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LM5105SD

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Texas Instruments Gate Drive ICs, WSON-10-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM5105SD

Texas Instruments · Gate Drive ICs · WSON-10-EP(4x4)

LM5105SD from Texas Instruments, in a WSON-10-EP(4x4). 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 VDD power_in Positive gate drive supply; decouple VDD to VSS with a low ESR/ESL capacitor placed as close to the IC as possible.
2 HB power_in High-side gate driver bootstrap rail; the positive terminal of the bootstrap capacitor connects here and must be placed as close to the IC as possible.
3 HO output High-side gate driver output; connect to the gate of the high-side N-MOS through a short, low-inductance path.
4 HS power_in High-side MOSFET source connection; connect to the negative terminal of the bootstrap capacitor and to the source of the high-side N-MOS.
5 NC unconnected Not connected.
6 RDT input Dead-time programming pin; a resistor from RDT to VSS programs the turn-on delay of both high- and low-side MOSFETs and must be placed close to the IC.
7 EN input Logic input for driver enable/disable with TTL-compatible threshold and hysteresis; LO and HO are held low when EN is low.
8 IN input Logic input for the gate driver with TTL-compatible threshold and hysteresis; the high-side MOSFET turns on and the low-side MOSFET turns off when IN is high.
9 VSS power_in Ground return; all signals are referenced to this ground.
10 LO output Low-side gate driver output; connect to the gate of the low-side N-MOS through a short, low-inductance path.
11 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package WSON-10-EP(4x4)
Category Power Supply Chip
Pins 11

CAD (KiCad official)

  • Symbol: LM5105SD
  • Footprint: Package_SON:WSON-10-1EP_4x4mm_P0.8mm_EP2.6x3mm
  • 3D model: WSON-10-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: lm5105sd-etched.step / lm5105sd-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm5105sd.step / lm5105sd.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (26 pp, sha256 b0342a7c85bfeefb, retrieved 2026-10-10, tier: lcsc)
  • 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