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.

LM27222MXM
LM27222MX
LM27222MXSD
LM27222MXSDX

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).

Datasheet PDF