component
L6225DTR
Public Made by Adomby adom
STMicroelectronics Stepper Motor Driver, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, 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
markdownL6225DTR
STMicroelectronics · Stepper Motor Driver · SOIC-20-300mil
L6225DTR from STMicroelectronics, in a SOIC-20-300mil. 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 | IN1A | input | Bridge A Logic Input 1 with TTL/CMOS compatibility; voltage range -0.3 to +7V, Vth(ON) = 1.8V typical, Vth(OFF) = 1.3V typical. |
| 2 | IN2A | input | Bridge A Logic Input 2 with TTL/CMOS compatibility; voltage range -0.3 to +7V, Vth(ON) = 1.8V typical, Vth(OFF) = 1.3V typical. |
| 3 | SENSEA | power_in | Bridge A current sense source pin; must connect to power ground directly or through a sensing resistor; voltage range -1 to +1V DC or -6 to +6V pulsed. |
| 4 | OUT1A | power_out | Bridge A Output 1; power output with integrated DMOS transistor (RDS(ON) = 0.73Ω typical @ 25°C) and freewheeling diode; maximum peak current 2.8A. |
| 5 | GND | power_in | Signal Ground terminal; provides heat dissipation path toward PCB in SO and PowerDIP packages; internally connected to pins 1, 10, 11, and 20. |
| 6 | GND | power_in | Signal Ground terminal; provides heat dissipation path toward PCB in SO and PowerDIP packages; internally connected to pins 1, 10, 11, and 20. |
| 7 | OUT1B | power_out | Bridge B Output 1; power output with integrated DMOS transistor (RDS(ON) = 0.73Ω typical @ 25°C) and freewheeling diode; maximum peak current 2.8A. |
| 8 | SENSEB | power_in | Bridge B current sense source pin; must connect to power ground directly or through a sensing resistor; voltage range -1 to +1V DC or -6 to +6V pulsed. |
| 9 | IN1B | input | Bridge B Logic Input 1 with TTL/CMOS compatibility; voltage range -0.3 to +7V, Vth(ON) = 1.8V typical, Vth(OFF) = 1.3V typical. |
| 10 | IN2B | input | Bridge B Logic Input 2 with TTL/CMOS compatibility; voltage range -0.3 to +7V, Vth(ON) = 1.8V typical, Vth(OFF) = 1.3V typical. |
| 11 | ENB | input | Bridge B Enable input; LOW logic level disables all Bridge B MOSFETs; connected to open-drain overcurrent and thermal protection transistor collector with 4mA pull-down; connect to +5V through resistor if unused. |
| 12 | VBOOT | power_in | Bootstrap voltage supply for driving upper PowerMOSFETs of both bridges; peak voltage VS + 10V; 600kHz typical oscillator output with 10V amplitude. |
| 13 | OUT2B | power_out | Bridge B Output 2; power output with integrated DMOS transistor (RDS(ON) = 0.73Ω typical @ 25°C) and freewheeling diode; maximum peak current 2.8A. |
| 14 | VSB | power_in | Bridge B power supply voltage; must connect to supply voltage together with VSA pin; operating range 8 to 52V; peak pulsed current 3.55A, RMS current 1.4A. |
| 15 | GND | power_in | Signal Ground terminal; provides heat dissipation path toward PCB in SO and PowerDIP packages; internally connected to pins 1, 10, 11, and 20. |
| 16 | GND | power_in | Signal Ground terminal; provides heat dissipation path toward PCB in SO and PowerDIP packages; internally connected to pins 1, 10, 11, and 20. |
| 17 | VSA | power_in | Bridge A power supply voltage; must connect to supply voltage together with VSB pin; operating range 8 to 52V; peak pulsed current 3.55A, RMS current 1.4A. |
| 18 | OUT2A | power_out | Bridge A Output 2; power output with integrated DMOS transistor (RDS(ON) = 0.73Ω typical @ 25°C) and freewheeling diode; maximum peak current 2.8A. |
| 19 | VCP | output | Charge Pump Oscillator Output; provides 600kHz typical square wave with 10V amplitude for external bootstrap charge pump circuit. |
| 20 | ENA | input | Bridge A Enable input; LOW logic level disables all Bridge A MOSFETs; connected to open-drain overcurrent and thermal protection transistor collector with 4mA pull-down; connect to +5V through resistor if unused. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-20-300mil |
| Category | Motor Driver ICs |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
L6225DTR - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
l6225dtr-etched.step/l6225dtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l6225dtr.step/l6225dtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (20 pp, sha256
592efbdb82d149b7, retrieved 2026-09-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).