ACS723LLCTR-20AB-T

@@ -0,0 +1,56 @@+# ACS723LLCTR-20AB-T++**Allegro MicroSystems LLC** · Current Sensors · SOIC-8++ACS723LLCTR-20AB-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 copper current-sense conductor. Tied internally to pin 2. Sensed current I_P flows from IP+ (pins 1, 2) to IP− (pins 3, 4); rated for 65 A maximum continuous current at T_A = 25 °C. |+| 2 | IP+ | passive | Positive terminal of the internal primary copper current-sense conductor. Tied internally to pin 1. Both IP+ pins must be paralleled on the PCB to carry the primary sense current. |+| 3 | IP- | passive | Negative/return terminal of the internal primary copper current-sense conductor. Tied internally to pin 4. Together with pin 4 forms the low-side of the isolated primary path. |+| 4 | IP- | passive | Negative/return terminal of the internal primary copper current-sense conductor. Tied internally to pin 3. |+| 5 | GND | power_in | Signal-side ground reference for the device. All decoupling and VIOUT/BW_SEL loads are referenced to this pin. |+| 6 | BW_SEL | input | Bandwidth-select input. Leaving pin floating selects the 20 kHz low-noise output filter; tying to GND selects the 80 kHz high-bandwidth mode. |+| 7 | VIOUT | output | Analog output voltage proportional to the primary sensed current I_P. For the -20AB-T (bidirectional ±20 A) variant, sensitivity is 100 mV/A typ. at VCC = 5 V and the quiescent output is nominally VCC/2 at I_P = 0 A. Absolute maximum V_IOUT = 25 V; reverse output rating −0.1 V. |+| 8 | VCC | power_in | Device supply pin. Operating range 4.5 V to 5.5 V (single supply); absolute maximum 6 V, reverse supply −0.1 V. Bypass with a 0.1 µF capacitor (C_BYPASS) to GND close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Allegro MicroSystems LLC |+| Package | SOIC-8 |+| Category | Magnetic Sensors |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `ACS723LLCTR-05AB-T`+- `ACS723LLCTR-10AB-T`+- `ACS723LLCTR-20AB-T`+- `ACS723LLCTR-40AB-T`+- `ACS723LLCTR-50AB-T`+- `ACS723LLCTR-10AU-T`+- `ACS723LLCTR-20AU-T`+- `ACS723LLCTR-40AU-T`++## CAD (KiCad official)++- Symbol: `ACS723LLCTR-20AB-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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589849759474081792) (24 pp, sha256 `e2fc184189eefa51`, 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/acs723llctr-20ab-t-datasheet.pdf)

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