a9c624fc, retrieved 2026-10-19, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF