component
LM27222MX
Public Unreviewedby Ray
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
markdownLM27222MX
Texas Instruments · Gate Drivers · SOIC-8
LM27222MX 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 | SW | power_in | High-side driver return. Connect to the common switch node between the high-side and low-side MOSFETs. Can swing from -2V to 30V (see abs max notes on negative duty cycle). |
| 2 | HG | output | High-side gate drive output. Connect to the high-side MOSFET gate. Internally pulled down to SW with a 10kΩ resistor to prevent spurious turn-on when the driver is off. Peak 3A source / 4.5A sink; 0.9Ω pull-up / 0.4Ω pull-down. |
| 3 | CB | power_in | Bootstrap capacitor input. Provides the boosted supply rail for the high-side driver referenced to SW. CB-to-GND absolute max 36V (operating 33V max); CB-to-SW abs max 7V. |
| 4 | IN | input | PWM input from the controller. Active high. Internally pulled down to GND with a 150kΩ resistor to prevent spurious turn-on when the controller is inactive. Thresholds ~65%/30% of VCC with ~0.7V hysteresis. |
| 5 | LEN | input | Low-side gate enable. Active high; enables synchronous operation of the low-side driver (supports synchronous, non-synchronous, and diode-emulation modes). Internally pulled down to GND with a 150kΩ resistor. Thresholds ~65%/30% of VCC. |
| 6 | VCC | power_in | Bias supply input. Connect to a +5V rail (operating range 4V to 6.85V; abs max 7V). Quiescent current typ 5µA with IN and LEN low. |
| 7 | LG | output | Low-side gate drive output. Connect to the low-side MOSFET gate. Internally pulled down to GND with a 10kΩ resistor to prevent spurious turn-on when the driver is off. Peak 3.2A source / 4.5A sink; 0.9Ω pull-up / 0.4Ω pull-down. |
| 8 | GND | power_in | Device ground. Return for VCC bias and the low-side driver. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Motor Driver ICs |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM27222MXMLM27222MXLM27222MXSDLM27222MXSDX
CAD (KiCad official)
- Symbol:
LM27222MX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (None pp, sha256
6dae1079f3288309, 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).