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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

L6229DTR

STMicroelectronics · Brushless DC (BLDC) Motor Driver · SO-24-300mil

L6229DTR from STMicroelectronics, in a SO-24-300mil. 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	H1	input	Single-ended Hall effect sensor input 1.
2	DIAG	output	Overcurrent detection and thermal protection pin; an internal open drain transistor pulls to GND when an overcurrent on one of the high-side MOSFETs is detected or during thermal protection.
3	SENSEA	power_in	Half-bridge 1 and half-bridge 2 source pin that must be connected together with pin SENSEB to power ground through a sensing power resistor.
4	RCOFF	passive	RC network pin; a parallel RC network connected between this pin and ground sets the current controller OFF-time.
5	OUT1	output	Power output 1.
6	GND	power_in	Ground terminal; on the SO24 package this pin is also used for heat dissipation toward the PCB.
7	GND	power_in	Ground terminal; on the SO24 package this pin is also used for heat dissipation toward the PCB.
8	TACHO	output	Frequency-to-voltage open drain output; every pulse from pin H1 is shaped as a fixed and adjustable length pulse.
9	RCPULSE	passive	RC network pin; a parallel RC network connected between this pin and ground sets the duration of the monostable pulse used for the frequency-to-voltage converter.
10	SENSEB	power_in	Half-bridge 3 source pin that must be connected together with pin SENSEA to power ground through a sensing power resistor, and at which the inverting input of the sense comparator is connected.
11	FWD/REV	input	Selects rotation direction: HIGH logic level sets forward operation and LOW sets reverse; if not used it must be connected to GND or +5 V.
12	EN	input	Chip enable; LOW logic level switches OFF all power MOSFETs, and if not used it must be connected to +5 V.
13	VREF	power_in	Current controller reference voltage; do not leave this pin open or connect it to GND.
14	BRAKE	input	Brake input; LOW logic level switches ON all high-side power MOSFETs to implement the brake function, and if not used it must be connected to +5 V.
15	VBOOT	power_in	Bootstrap voltage needed for driving the upper power MOSFETs.
16	OUT3	output	Power output 3.
17	VSB	power_in	Half-bridge 3 power supply voltage; it must be connected to the supply voltage together with pin VSA.
18	GND	power_in	Ground terminal; on the SO24 package this pin is also used for heat dissipation toward the PCB.
19	GND	power_in	Ground terminal; on the SO24 package this pin is also used for heat dissipation toward the PCB.
20	VSA	power_in	Half-bridge 1 and half-bridge 2 power supply voltage; it must be connected to the supply voltage together with pin VSB.
21	OUT2	output	Power output 2.
22	VCP	output	Charge pump oscillator output.
23	H2	input	Single-ended Hall effect sensor input 2.
24	H3	input	Single-ended Hall effect sensor input 3.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SO-24-300mil
Category	Motor Driver ICs
Pins	24

CAD (KiCad official)

Symbol: L6229DTR
Footprint: Package_SO:SO-24_5.3x15mm_P1.27mm
3D model: SO-24-300mil, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.75 mm nominal SOIC height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
3D model files: l6229dtr-etched.step / l6229dtr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l6229dtr.step / l6229dtr.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (33 pp, sha256 e17c22f1a99e0f9d, retrieved 2026-10-11, 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