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L6226D

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STMicroelectronics Stepper Motor Driver, SOIC-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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L6226D

STMicroelectronics · Stepper Motor Driver · SOIC-24

L6226D from STMicroelectronics, in a SOIC-24. 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 IN1A input Bridge A logic input 1, TTL/CMOS and microcontroller compatible.
2 IN2A input Bridge A logic input 2, TTL/CMOS and microcontroller compatible.
3 SENSEA power_in Bridge A source pin, which must be connected to power ground directly or through a sensing power resistor.
4 OCDA output Bridge A overcurrent detection and thermal protection pin; an internal open-drain transistor pulls to GND on bridge A overcurrent or thermal protection, with a pull-down capability of 4 mA.
5 OUT1A power_out Bridge A output 1.
6 GND power_in Signal ground terminal; in SO packages these pins are also used for heat dissipation toward the PCB.
7 GND power_in Signal ground terminal; in SO packages these pins are also used for heat dissipation toward the PCB.
8 OUT1B power_out Bridge B output 1.
9 OCDB output Bridge B overcurrent detection and thermal protection pin; an internal open-drain transistor pulls to GND on bridge B overcurrent or thermal protection, with a pull-down capability of 4 mA.
10 SENSEB power_in Bridge B source pin, which must be connected to power ground directly or through a sensing power resistor.
11 IN1B input Bridge B logic input 1, TTL/CMOS and microcontroller compatible.
12 IN2B input Bridge B logic input 2, TTL/CMOS and microcontroller compatible.
13 PROGCLB passive Bridge B overcurrent level programming; a resistor to GND sets the bridge B current limit, direct connection to GND sets the maximum current, and the pin cannot be left non-connected.
14 ENB input Bridge B enable; a LOW logic level switches OFF all power MOSFETs of bridge B, and if unused it must be connected to +5 V.
15 VBOOT power_in Bootstrap voltage needed for driving the upper power MOSFETs of both bridge A and bridge B.
16 OUT2B power_out Bridge B output 2.
17 VSB power_in Bridge B power supply voltage; it must be connected to the supply voltage together with pin VSA (recommended operating range 8 to 52 V).
18 GND power_in Signal ground terminal; in SO packages these pins are also used for heat dissipation toward the PCB.
19 GND power_in Signal ground terminal; in SO packages these pins are also used for heat dissipation toward the PCB.
20 VSA power_in Bridge A power supply voltage; it must be connected to the supply voltage together with pin VSB (recommended operating range 8 to 52 V).
21 OUT2A power_out Bridge A output 2.
22 VCP output Charge pump oscillator output, a square wave at 600 kHz typical with 10 V amplitude used to build the external bootstrap charge pump.
23 ENA input Bridge A enable; a LOW logic level switches OFF all power MOSFETs of bridge A, and if unused it must be connected to +5 V.
24 PROGCLA passive Bridge A overcurrent level programming; a resistor to GND sets the bridge A current limit, direct connection to GND sets the maximum current, and the pin cannot be left non-connected.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOIC-24
Category Motor Driver ICs
Pins 24

CAD (KiCad official)

  • Symbol: L6226D
  • Footprint: Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm
  • 3D model: SOIC-24 (KiCad packages3D, STEP)
  • 3D model files: l6226d-etched.step / l6226d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l6226d.step / l6226d.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (29 pp, sha256 a9a368656949f30e, 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