component
LM5109BMAX
Public Made by Adomby adom
Texas Instruments Gate Drivers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM5109BMAX
Texas Instruments · Gate Drivers · SOIC-8
LM5109BMAX from Texas Instruments, in a SOIC-8. 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 | VDD | power_in | Positive gate drive supply (8-14 V operating range), locally decoupled to VSS with low-ESR, low-ESL capacitor. |
| 2 | HI | input | High-side control input with TTL and CMOS-compatible thresholds; unused input must be tied to ground. |
| 3 | LI | input | Low-side control input with TTL and CMOS-compatible thresholds; unused input must be tied to ground. |
| 4 | VSS | power_in | Ground reference for all signals. |
| 5 | LO | output | Low-side gate driver output; connect to gate of low-side N-channel MOSFET. |
| 6 | HS | power_in | High-side source connection for bootstrap capacitor negative terminal and high-side N-MOSFET source; voltage range -5 to 90 V with respect to VSS. |
| 7 | HO | output | High-side gate driver output referenced to HS; connect to high-side N-MOSFET gate. |
| 8 | HB | power_in | High-side gate driver positive supply rail for bootstrap capacitor; maximum voltage 108 V with respect to VSS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Motor Driver ICs |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM5109BMAX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm5109bmax-etched.step/lm5109bmax-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm5109bmax.step/lm5109bmax.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
d5b9703a67312b17, retrieved 2026-09-21, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).