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ACS724LLCTR-05AB-T
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Allegro MicroSystems LLC Current Sensors, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# ACS724LLCTR-05AB-T++**Allegro MicroSystems LLC** · Current Sensors · SOIC-8++ACS724LLCTR-05AB-T from Allegro MicroSystems LLC, 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 | IP+ | passive | Positive terminal of the internal primary current-carrying conductor. Pins 1 and 2 are fused internally and must be tied together on the PCB. Primary conductor resistance is ~1.2 mΩ; galvanically isolated (2400 V RMS) from the signal side. |+| 2 | IP+ | passive | Positive terminal of the internal primary current-carrying conductor; fused internally with pin 1 and must be tied together on the PCB. Part of the isolated current path (up to ±5 A sensed range for the -05AB-T variant). |+| 3 | IP- | passive | Negative terminal of the internal primary current-carrying conductor. Pins 3 and 4 are fused internally and must be tied together on the PCB. Galvanically isolated from the signal side (pins 5-8). |+| 4 | IP- | passive | Negative terminal of the internal primary current-carrying conductor; fused internally with pin 3 and must be tied together on the PCB. Carries the sensed primary current (max continuous 55 A at 25 °C, ±5 A measurement range). |+| 5 | GND | power_in | Signal ground terminal. Reference for VCC, VIOUT, and FILTER pins; isolated from the primary conductor (IP+/IP-). |+| 6 | FILTER | passive | Terminal for an external capacitor (C_F) that forms an RC low-pass with the internal 1.8 kΩ resistor to set output bandwidth. Typical 1 nF gives 120 kHz BW; larger CF reduces noise at the cost of bandwidth. |+| 7 | VIOUT | output | Analog output signal proportional to the sensed primary current. Bidirectional output centered near VCC/2 with 400 mV/A typical sensitivity for the -05AB-T variant (±5 A range). Ratiometric to VCC; drive load ≥4.7 kΩ, ≤10 nF. |+| 8 | VCC | power_in | Device power supply terminal, 4.5-5.5 V (5 V nominal). Typical ICC = 10 mA. Bypass to GND with 0.1 µF ceramic capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Allegro MicroSystems LLC |+| Package | SOIC-8 |+| Category | Sensor |+| Pins | 8 |++## Ordering variants++- `ACS724LLCTR-05AB-T`++## CAD (KiCad official)++- Symbol: `ACS724LLCTR-05AB-T`+- 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:** [Allegro MicroSystems LLC datasheet](docs/acs724llctr-05ab-t-datasheet.pdf) (24 pp, sha256 `b9bcdc03fa944d78`, 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](docs/acs724llctr-05ab-t-datasheet.pdf)
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