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L6506D

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STMicroelectronics Stepper Motor Driver, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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L6506D

STMicroelectronics · Stepper Motor Driver · SOIC-20-300mil

L6506D 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 R/C passive RC network pin that sets the oscillator frequency f = 1/(0.69RC) for R > 10 kΩ, within the 5 to 70 kHz range.
2 OSC. bidirectional Oscillator output used to drive the sync pins of other devices when synchronizing several chips.
3 SYNC bidirectional Synchronization pin connected to the master oscillator output so the master sets the operating frequency in all chips.
4 POWER ENABLE input TTL-compatible enable input common to the four output AND gates (VIH min 2 V, VIL max 0.8 V).
5 IN 1 input TTL-compatible logic input for OUT 1 (VIH min 2 V, VIL max 0.8 V).
6 IN 2 input TTL-compatible logic input for OUT 2 (VIH min 2 V, VIL max 0.8 V).
7 IN 3 input TTL-compatible logic input for OUT 3 (VIH min 2 V, VIL max 0.8 V).
8 IN 4 input TTL-compatible logic input for OUT 4 (VIH min 2 V, VIL max 0.8 V).
9 GND power_in Ground pin.
10 N.C. unconnected Not connected internally.
11 N.C. unconnected Not connected internally.
12 VSENSE 1 input Comparator 1 sense input from the sense resistor, input voltage range -0.3 to 3 V.
13 OUT 4 output TTL-compatible drive output 4 with VOH min 2 V at 400 µA and source current of 2.75 mA at VCC = 4.75 V.
14 OUT 3 output TTL-compatible drive output 3 with VOH min 2 V at 400 µA and source current of 2.75 mA at VCC = 4.75 V.
15 OUT 2 output TTL-compatible drive output 2 with VOH min 2 V at 400 µA and source current of 2.75 mA at VCC = 4.75 V.
16 OUT 1 output TTL-compatible drive output 1 with VOH min 2 V at 400 µA and source current of 2.75 mA at VCC = 4.75 V.
17 VSENSE 2 input Comparator 2 sense input from the sense resistor, input voltage range -0.3 to 3 V.
18 REF 1 input Reference voltage input for comparator 1; peak current is Vref/Rsense.
19 REF 2 input Reference voltage input for comparator 2; peak current is Vref/Rsense.
20 VCC power_in Supply voltage, 4.5 V to 7 V operating, 10 V absolute maximum.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOIC-20-300mil
Category Motor Driver ICs
Pins 20

CAD (KiCad official)

  • Symbol: L6506D
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: l6506d-etched.step / l6506d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l6506d.step / l6506d.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (8 pp, sha256 12dcd81ed04c553c, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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